Next 60 clues added

368. Original, but make is a nod to a non-DC movie character
369. Earlier show
370. Original
371. Original
372. Original
373. Comics (this version's surname missing a syllable)
374. Original
376. Original
377. Original
378. Original
379. Original
380. Original
381. Real person
382. Original
383. Comics
384. Original
385. Real person
386. Slightly earlier (same episode) character this continuity
387. Comics
388. Comics, though comics version's real name is unknown
389. Original
390. Original
391. Comics
392. Mostly original, though name a nod to a real person
393. Comics
394. Mostly original. Surname possible reference to comics character and definitely to real person
396. Original
397. Original
398. Original
399. Original
400. Original; possible but unconfirmed connection to earlier character
401. Original
402. Original
403. Original
404. Original
406. Original
407. Original
408. Comics (indirectly)
409. Original
410. Real person
413. Real person
414. Comics (has different code name with same meaning)
415. Original
416. Slightly earlier (same episode) character this continuity
417. Real person
418. Original
419. Original
420. Comics
421. Original, but related to comics based character
422. Original
423. Earlier character this continuity
424. Comics
425. Original
427. Real person
428. Slightly earlier (same episode) character this continuity
429. Comics
430. Comics (comics version has different codename)
431. Real person
432. Comics (comics version's surname has one fewer syllable)
433. Original
434. Comics (though this version's real name unrevealed)
435. Real person
436. Comics (individual based on a race)
437. Original
438. Real person
439. Original
440. Original
441. Comics
442. Original
443. Original
444. Original
445. Original, though name evokes movie characters
446. Comics (slightly different name)
447. Original
448. Original, though surname may be nod to real person
449. Original
450. Comics (slightly different codename)
451. Possibly comics
452. Comics (comics version has different real surname)
453. Comics
454. Earlier character this continuity. Original
455. Comics
456. Original
457. Original
458. Real person
459. Original
460. Original
461. Original
462. Original
463. Apparently original, though related to real person
464. Earlier character this continuity. Original
465. Real person
466. Comics
467. Original
468. Original, though name evokes a novel character
470. Comics
471. Comics (indirectly)
472. Folklore (possibly real person but if so heavily embellished)
473. Original
474. Original
475. Comics
477. Comics (no real name in comics)
478. Comics indirectly
479. Original
480. Original
481. Original
482. Original
484. Original
485. Comics
486. Original
487. Original
488. Comics
489. Original, though surname may be nod to real person
490. Original
491. Original
492. Original
493. Original
494. Original
495. Original
496. Earlier character this continuity
497. Original
498. Original
499. Earlier show (indirectly)
500. Original
502. Comics
503. Comics (different first name)
504. Real person or comics depending on how you look at it
505. Original
506. Comics
507. Comics going by character in general, earlier show going by specific name
508. Real person
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name)
510. Comics
511. Comics
512. Original
513. Original
514. Comics
516. Original
518. Original
519. Original
520. Original
521. Original
522. Original
523. Original
524. Original
525. Comics
527. Real person
528. Original
529. Original
530. Comics
531. Original, but possible nod to real person
532. Comics
534. Original
535. Original
536. Comics (indirectly)
537. Earlier character this continuity
538. Possibly comics, with slightly different spelling
539. Comics
540. Original
541. Original
542. Original
543. Original
544. Comics (indirectly)
545. Original
546. Original
547. Original
548. Original
549. Comics (comics version has no first name)
550. Original
551. Comics

Remaining source clues added.

368. Original, but make is a nod to a non-DC movie character
369. Earlier show
370. Original
371. Original
372. Original
373. Comics (this version's surname missing a syllable)
374. Original
376. Original
377. Original
378. Original
379. Original
380. Original
381. Real person
382. Original
383. Comics
384. Original
385. Real person
386. Slightly earlier (same episode) character this continuity
387. Comics
388. Comics, though comics version's real name is unknown
389. Original
390. Original
391. Comics
392. Mostly original, though name a nod to a real person
393. Comics
394. Mostly original. Surname possible reference to comics character and definitely to real person
396. Original
397. Original
398. Original
399. Original
400. Original; possible but unconfirmed connection to earlier character
401. Original
402. Original
403. Original
404. Original
406. Original
407. Original
408. Comics (indirectly)
409. Original
410. Real person
413. Real person
414. Comics (has different code name with same meaning)
415. Original
416. Slightly earlier (same episode) character this continuity
417. Real person
418. Original
419. Original
420. Comics
421. Original, but related to comics based character
422. Original
423. Earlier character this continuity
424. Comics
425. Original
427. Real person
428. Slightly earlier (same episode) character this continuity
429. Comics
430. Comics (comics version has different codename)
431. Real person
432. Comics (comics version's surname has one fewer syllable)
433. Original
434. Comics (though this version's real name unrevealed)
435. Real person
436. Comics (individual based on a race)
437. Original
438. Real person
439. Original
440. Original
441. Comics
442. Original
443. Original
444. Original
445. Original, though name evokes movie characters
446. Comics (slightly different name)
447. Original
448. Original, though surname may be nod to real person
449. Original
450. Comics (slightly different codename)
451. Possibly comics
452. Comics (comics version has different real surname)
453. Comics
454. Earlier character this continuity. Original
455. Comics
456. Original
457. Original
458. Real person
459. Original
460. Original
461. Original
462. Original
463. Apparently original, though related to real person
464. Earlier character this continuity. Original
465. Real person
466. Comics
467. Original
468. Original, though name evokes a novel character
470. Comics
471. Comics (indirectly)
472. Folklore (possibly real person but if so heavily embellished)
473. Original
474. Original
475. Comics
477. Comics (no real name in comics)
478. Comics indirectly
479. Original
480. Original
481. Original
482. Original
484. Original
485. Comics
486. Original
487. Original
488. Comics
489. Original, though surname may be nod to real person
490. Original
491. Original
492. Original
493. Original
494. Original
495. Original
496. Earlier character this continuity
497. Original
498. Original
499. Earlier show (indirectly)
500. Original
502. Comics
503. Comics (different first name)
504. Real person or comics depending on how you look at it
505. Original
506. Comics
507. Comics going by character in general, earlier show going by specific name
508. Real person
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name)
510. Comics
511. Comics
512. Original
513. Original
514. Comics
516. Original
518. Original
519. Original
520. Original
521. Original
522. Original
523. Original
524. Original
525. Comics
527. Real person
528. Original
529. Original
530. Comics
531. Original, but possible nod to real person
532. Comics
534. Original
535. Original
536. Comics (indirectly)
537. Earlier character this continuity
538. Possibly comics, with slightly different spelling
539. Comics
540. Original
541. Original
542. Original
543. Original
544. Comics (indirectly)
545. Original
546. Original
547. Original
548. Original
549. Comics (comics version has no first name)
550. Original
551. Comics
552. Original
553. Original
554. Original
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wi8ki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found)
556. Mythology
557. Original
558. Original
559. Original
560. Original
561. Original
562. Real person
563. Original
564. Comics more or less
566. Original
567. Original
568. Comics
569. Original
570. Comics
572. Original
573. Comics (gender swapped/different real name)
574. Original
575. Original
576. Original
577. Original
578. Original
579. Original
580. Original
581. Original
582. Comics
584. Comics (possibly)
585. Original
586. Comics
587. Original
588. Comics
589. Real person
590. Original
591. Original
592. Real person
593. Original
594. Comics
595. Original
596. Slightly earlier (same episode) character this continuity
597. Original
598. Original
599. Original
600. Comics
601. Original
602. Original
603. Comics
604. Comics (gender swapped, so slightly different real name)
605. Original
606. Original
607. Comics
608. Comics (likely different real name)
609. Original
610. Comics
611. Original
612. Original
613. Comics
614. Original
615. Real person
616. Comics
617. Comics
618. Original
619. Original
620. Original
621. Original
622. Comics
623. Original, though name might be a nod to two real life people
624. Original
625. Comics
626. Original
627. Original
628. Original
629. Real person
630. Real person
631. Comics (indirectly)
632. Original
633. Comics
634. Original
635. Original
636. Comics
637. Original
639. Comics (indirectly)
640. Original
641. Original
642. Comics
643. Original
644. Original
645. Comics
646. Original
647. Original
648. Comics
649. Real person
651. Original
652. Earlier show
653. Original
654. Original
655. Original
656. Original
657. Original
658. Original
659. Original
660. Original
661. Comics
662. Comics
663. Original
664. Comics
665. Original
666. Original; named after real person but not a true counterpart
667. Real person
668. Original
669. Original
670. Original
671. Comics
672. Comics
673. Original
674. Original
675. Original
676. Original
677. Comics
678. Comics
679. Original
681. Comics
682. Original
683. Original
684. Original
685. Comics (possibly)
686. Real person
687. Folklore
688. Original
689. Original
690. Comics
691. Original, though possible nod to real person
692. Original
693. Original
694. Original
695. Real person
696. Original
697. Original
699. Original
700. Comics
701. Original
702. Comics
703. Original
704. Original
705. Comics
706. Original
708. Original
709. Original
710. Original
712. Original
713. Original
714. Original
715. Real person
716. Comics (indirectly)
717. Original
718. Original
719. Comics characters share code name but unclear if actual counterpart
720. Comics (indirectly)
721. Real person
722. Original
723. Original
724. Original
725. Comics
727. Comics
728. Original
729. Similar to comics character with different code name and real name
730. Comics (two characters, one gender swapped)

 

Next 80 occupations added.

368. Original, but make is a nod to a non-DC movie character; military general
369. Earlier show; security head turned terrorist
370. Original; plantation and slave owner
371. Original; judge
372. Original; high school teacher
373. Comics (this version's surname missing a syllable); journalist
374. Original; cultist
376. Original; weapons dealer
377. Original; firefighter
378. Original; engineer
379. Original; CEO
380. Original; student if any
381. Real person; artist
382. Original; police officer, cultist
383. Comics; CEO, businessman, shipping magnate
384. Original; firefighter
385. Real person; newscaster
386. Slightly earlier (same episode) character this continuity; unrevealed
387. Comics; criminal
388. Comics, though comics version's real name is unknown; art thief, museum editor
389. Original; attorney
390. Original; unrevealed
391. Comics; unrevealed
392. Mostly original, though name a nod to a real person; crime boss
393. Comics; mercenary
394. Original; high school student
396. Original; Italian restaurant owner
397. Original; criminal
398. Mostly original. Surname possible reference to comics character and definitely to real person; arms dealer
399. Original; pizza place owner
400. Original; possible but unconfirmed connection to earlier character; prison guard
401. Original; criminal
402. Original; student turned assassin
403. Original; government agent
404. Original; field agent
406. Original; high school student
407. Original; assistant geologist
408. Comics (indirectly); inapplicable
409. Original; personal assistant
410. Real person; Viking shieldmaiden
413. Real person; musician
414. Comics (has different code name with same meaning); assassin
415. Original; spy
416. Slightly earlier (same episode) character this continuity; unrevealed
417. Real person; presumed watercolourist if same as real version
418. Original; police detective
419. Original; unrevealed
420. Comics; criminal
421. Original, but related to comics based character; actor, secret society leader
422. Original; crime syndicate member
423. Earlier character this continuity; unrevealed
424. Comics; police detective
425. Original; unrevealed
427. Real person; presumed inventor and businessman going my real world version
428. Slightly earlier (same episode) character this continuity; arsonist
429. Comics; head of IT, former hacktivist
430. Comics (comics version has different codename); scientist
431. Real person; jazz guitarist
432. Comics (comics version's surname has one fewer syllable); psychiatrist
433. Original; accountant
434. Comics (though this version's real name unrevealed); handmaiden, etc.
435. Real person; Viking warlord
436. Comics (individual based on a race); presumed criminal
437. Original; police officer
438. Real person; national President
439. Original; inventor, motorcyclist
440. Original; unrevealed
441. Comics; mayor
442. Original; high school student
443. Original; corportation founder, inventor
444. Original; doctor, metalsmith
445. Original, though name evokes movie characters; high school graduate
446. Original; unrevaled
447. Comics (slightly different name); high school student
448. Original, though surname may be nod to real person; stevedore
449. Original; personal assistant/double agent
450. Comics (slightly different codename); assassin
451. Possibly comics; university student, stripper
452. Comics (comics version has different real surname); field supervisor
453. Comics; prison chief psychiatrist, criminal
454. Earlier character this continuity; unrevealed
455. Comics; TV new reporter turned sports journalist
456. Original; prison warden
457. Original; personal accountant
458. Real person; poet, playwright
459. Original; high school graduate
460. Original; unrevealed
461. Original; unrevealed
462. Original; pilot of sorts
463. Apparently original, though related to real person; unrevealed
464. Earlier character this continuity; unrevealed
465. Real person; queen
466. Comics; none
467. Original; unrevealed, possible high school student when last seen given age
468. Comics; prison warden
470. Comics; educational facility graduate
471. Comics (indirectly); terrorist
472. Folklore (possibly real person but if so heavily embellished); knight
473. Original; psychologist
474. Original; judge
475. Comics; criiminal
477. Comics (no real name in comics); iron works employee turned criminal
478. Comics (indirectly); unrevealed to the extent applicable
479. Original; criminal gang leader
480. Original; government agent
481. Original; high school student when last seen
482. Original; district attorney
484. Original; presumed student
485. Comics; criminal
486. Original; deputy director/double agent
487. Original; unrevealed
488. Comics; pesonal assistant
489. Original, though surname may be nod to real person; unrevealed
490. Original; crime boss
491. Original; government agent
492. Original; unrevealed
493. Original; high school student when last seen
494. Original; slave turned spy
495. Original; engineer
496. Earlier character this continuity; unrevealed
497. Original; counseling director
498. Original; some sort of criminal boss
499. Earlier show (indirectly); timeline protector
500. Original; restaurant co-owner/waitress
502. Comics; unrevealed, arguably some sort of teacher
503. Comics (different first name); CEO
504. Real person or comics depending on how you look at it; unrevealed
505. Original; unrevealed
506. Comics; presumed criminal
507. Comics going by character in general, earlier show going by specific name; founder/CEO
508. Real person; senator
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member
510. Comics; museum owner/future currator
511. Comics; CEO
512. Original; asylum warden and chief psychiatrist
513. Original; server
514. Comics; district attorney
516. Original; couples counselor and psychiatrist
518. Original; high school student
519. Original; technology expert
520. Original
521. Original
522. Original
523. Original
524. Original
525. Comics
527. Real person
528. Original
529. Original
530. Comics
531. Original, but possible nod to real person
532. Comics
534. Original
535. Original
536. Comics (indirectly)
537. Earlier character this continuity
538. Possibly comics, with slightly different spelling
539. Comics
540. Original
541. Original
542. Original
543. Original
544. Comics (indirectly)
545. Original
546. Original
547. Original
548. Original
549. Comics (comics version has no first name)
550. Original
551. Comics
552. Original
553. Original
554. Original
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wi8ki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found)
556. Mythology
557. Original
558. Original
559. Original
560. Original
561. Original
562. Real person
563. Original
564. Comics more or less
566. Original
567. Original
568. Comics
569. Original
570. Comics
572. Original
573. Comics (gender swapped/different real name)
574. Original
575. Original
576. Original
577. Original
578. Original
579. Original
580. Original
581. Original
582. Comics
584. Comics (possibly)
585. Original
586. Comics
587. Original
588. Comics
589. Real person
590. Original
591. Original
592. Real person
593. Original
594. Comics
595. Original
596. Slightly earlier (same episode) character this continuity
597. Original
598. Original
599. Original
600. Comics
601. Original
602. Original
603. Comics
604. Comics (gender swapped, so slightly different real name)
605. Original
606. Original
607. Comics
608. Comics (likely different real name)
609. Original
610. Comics
611. Original
612. Original
613. Comics
614. Original
615. Real person
616. Comics
617. Comics
618. Original
619. Original
620. Original
621. Original
622. Comics
623. Original, though name might be a nod to two real life people
624. Original
625. Comics
626. Original
627. Original
628. Original
629. Real person
630. Real person
631. Comics (indirectly)
632. Original
633. Comics
634. Original
635. Original
636. Comics
637. Original
639. Comics (indirectly)
640. Original
641. Original
642. Comics
643. Original
644. Original
645. Comics
646. Original
647. Original
648. Comics
649. Real person
651. Original
652. Earlier show
653. Original
654. Original
655. Original
656. Original
657. Original
658. Original
659. Original
660. Original
661. Comics
662. Comics
663. Original
664. Comics
665. Original
666. Original; named after real person but not a true counterpart
667. Real person
668. Original
669. Original
670. Original
671. Comics
672. Comics
673. Original
674. Original
675. Original
676. Original
677. Comics
678. Comics
679. Original
681. Comics
682. Original
683. Original
684. Original
685. Comics (possibly)
686. Real person
687. Folklore
688. Original
689. Original
690. Comics
691. Original, though possible nod to real person
692. Original
693. Original
694. Original
695. Real person
696. Original
697. Original
699. Original
700. Comics
701. Original
702. Comics
703. Original
704. Original
705. Comics
706. Original
708. Original
709. Original
710. Original
712. Original
713. Original
714. Original
715. Real person
716. Comics (indirectly)
717. Original
718. Original
719. Comics characters share code name but unclear if actual counterpart
720. Comics (indirectly)
721. Real person
722. Original
723. Original
724. Original
725. Comics
727. Comics
728. Original
729. Similar to comics character with different code name and real name
730. Comics (two characters, one gender swapped)

 

Next 60 occupations added.

368. Original, but make is a nod to a non-DC movie character; military general
369. Earlier show; security head turned terrorist
370. Original; plantation and slave owner
371. Original; judge
372. Original; high school teacher
373. Comics (this version's surname missing a syllable); journalist
374. Original; cultist
376. Original; weapons dealer
377. Original; firefighter
378. Original; engineer
379. Original; CEO
380. Original; student if any
381. Real person; artist
382. Original; police officer, cultist
383. Comics; CEO, businessman, shipping magnate
384. Original; firefighter
385. Real person; newscaster
386. Slightly earlier (same episode) character this continuity; unrevealed
387. Comics; criminal
388. Comics, though comics version's real name is unknown; art thief, museum editor
389. Original; attorney
390. Original; unrevealed
391. Comics; unrevealed
392. Mostly original, though name a nod to a real person; crime boss
393. Comics; mercenary
394. Original; high school student
396. Original; Italian restaurant owner
397. Original; criminal
398. Mostly original. Surname possible reference to comics character and definitely to real person; arms dealer
399. Original; pizza place owner
400. Original; possible but unconfirmed connection to earlier character; prison guard
401. Original; criminal
402. Original; student turned assassin
403. Original; government agent
404. Original; field agent
406. Original; high school student
407. Original; assistant geologist
408. Comics (indirectly); inapplicable
409. Original; personal assistant
410. Real person; Viking shieldmaiden
413. Real person; musician
414. Comics (has different code name with same meaning); assassin
415. Original; spy
416. Slightly earlier (same episode) character this continuity; unrevealed
417. Real person; presumed watercolourist if same as real version
418. Original; police detective
419. Original; unrevealed
420. Comics; criminal
421. Original, but related to comics based character; actor, secret society leader
422. Original; crime syndicate member
423. Earlier character this continuity; unrevealed
424. Comics; police detective
425. Original; unrevealed
427. Real person; presumed inventor and businessman going my real world version
428. Slightly earlier (same episode) character this continuity; arsonist
429. Comics; head of IT, former hacktivist
430. Comics (comics version has different codename); scientist
431. Real person; jazz guitarist
432. Comics (comics version's surname has one fewer syllable); psychiatrist
433. Original; accountant
434. Comics (though this version's real name unrevealed); handmaiden, etc.
435. Real person; Viking warlord
436. Comics (individual based on a race); presumed criminal
437. Original; police officer
438. Real person; national President
439. Original; inventor, motorcyclist
440. Original; unrevealed
441. Comics; mayor
442. Original; high school student
443. Original; corportation founder, inventor
444. Original; doctor, metalsmith
445. Original, though name evokes movie characters; high school graduate
446. Original; unrevaled
447. Comics (slightly different name); high school student
448. Original, though surname may be nod to real person; stevedore
449. Original; personal assistant/double agent
450. Comics (slightly different codename); assassin
451. Possibly comics; university student, stripper
452. Comics (comics version has different real surname); field supervisor
453. Comics; prison chief psychiatrist, criminal
454. Earlier character this continuity; unrevealed
455. Comics; TV new reporter turned sports journalist
456. Original; prison warden
457. Original; personal accountant
458. Real person; poet, playwright
459. Original; high school graduate
460. Original; unrevealed
461. Original; unrevealed
462. Original; pilot of sorts
463. Apparently original, though related to real person; unrevealed
464. Earlier character this continuity; unrevealed
465. Real person; queen
466. Comics; none
467. Original; unrevealed, possible high school student when last seen given age
468. Comics; prison warden
470. Comics; educational facility graduate
471. Comics (indirectly); terrorist
472. Folklore (possibly real person but if so heavily embellished); knight
473. Original; psychologist
474. Original; judge
475. Comics; criiminal
477. Comics (no real name in comics); iron works employee turned criminal
478. Comics (indirectly); unrevealed to the extent applicable
479. Original; criminal gang leader
480. Original; government agent
481. Original; high school student when last seen
482. Original; district attorney
484. Original; presumed student
485. Comics; criminal
486. Original; deputy director/double agent
487. Original; unrevealed
488. Comics; pesonal assistant
489. Original, though surname may be nod to real person; unrevealed
490. Original; crime boss
491. Original; government agent
492. Original; unrevealed
493. Original; high school student when last seen
494. Original; slave turned spy
495. Original; engineer
496. Earlier character this continuity; unrevealed
497. Original; counseling director
498. Original; some sort of criminal boss
499. Earlier show (indirectly); timeline protector
500. Original; restaurant co-owner/waitress
502. Comics; unrevealed, arguably some sort of teacher
503. Comics (different first name); CEO
504. Real person or comics depending on how you look at it; unrevealed
505. Original; unrevealed
506. Comics; presumed criminal
507. Comics going by character in general, earlier show going by specific name; founder/CEO
508. Real person; senator
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member
510. Comics; museum owner/future currator
511. Comics; CEO
512. Original; asylum warden and chief psychiatrist
513. Original; server
514. Comics; district attorney
516. Original; couples counselor and psychiatrist
518. Original; high school student
519. Original; technology expert
520. Original; unrevealed
521. Original; senator
522. Original; national President
523. Original; unrevealed, possible student
524. Original; event coordinator and moderator
525. Comics; police sergeant and task force leader turned criminal
527. Original; spy of sorts
528. Original; unrevealed, likely student if any
529. Original; unrevealed
530. Comics; criminal
531. Original, but possible nod to real person; wrestler and film star
532. Comics; military sergeant and bomb defusal specialist
534. Original; student, also vigilante in one future
535. Original; unrevealed, likely student if any
536. Comics (indirectly); timeline protector
537. Earlier character this continuity; posed as police officer
538. Possibly comics, with slightly different spelling; terrorist
539. Comics; investor
540. Original; unrevealed
541. Original; government agent
542. Original; mercenary arsonist
543. Original; psychologist
544. Comics (indirectly); company owner
545. Original; army leader
546. Original; slave
547. Original; actor
548. Original; being specific would reveal most of the answer, but some sort of mayor aide.
549. Comics (comics version has no first name); bodyguard
550. Original; controlled demolitionist, terrorist
551. Comics; reformed criminal
552. Original; housewife
553. Original; security agent
554. Original; government agent
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such
556. Mythology; likely none
557. Original; high school student
558. Original; unrevealed
559. Original; judge
560. Original; construction manager
561. Original; bartender, alien rights activist
562. Real person; pirate
563. Original; child trafficker
564. Comics more or less;  Nazi Party member, SS-Standartenführer
566. Original; police officer
567. Original; company vice president
568. Comics; vigilante
569. Original; drug dealer
570. Comics; vigilante
572. Original; student
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal
574. Original; asylum inmate
575. Original; research assistant
576. Original; some sort of special agent
577. Original; housewife/restaurant assistant
578. Original; pastor
579. Original; science centre owner
580. Original; unrevealed, likely student if any
581. Original; gangster
582. Comics; unrevealed
584. Comics (possibly); unrevealed
585. Original; police officer
586. Comics; queen
587. Original; high school music teacher
588. Comics; Linguistics and Semiotics teacher, cultist
589. Real person; physicist
590. Original; bounty hunter
591. Original; police officer
592. Real person; phone operator, inventor, actress
593. Original; army officer
594. Comics; slam harvester, dive instructor
595. Original; national president
596. Slightly earlier (same episode) character this continuity; unrevealed
597. Original; secretary
598. Original; judge
599. Original; unrevealed
600. Comics; criminal
601. Original; unrevealed
602. Original; spy of sorts; posed as senator
603. Comics; unrevealed
604. Comics (gender swapped, so slightly different real name); criminal
605. Original; cyberterrorist, now high school student
606. Original; criminal
607. Comics; lab assistant
608. Comics (likely different real name); criminal, weapons dealer
609. Original; scientist
610. Comics; serial killer
611. Original; mixed martial artist
612. Original; police officer
613. Comics; assassin, CEO
614. Original; newswoman
615. Real person; royalty (exact type considered part of name)
616. Comics; vigilante
617. Comics; scientist
618. Original; money launderer
619. Original; unrevealed if any
620. Original; national President
621. Original; bodyguard, plus another job that's part of the answer
622. Comics; assassin
623. Original, though name might be a nod to two real life people; business fonder, investment magnate, philanthropist, socialite
624. Original; unrevealed, likely student
625. Comics; nuclear truck driver
626. Original; crime lord (code name refers to another occupation that he doesn't actually have)
627. Original; police officer
628. Original; cultist
629. Real person; nurse
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician
631. Comics (indirectly); posed as chief of police
632. Original; accountant
633. Comics; security agent, police officer
634. Original; unrevealed
635. Original; unrevealed
636. Comics; technology firm employee
637. Original; arms dealer
639. Comics (indirectly); timeline protector
640. Original; special agent of sorts
641. Original; unrevealed
642. Comics; scientist
643. Original; bus Driver, criminal
644. Original; receptionist
645. Comics; mental health evaluation team clinician
646. Original; unrevealed
647. Original; criminal
648. Comics; vigilante
649. Real person; theatrical producer
651. Original; councilman
652. Earlier show; TV newscaster
653. Original; bartender
654. Original; unrevealed
655. Original, but resembles character based on comics; mobster
656. Original; doctor
657. Original; police officer
658. Original; reporter
659. Original; research scientist
660. Original; college student
661. Comics; unrevealed if any
662. Comics; drug dealer
663. Original; TV anchorman and news reporter
664. Comics; student
665. Original; editor-in-chief
666. Original; named after real person but not a true counterpart; criminal
667. Real person
668. Original
669. Original
670. Original
671. Comics
672. Comics
673. Original
674. Original
675. Original
676. Original
677. Comics
678. Comics
679. Original
681. Comics
682. Original
683. Original
684. Original
685. Comics (possibly)
686. Real person
687. Folklore
688. Original
689. Original
690. Comics
691. Original, though possible nod to real person
692. Original
693. Original
694. Original
695. Real person
696. Original
697. Original
699. Original
700. Comics
701. Original
702. Comics
703. Original
704. Original
705. Comics
706. Original
708. Original
709. Original
710. Original
712. Original
713. Original
714. Original
715. Real person
716. Comics (indirectly)
717. Original
718. Original
719. Comics characters share code name but unclear if actual counterpart
720. Comics (indirectly)
721. Real person
722. Original
723. Original
724. Original
725. Comics
727. Comics
728. Original
729. Similar to comics character with different code name and real name
730. Comics (two characters, one gender swapped)

 

For today and tomorrow (until 9 pm PDT) questions are unlimited (including question types), but ask in batches of up to 20 so I have time to catch up before dealing with more questions. I'm not going to answer 300 questions at once.

Possible questions:
What year where they first seen?
What year where they last seen?
Are they alive in 2022?
What organization do they work for/lead?
What is their nationality?
What "race" (Earth human, Earth feline, robot, VR being, Kryptonian, etc.) are they?
 

For most characters from previous non-Arrwoverse sources, I've added in the source. In a couple of cases I left out the source because the direct counterpart first appeared in their own title.

368. Original, but name is a nod to a non-DC movie character; military general
369. Earlier show; security head turned terrorist; Superman: The Animated Series
370. Original; plantation and slave owner
371. Original; judge
372. Original; high school teacher
373. Comics (this version's surname missing a syllable); journalist; The Flash
374. Original; cultist
376. Original; weapons dealer
377. Original; firefighter
378. Original; engineer
379. Original; CEO
380. Original; student if any
381. Real person; artist
382. Original; police officer, cultist
383. Comics; CEO, businessman, shipping magnate; Green Arrow
384. Original; firefighter
385. Real person; newscaster
386. Slightly earlier (same episode) character this continuity; unrevealed
387. Comicss, though comics version's real name is unknown; criminal; All-Flash
388. Comic; art thief, museum editor; Batwoman
389. Original; attorney
390. Original; unrevealed
391. Comics; unrevealed; Teen Titans Special
392. Mostly original, though name a nod to a real person; crime boss
393. Comics; mercenary; Nightwing
394. Original; high school student
396. Original; Italian restaurant owner
397. Original; criminal
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing
399. Original; pizza place owner
400. Original; possible but unconfirmed connection to earlier character; prison guard
401. Original; criminal
402. Original; student turned assassin
403. Original; government agent
404. Original; field agent
406. Original; high school student
407. Original; assistant geologist
408. Comics (indirectly); inapplicable; Batman
409. Original; personal assistant
410. Real person; Viking shieldmaiden
413. Real person; musician
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow
415. Original; spy
416. Slightly earlier (same episode) character this continuity; unrevealed
417. Real person; presumed watercolourist if same as real version
418. Original; police detective
419. Original; unrevealed
420. Comics; criminal; All-American Comics
421. Original, but related to comics based character; actor, secret society leader
422. Original; crime syndicate member
423. Earlier character this continuity; unrevealed
424. Comics; police detective; The Flash
425. Original; unrevealed
427. Real person; presumed inventor and businessman going my real world version
428. Slightly earlier (same episode) character this continuity; arsonist
429. Comics; head of IT, former hacktivist; OMAC
430. Comics (comics version has different codename); scientist; Showcase
431. Real person; jazz guitarist
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of A,merica
433. Original; accountant
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures
435. Real person; Viking warlord
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior
437. Original; police officer
438. Real person; nation's President
439. Original; inventor, motorcyclist
440. Original; unrevealed
441. Comics; mayor; Green Arrow
442. Original; high school student
443. Original; corportation founder, inventor
444. Original; doctor, metalsmith
445. Original, though name evokes movie characters; high school graduate
446. Original; unrevaled
447. Comics (slightly different name); high school student; Steel
448. Original, though surname may be nod to real person; stevedore
449. Original; personal assistant/double agent
450. Comics (slightly different codename); assassin; possibly Green Arrow
451. Possibly comics; university student, stripper; Adventure Comics
452. Comics (comics version has different real surname); field supervisor; The Flash
453. Comics; prison chief psychiatrist, criminal; The Flash
454. Earlier character this continuity; unrevealed
455. Comics; TV new reporter turned sports journalist; The Flash
456. Original; prison warden
457. Original; personal accountant
458. Real person; poet, playwright
459. Original; high school graduate
460. Original; unrevealed
461. Original; unrevealed
462. Original; pilot of sorts
463. Apparently original, though related to real person; unrevealed
464. Earlier character this continuity; unrevealed
465. Real person; queen
466. Comics; none; Convergence: Superman
467. Original; unrevealed, possible high school student when last seen given age
468. Comics; prison warden; Bite Club
470. Comics; educational facility graduate; Detective Comics
471. Comics (indirectly/different first name); terrorist; Supergirl
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal
473. Original; psychologist
474. Original; judge
475. Comics; criminal; The Flash Secret Files and Origins
477. Comics; iron works employee turned criminal; The Flash: Iron Heights
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics
479. Original; criminal gang leader
480. Original; government agent
481. Original; high school student when last seen
482. Original; district attorney
484. Original; presumed student
485. Comics; criminal; Robin Annual
486. Original; deputy director/double agent
487. Original; unrevealed
488. Comics; pesonal assistant; Action Comics
489. Original, though surname may be nod to real person; unrevealed
490. Original; crime boss
491. Original; government agent
492. Original; unrevealed
493. Original; high school student when last seen
494. Original; slave turned spy
495. Original; engineer
496. Earlier character this continuity; unrevealed
497. Original; counseling director
498. Original; some sort of criminal boss
499. Earlier show (indirectly); timeline protector; The Secrets of Isis
500. Original; restaurant co-owner/waitress
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold
503. Comics (different first name); CEO; Batman
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics
505. Original; unrevealed
506. Comics; presumed criminal; Nightwing
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville
508. Real person; senator
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains Unoted
510. Comics; museum owner/future currator; The Flash
511. Comics; CEO; The Power Company
512. Original; asylum warden and chief psychiatrist
513. Original; server
514. Comics; district attorney; The Flash
516. Original; couples counselor and psychiatrist
518. Original; high school student
519. Original; technology expert
520. Original; unrevealed
521. Original; senator
522. Original; nation's President
523. Original; unrevealed, possible student
524. Original; event coordinator and moderator
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special
527. Original; spy of sorts
528. Original; unrevealed, likely student if any
529. Original; unrevealed
530. Comics; criminal; first appeared in his own title
531. Original, but possible nod to real person; wrestler and film star
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm
534. Original; student, also vigilante in one future
535. Original; unrevealed, likely student if any
536. Comics (indirectly); timeline protector; Justice Society of America
537. Earlier character this continuity; posed as police officer
538. Possibly comics, with slightly different spelling; terrorist; Superwoman
539. Original; investor
540. Original; unrevealed
541. Original; government agent
542. Original; mercenary arsonist
543. Original; psychologist
544. Comics (indirectly); company owner; Justice League of America
545. Original; army leader
546. Original; slave
547. Original; actor
548. Original; being specific would reveal most of the answer, but some sort of mayor aide.
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One
550. Original; controlled demolitionist, terrorist
551. Comics; reformed criminal; The Flash
552. Original; housewife
553. Original; security agent
554. Original; government agent
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements)
556. Mythology; likely none; Greek myths
557. Original; high school student
558. Original; unrevealed
559. Original; judge
560. Original; construction manager
561. Original; bartender, alien rights activist
562. Real person; pirate
563. Original; child trafficker
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics
566. Original; police officer
567. Original; company vice president
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman
569. Original; drug dealer
570. Comics; vigilante; Action Comics
572. Original; student
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm
574. Original; asylum inmate
575. Original; research assistant
576. Original; some sort of special agent
577. Original; housewife/restaurant assistant
578. Original; pastor
579. Original; science centre owner
580. Original; unrevealed, likely student if any
581. Original; gangster
582. Comics; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth
585. Original; police officer
586. Comics; queen; Action Comics
587. Original; high school music teacher
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest
589. Real person; physicist
590. Original; bounty hunter
591. Original; police officer
592. Real person; phone operator, inventor, actress
593. Original; army officer
594. Comics; slam harvester, dive instructor; Green Arrow: Year One
595. Original; nation's president
596. Slightly earlier (same episode) character this continuity; unrevealed
597. Original; secretary
598. Original; judge
599. Original; unrevealed
600. Comics; criminal; The Brave and the Bold
601. Original; unrevealed
602. Original; spy of sorts; posed as senator
603. Comics; unrevealed; Batman: Shadow of the Bat
604. Comics (gender swapped, so slightly different real name); criminal; The Flash
605. Original; cyberterrorist, now high school student
606. Original; criminal
607. Comics; lab assistant; The Fury of Firestorm
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash
609. Original; scientist
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name)
611. Original; mixed martial artist
612. Original; police officer
613. Comics; assassin, CEO; Young Justice
614. Original; newswoman
615. Real person; royalty (exact type considered part of name)
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics
617. Comics; scientist; The Brave and the Bold
618. Original; money launderer
619. Original; unrevealed if any
620. Original; nation's President
621. Original; bodyguard, plus another job that's part of the answer
622. Comics; assassin; first appeared in own series
623. Original, though name might be a nod to two real life people; business fonder, investment magnate, philanthropist, socialite
624. Original; unrevealed, likely student
625. Comics; nuclear truck driver; The Flash: Iron Heights
626. Original; crime lord (code name refers to another occupation that he doesn't actually have)
627. Original; police officer
628. Original; cultist
629. Real person; nurse
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins
632. Original; accountant
633. Comics; security agent, police officer; Robin
634. Original; unrevealed
635. Original; unrevealed
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash
637. Original; arms dealer
639. Comics (indirectly); timeline protector; Hellblazer
640. Original; special agent of sorts
641. Original; unrevealed
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics
643. Original; bus driver, criminal
644. Original; receptionist
645. Comics; mental health evaluation team clinician; Vigilante
646. Original; unrevealed
647. Original; criminal
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization)
649. Real person; theatrical producer
651. Original; councilman
652. Earlier show; TV newscaster; The Flash (1990 series)
653. Original; bartender
654. Original; unrevealed
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America
656. Original; doctor
657. Original; police officer
658. Original; reporter
659. Original; research scientist
660. Original; college student
661. Comics; unrevealed if any; Martian Manhunter
662. Comics; drug dealer; Green Arrow and Black Canary
663. Original; TV anchorman and news reporter
664. Comics (different real surname); student; Flashpoint
665. Original; editor-in-chief
666. Original; named after real person but not a true counterpart; criminal
667. Real person; astronaut
668. Original; drug harvester, deckhand
669. Original; unrevealed
670. Original; anchorwoman
671. Comics; criminal, orphanage head; All-American Comics
672. Comics; assassin; WildC.A.T.s
673. Original; bar owner
674. Original; unrevealed
675. Original; police officer
676. Original; criminal
677. Comics; astronomer, assassin; Crisis on Infinite Earths
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America
681. Comics; newspaper intern turned police detective; Showcase
682. Original; inmate
683. Original; unrevealed
684. Original; some sort of jailer (can't be more specific without revealing too much fo the answer)
685. Comics (possibly); police captain; possibly Vigilante
686. Real person; unrevealed, student if any, presumed subsequent novelist
687. Folklore; probably none; folklore of the Americas
688. Original; unrevealed
689. Original; music student graduate
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader
692. Original; executive staffer
693. Original; sorcereres cult member
694. Original; scientist
695. Real person; army lieutenant general
696. Original; night club owner
697. Original; executive employee
699. Original; news correspondent
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary
701. Original; army member
702. Comics; scientist; The Fury of Firestorm
703. Original; security agent, criminal
704. Original; scientist
705. Comics; criminal; possibly Green Arrow: Rebirth
706. Original; singer
708. Original; football player running back
709. Original; media employee
710. Original; scientist
712. Original; unrevealed
713. Original; director
714. Original; police officer
715. Real person; musician
716. Comics (indirectly); science based employee to the extent applicable; Action Comics
717. Original; scientist
718. Original; unrevealed
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans
720. Comics (indirectly); posed as lawyer; The Flash
721. Real person; federal agency Director
722. Original; criminal
723. Original; federal agent
724. Original; storage worker
725. Comics; terrorist financier; Young Justice
727. Comics; henchman; Action Comics
728. Original; mobster, mechanic, repair shop owner
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name)

 

A little over four hours left. Given how obscure many of these are, would people prefer the next clues be character specific or should I move onto the "Hangman" rounds so people who have no idea who these are can still guess?

Next 80 character specific clues added.

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows
370. Original; plantation and slave owner; fought zombie soldiers
371. Original; judge; killed by someone whose trial she presided over
372. Original; high school teacher; statutory rapist
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer
374. Original; cultist; escaped a raid on boss' lair initially
376. Original; weapons dealer; led a street gang
377. Original; firefighter; fire department including her is recurring
378. Original; engineer; reported co-worker to boss, causing her to be fired
379. Original; CEO; eyes were gouged out
380. Original; student if any; parents killed by assassin
381. Real person; artist; known for surreal art
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling
384. Original; firefighter; got doused in turpentine
385. Real person; newscaster; played by herself, though real person reports out of a different city
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character
389. Original; attorney; represented the main villain of the season
390. Original; unrevealed; flirted with cast character
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season
394. Original; high school student; plays football and likes to drink
396. Original; Italian restaurant owner; homophobic
397. Original; criminal; blackmail and threatened the life of someone
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain
399. Original; pizza place owner; hates aliens
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049
401. Original; criminal; used an electrical blaster
402. Original; student turned assassin; kidnapped by extreme sect
403. Original; government agent; worked with the main villain of the season
404. Original; field agent; removed a villain's stinger from their victim's body
406. Original; high school student; son of a recurring villain
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father
409. Original; personal assistant; host of alien consciousness
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages
413. Real person; musician; performed at night club opening and was played by himself
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain
415. Original; spy; proficient in air radio terminology
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist
418. Original; police detective; took part in getting innocents convicted
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time
420. Comics; criminal; All-American Comics; created giant version of recurring toy character
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character
422. Original; crime syndicate member; stole liquid nitrogen
423. Earlier character this continuity; unrevealed; read a poem about bread
424. Comics; police detective; The Flash; partner (in the job sense) of cast character
425. Original; unrevealed; uncle of cast character
427. Real person; presumed inventor and businessman going by real world version; replaced by robot
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers
431. Real person; jazz guitarist; killed by minotaur in erased timeline
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality
433. Original; accountant; actions led to extortion, kidnapping, and murder
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals
435. Real person; Viking warlord; thought that toy from her future had divine messages
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume
438. Real person; nation's President; encouraged by someone to fire a missle at cuba
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles
440. Original; unrevealed; mother of cast characters
441. Comics; mayor; Green Arrow; killed by rogue vigilante group
442. Original; high school student; family moved due to father's imprisonment
443. Original; corportation founder, inventor; main villain of a season
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline
446. Original; unrevaled; fostered alien child for a time
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum
454. Earlier character this continuity; unrevealed; appeared after solving an equation
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth
456. Original; prison warden; fired for misuse of prisoners
457. Original; personal accountant; is a demon and possibly hasn't been to Earth
458. Real person; poet, playwright; heroes visited him to get a piece of a loom
459. Original; high school graduate; became pregnant with a time traveller's baby
460. Original; unrevealed; mother of a cast character
461. Original; unrevealed; had an emotional affair in a VR world
462. Original; pilot of sorts; was saved from time pirates by heroes
463. Apparently original, though related to real person; unrevealed; uncle of famous musician
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish
465. Real person; queen; revived long after being decapitated
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains
473. Original; psychologist; treated a cast character
474. Original; judge; precided over trial of a cast character (but not main character)
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to moth of cast chatracters
479. Original; criminal gang leader; used alien tech in crimes
480. Original; government agent; recurring ally of cast characters
481. Original; high school student when last seen; close friend of cast character during teen years
482. Original; district attorney; questioned main character during his or her trial
484. Original; presumed student; nephew of cast character
485. Comics; criminal; Robin Annual; could morph hands into blades
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain
487. Original; unrevealed; villager in an African nation
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against
490. Original; crime boss; killed by gaseous villain
491. Original; government agent; hunted a villain who killed him
492. Original; unrevealed; killed by parasitic villain
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen
494. Original; slave turned spy; tasked with stealing battle plans from an enemy
495. Original; engineer; super-villain tried to take him captive
496. Earlier character this continuity; unrevealed; resides in bottled Earth
497. Original; counseling director; disliked for strict methods in running camp
498. Original; some sort of criminal boss; mother of cast character's children
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality
503. Comics (different first name); CEO; Batman; mother of major character
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart
506. Comics; presumed criminal; Nightwing; helped stop a drone strike
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain
508. Real person; senator; betrayed his best friend
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character
511. Comics; CEO; The Power Company; had nannite-created powers
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin
513. Original; server; played Dungeons & Dragons with cast character
514. Comics; district attorney; The Flash; prosecuted main character in trial
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage
518. Original; high school student; son of a police commissioner
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth
520. Original; unrevealed; childhood bully of major villain
521. Original; senator; initially had anti-alien views
522. Original; nation's President; gave a speech on a late hero
523. Original; unrevealed, possible student; alien who likely never visited Earth
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue
527. Original; spy of sorts; impersonated cast character
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being
529. Original; unrevealed; grandmother of cast character
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact
534. Original; student, also vigilante in one future; legacy villain in erased future
535. Original; unrevealed, likely student if any; from a post-Soviet country
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet
539. Original; investor; invested in an attempt to make a museum
540. Original; unrevealed; husband shot by card themed villain
541. Original; government agent
542. Original; mercenary arsonist
543. Original; psychologist
544. Comics (indirectly); company owner; Justice League of America
545. Original; army leader
546. Original; slave
547. Original; actor
548. Original; being specific would reveal most of the answer, but some sort of mayor aide.
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One
550. Original; controlled demolitionist, terrorist
551. Comics; reformed criminal; The Flash
552. Original; housewife
553. Original; security agent
554. Original; government agent
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements)
556. Mythology; likely none; Greek myths
557. Original; high school student
558. Original; unrevealed
559. Original; judge
560. Original; construction manager
561. Original; bartender, alien rights activist
562. Real person; pirate
563. Original; child trafficker
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics
566. Original; police officer
567. Original; company vice president
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman
569. Original; drug dealer
570. Comics; vigilante; Action Comics
572. Original; student
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm
574. Original; asylum inmate
575. Original; research assistant
576. Original; some sort of special agent
577. Original; housewife/restaurant assistant
578. Original; pastor
579. Original; science centre owner
580. Original; unrevealed, likely student if any
581. Original; gangster
582. Comics; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth
585. Original; police officer
586. Comics; queen; Action Comics
587. Original; high school music teacher
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest
589. Real person; physicist
590. Original; bounty hunter
591. Original; police officer
592. Real person; phone operator, inventor, actress
593. Original; army officer
594. Comics; slam harvester, dive instructor; Green Arrow: Year One
595. Original; nation's president
596. Slightly earlier (same episode) character this continuity; unrevealed
597. Original; secretary
598. Original; judge
599. Original; unrevealed
600. Comics; criminal; The Brave and the Bold
601. Original; unrevealed
602. Original; spy of sorts; posed as senator
603. Comics; unrevealed; Batman: Shadow of the Bat
604. Comics (gender swapped, so slightly different real name); criminal; The Flash
605. Original; cyberterrorist, now high school student
606. Original; criminal
607. Comics; lab assistant; The Fury of Firestorm
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash
609. Original; scientist
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name)
611. Original; mixed martial artist
612. Original; police officer
613. Comics; assassin, CEO; Young Justice
614. Original; newswoman
615. Real person; royalty (exact type considered part of name)
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics
617. Comics; scientist; The Brave and the Bold
618. Original; money launderer
619. Original; unrevealed if any
620. Original; nation's President
621. Original; bodyguard, plus another job that's part of the answer
622. Comics; assassin; first appeared in own series
623. Original, though name might be a nod to two real life people; business fonder, investment magnate, philanthropist, socialite
624. Original; unrevealed, likely student
625. Comics; nuclear truck driver; The Flash: Iron Heights
626. Original; crime lord (code name refers to another occupation that he doesn't actually have)
627. Original; police officer
628. Original; cultist
629. Real person; nurse
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins
632. Original; accountant
633. Comics; security agent, police officer; Robin
634. Original; unrevealed
635. Original; unrevealed
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash
637. Original; arms dealer
639. Comics (indirectly); timeline protector; Hellblazer
640. Original; special agent of sorts
641. Original; unrevealed
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics
643. Original; bus driver, criminal
644. Original; receptionist
645. Comics; mental health evaluation team clinician; Vigilante
646. Original; unrevealed
647. Original; criminal
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization)
649. Real person; theatrical producer
651. Original; councilman
652. Earlier show; TV newscaster; The Flash (1990 series)
653. Original; bartender
654. Original; unrevealed
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America
656. Original; doctor
657. Original; police officer
658. Original; reporter
659. Original; research scientist
660. Original; college student
661. Comics; unrevealed if any; Martian Manhunter
662. Comics; drug dealer; Green Arrow and Black Canary
663. Original; TV anchorman and news reporter
664. Comics (different real surname); student; Flashpoint
665. Original; editor-in-chief
666. Original; named after real person but not a true counterpart; criminal
667. Real person; astronaut
668. Original; drug harvester, deckhand
669. Original; unrevealed
670. Original; anchorwoman
671. Comics; criminal, orphanage head; All-American Comics
672. Comics; assassin; WildC.A.T.s
673. Original; bar owner
674. Original; unrevealed
675. Original; police officer
676. Original; criminal
677. Comics; astronomer, assassin; Crisis on Infinite Earths
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America
681. Comics; newspaper intern turned police detective; Showcase
682. Original; inmate
683. Original; unrevealed
684. Original; some sort of jailer (can't be more specific without revealing too much fo the answer)
685. Comics (possibly); police captain; possibly Vigilante
686. Real person; unrevealed, student if any, presumed subsequent novelist
687. Folklore; probably none; folklore of the Americas
688. Original; unrevealed
689. Original; music student graduate
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader
692. Original; executive staffer
693. Original; sorcereres cult member
694. Original; scientist
695. Real person; army lieutenant general
696. Original; night club owner
697. Original; executive employee
699. Original; news correspondent
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary
701. Original; army member
702. Comics; scientist; The Fury of Firestorm
703. Original; security agent, criminal
704. Original; scientist
705. Comics; criminal; possibly Green Arrow: Rebirth
706. Original; singer
708. Original; football player running back
709. Original; media employee
710. Original; scientist
712. Original; unrevealed
713. Original; director
714. Original; police officer
715. Real person; musician
716. Comics (indirectly); science based employee to the extent applicable; Action Comics
717. Original; scientist
718. Original; unrevealed
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans
720. Comics (indirectly); posed as lawyer; The Flash
721. Real person; federal agency Director
722. Original; criminal
723. Original; federal agent
724. Original; storage worker
725. Comics; terrorist financier; Young Justice
727. Comics; henchman; Action Comics
728. Original; mobster, mechanic, repair shop owner
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name)

 

Next 80 character specific clues added.

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows
370. Original; plantation and slave owner; fought zombie soldiers
371. Original; judge; killed by someone whose trial she presided over
372. Original; high school teacher; statutory rapist
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer
374. Original; cultist; escaped a raid on boss' lair initially
376. Original; weapons dealer; led a street gang
377. Original; firefighter; fire department including her is recurring
378. Original; engineer; reported co-worker to boss, causing her to be fired
379. Original; CEO; eyes were gouged out
380. Original; student if any; parents killed by assassin
381. Real person; artist; known for surreal art
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling
384. Original; firefighter; got doused in turpentine
385. Real person; newscaster; played by herself, though real person reports out of a different city
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character
389. Original; attorney; represented the main villain of the season
390. Original; unrevealed; flirted with cast character
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season
394. Original; high school student; plays football and likes to drink
396. Original; Italian restaurant owner; homophobic
397. Original; criminal; blackmail and threatened the life of someone
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain
399. Original; pizza place owner; hates aliens
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049
401. Original; criminal; used an electrical blaster
402. Original; student turned assassin; kidnapped by extreme sect
403. Original; government agent; worked with the main villain of the season
404. Original; field agent; removed a villain's stinger from their victim's body
406. Original; high school student; son of a recurring villain
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father
409. Original; personal assistant; host of alien consciousness
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages
413. Real person; musician; performed at night club opening and was played by himself
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain
415. Original; spy; proficient in air radio terminology
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist
418. Original; police detective; took part in getting innocents convicted
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time
420. Comics; criminal; All-American Comics; created giant version of recurring toy character
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character
422. Original; crime syndicate member; stole liquid nitrogen
423. Earlier character this continuity; unrevealed; read a poem about bread
424. Comics; police detective; The Flash; partner (in the job sense) of cast character
425. Original; unrevealed; uncle of cast character
427. Real person; presumed inventor and businessman going by real world version; replaced by robot
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers
431. Real person; jazz guitarist; killed by minotaur in erased timeline
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality
433. Original; accountant; actions led to extortion, kidnapping, and murder
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals
435. Real person; Viking warlord; thought that toy from her future had divine messages
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume
438. Real person; nation's President; encouraged by someone to fire a missle at cuba
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles
440. Original; unrevealed; mother of cast characters
441. Comics; mayor; Green Arrow; killed by rogue vigilante group
442. Original; high school student; family moved due to father's imprisonment
443. Original; corportation founder, inventor; main villain of a season
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline
446. Original; unrevaled; fostered alien child for a time
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum
454. Earlier character this continuity; unrevealed; appeared after solving an equation
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth
456. Original; prison warden; fired for misuse of prisoners
457. Original; personal accountant; is a demon and possibly hasn't been to Earth
458. Real person; poet, playwright; heroes visited him to get a piece of a loom
459. Original; high school graduate; became pregnant with a time traveller's baby
460. Original; unrevealed; mother of a cast character
461. Original; unrevealed; had an emotional affair in a VR world
462. Original; pilot of sorts; was saved from time pirates by heroes
463. Apparently original, though related to real person; unrevealed; uncle of famous musician
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish
465. Real person; queen; revived long after being decapitated
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains
473. Original; psychologist; treated a cast character
474. Original; judge; precided over trial of a cast character (but not main character)
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to moth of cast chatracters
479. Original; criminal gang leader; used alien tech in crimes
480. Original; government agent; recurring ally of cast characters
481. Original; high school student when last seen; close friend of cast character during teen years
482. Original; district attorney; questioned main character during his or her trial
484. Original; presumed student; nephew of cast character
485. Comics; criminal; Robin Annual; could morph hands into blades
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain
487. Original; unrevealed; villager in an African nation
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against
490. Original; crime boss; killed by gaseous villain
491. Original; government agent; hunted a villain who killed him
492. Original; unrevealed; killed by parasitic villain
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen
494. Original; slave turned spy; tasked with stealing battle plans from an enemy
495. Original; engineer; super-villain tried to take him captive
496. Earlier character this continuity; unrevealed; resides in bottled Earth
497. Original; counseling director; disliked for strict methods in running camp
498. Original; some sort of criminal boss; mother of cast character's children
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality
503. Comics (different first name); CEO; Batman; mother of major character
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart
506. Comics; presumed criminal; Nightwing; helped stop a drone strike
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain
508. Real person; senator; betrayed his best friend
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character
511. Comics; CEO; The Power Company; had nannite-created powers
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin
513. Original; server; played Dungeons & Dragons with cast character
514. Comics; district attorney; The Flash; prosecuted main character in trial
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage
518. Original; high school student; son of a police commissioner
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth
520. Original; unrevealed; childhood bully of major villain
521. Original; senator; initially had anti-alien views
522. Original; nation's President; gave a speech on a late hero
523. Original; unrevealed, possible student; alien who likely never visited Earth
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue
527. Original; spy of sorts; impersonated cast character
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being
529. Original; unrevealed; grandmother of cast character
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact
534. Original; student, also vigilante in one future; legacy villain in erased future
535. Original; unrevealed, likely student if any; from a post-Soviet country
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet
539. Original; investor; invested in an attempt to make a museum
540. Original; unrevealed; husband shot by card themed villain
541. Original; government agent; electrocuted underwater
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated
543. Original; psychologist; kidnapped by group run by villain wanting advice
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother
545. Original; army leader; alien who helped try to take over the Earth
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes
547. Original; actor; posed as father of cast character
548. Original; being specific would reveal most of the answer, but some sort of mayor aide; affected by some sort of outbreak at City Hall
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement
552. Original; housewife; wife of major villain
553. Original; security agent; ex-husband of cast character
554. Original; government agent; hunted a villain who killed him
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements); if separate character, they share DNA of a major character mixed with an alien's
556. Mythology; likely none; Greek myths; known to party at college fraternities
557. Original; high school student; ex-boyfriend of cast character
558. Original; likely student of any; son of a later superhero
559. Original; judge; let main character out on bail
560. Original; construction manager; helped build amusement park
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens
562. Real person; pirate; brought back after death
563. Original; child trafficker; kidnapped main character while latter still a kid
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength
566. Original; police officer; arrested cast characters for disrespecting him and partner
567. Original; company vice president; helped foot bill for free medical event
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character
569. Original; drug dealer; sold drag that turned people into rage monsters
570. Comics; vigilante; Action Comics; alien who wears something with extra-dimensional properties
572. Original; student; had a birthday party in which her mother was attacked
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects
574. Original; asylum inmate; has drooling problem
575. Original; research assistant; tried to run tests on cast character
576. Original; some sort of special agent; hypnotized after being called in for performance review
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce
578. Original; pastor; lived in Odessa, Texas in 1925
579. Original; science centre owner; secretly worked for season main villain
580. Original; unrevealed, likely student if any; has alien for a pet
581. Original; gangster; skipped town to avoid main character
582. Comics but related to comics based characters; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society; sister of a comic book DA who's been mentioned but not yet seen
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car
585. Original; police officer; seen at a crime scene caused by two super-villains
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband
587. Original; high school music teacher; surname is a music term
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult
589. Real person; physicist; kidnapped by cast character to help solve a specific problem
590. Original; bounty hunter; tried to collect on a bounty on a main character
591. Original; police officer; arrested cast characters for disrespecting him and partner
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman
593. Original; army officer; led soldiers in capturing cast characters
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island
595. Original; nation's president; killed during alien invasion
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident
597. Original; secretary for major recurring character (season 1 of series)
598. Original; judge; precided over trail of main character's mother
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis
601. Original; unrevealed; childhood friend of cast character
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian
606. Original; criminal; serving a life sentence for two counts of murder
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash; can create box-like force fields
609. Original; scientist; alien with thorns on his forearms
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona
611. Original; mixed martial artist; affected by totem during tournament
612. Original; police officer; tried to force major character to testify against main character
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake
618. Original; money launderer; worked for crimelord in flashbacks
619. Original; unrevealed if any; vampire
620. Original; nation's President; took on role after predecessor forced to resign
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy
622. Comics; assassin; first appeared in own series; crew teamed with major villain
623. Original, though name might be a nod to two real life people; business founder, investment magnate, philanthropist, socialite; held a fundraising gala where she spokie with cast characters looking for her son
624. Original; unrevealed, likely student; cast character's first cousin once removed
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation
626. Original; crime lord (code name refers to another occupation that he doesn't actually have); took over part of town after an earthquake
627. Original; police officer; killed by cast character in self-defense
628. Original; cultist; part of a coven wishing for old deities to be worshipped
629. Original; asylum nurse; joked with villain (the latter in a cover identity)
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character
632. Original; accountant; attempt to retrieve money extorted from a mayor
633. Comics; security agent, police officer; Robin; murdered cast character's father
634. Original; unrevealed; has fragokinesis power
635. Original; unrevealed; kidnapped by legacy villain
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version
640. Original; special agent of sorts; awarded Agent of the Month
641. Original; unrevealed; father of cast character
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics; father of major character
643. Original; bus driver, criminal; stomach slashed by major villain
644. Original; receptionist; tried unsuccessfully to stop main character's arrival
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  
646. Original; unrevealed; gained powers in an experiment
647. Original; criminal; right-hand man for recurring villain
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainolus counterpart of a superhero
649. Real person; theatrical producer; oversaw major playwright's work
651. Original; councilman; ally of major villain
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future
653. Original; bartender; ex-girlfriend of main character
654. Original; unrevealed; was wife of season villain, the latter using an alias
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality
656. Original; doctor
657. Original; police officer
658. Original; reporter
659. Original; research scientist
660. Original; college student
661. Comics; unrevealed if any; Martian Manhunter
662. Comics; drug dealer; Green Arrow and Black Canary
663. Original; TV anchorman and news reporter
664. Comics (different real surname); student; Flashpoint
665. Original; editor-in-chief
666. Original; named after real person but not a true counterpart; criminal
667. Real person; astronaut
668. Original; drug harvester, deckhand
669. Original; unrevealed
670. Original; anchorwoman
671. Comics; criminal, orphanage head; All-American Comics
672. Comics; assassin; WildC.A.T.s
673. Original; bar owner
674. Original; unrevealed
675. Original; police officer
676. Original; criminal
677. Comics; astronomer, assassin; Crisis on Infinite Earths
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America
681. Comics; newspaper intern turned police detective; Showcase
682. Original; inmate
683. Original; unrevealed
684. Original; some sort of jailer (can't be more specific without revealing too much fo the answer)
685. Comics (possibly); police captain; possibly Vigilante
686. Real person; unrevealed, student if any, presumed subsequent novelist
687. Folklore; probably none; folklore of the Americas
688. Original; unrevealed
689. Original; music student graduate
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader
692. Original; executive staffer
693. Original; sorcereres cult member
694. Original; scientist
695. Real person; army lieutenant general
696. Original; night club owner
697. Original; executive employee
699. Original; news correspondent
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary
701. Original; army member
702. Comics; scientist; The Fury of Firestorm
703. Original; security agent, criminal
704. Original; scientist
705. Comics; criminal; possibly Green Arrow: Rebirth
706. Original; singer
708. Original; football player running back
709. Original; media employee
710. Original; scientist
712. Original; unrevealed
713. Original; director
714. Original; police officer
715. Real person; musician
716. Comics (indirectly); science based employee to the extent applicable; Action Comics
717. Original; scientist
718. Original; unrevealed
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans
720. Comics (indirectly); posed as lawyer; The Flash
721. Real person; federal agency Director
722. Original; criminal
723. Original; federal agent
724. Original; storage worker
725. Comics; terrorist financier; Young Justice
727. Comics; henchman; Action Comics
728. Original; mobster, mechanic, repair shop owner
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name)

 

Letter/number patterns added for remaining characters.

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba *******
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows ***** ******
370. Original; plantation and slave owner; fought zombie soldiers ****** *******
371. Original; judge; killed by someone whose trial she presided over *******  ******
372. Original; high school teacher; statutory rapist ******  *******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  ******
374. Original; cultist; escaped a raid on boss' lair initially  ******* /  *****
376. Original; weapons dealer; led a street gang  *****  *******
377. Original; firefighter; fire department including her is recurring  ****** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired ****  ********
379. Original; CEO; eyes were gouged out ****  ***********
380. Original; student if any; parents killed by assassin  ******  *****
381. Real person; artist; known for surreal art  ******** **** (one letter has accent)
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  *****
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** *****
384. Original; firefighter; got doused in turpentine ***** ** ** ****
385. Real person; newscaster; played by herself, though real person reports out of a different city  *****  ******
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ********  ********* *****'  ***** **-**** ( *****- ***##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  ****** /  *******  *******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character ****  ****** / ****  *****
389. Original; attorney; represented the main villain of the season  **********
390. Original; unrevealed; flirted with cast character **** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  ******  ******
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  ********  *********
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  *********  *******
394. Original; high school student; plays football and likes to drink *****  ********
396. Original; Italian restaurant owner; homophobic  **********
397. Original; criminal; blackmail and threatened the life of someone ****  *******
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  *****  ******
399. Original; pizza place owner; hates aliens  *******
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  ******  *******
401. Original; criminal; used an electrical blaster  ******** /  *******  *********
402. Original; student turned assassin; kidnapped by extreme sect  ******* / ****  *******
403. Original; government agent; worked with the main villain of the season  ******  ******
404. Original; field agent; removed a villain's stinger from their victim's body ********
406. Original; high school student; son of a recurring villain **** ****
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (*****-###)
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father; note: this character once had an Arrwoverse Wiki profile but it got deleted  ****** *** (*.*.)
409. Original; personal assistant; host of alien consciousness **** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *******
413. Real person; musician; performed at night club opening and was played by himself ***** ****
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain ****
415. Original; spy; proficient in air radio terminology **** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ******** ********* *****' ****** **-**** (*****-***##)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist ********* ******
418. Original; police detective; took part in getting innocents convicted *** ********
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** *******
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** *** ********
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *****
422. Original; crime syndicate member; stole liquid nitrogen ****** *****
423. Earlier character this continuity; unrevealed; read a poem about bread *.*. ***** (*****-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** *****
425. Original; unrevealed; uncle of cast character ****
427. Real person; presumed inventor and businessman going by real world version; replaced by robot ****** ******
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***** ***** (*****-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** ******
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers ****** ********* (********* ******)
431. Real person; jazz guitarist; killed by minotaur in erased timeline ****** *********
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality **** ******
433. Original; accountant; actions led to extortion, kidnapping, and murder ****** *******
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals ***********
435. Real person; Viking warlord; thought that toy from her future had divine messages **** ********
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother *******
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume ****** **** ****** ********** *******
438. Real person; nation's President; encouraged by someone to fire a missle at cuba **** *. *******
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles *** ******
440. Original; unrevealed; mother of cast characters ******* ******
441. Comics; mayor; Green Arrow; killed by rogue vigilante group ******
442. Original; high school student; family moved due to father's imprisonment ***** *******
443. Original; corportation founder, inventor; main villain of a season ******
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour ****** *********
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline ****** ******
446. Original; unrevaled; fostered alien child for a time **** ****
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together ******* ****  ***** ( *****- ***##)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes ******  *******
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother ***** (*-****)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain ***
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  ******
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  ******
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum ******* ******
454. Earlier character this continuity; unrevealed; appeared after solving an equation ********  ***** (*****- ***#)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth ***** ****
456. Original; prison warden; fired for misuse of prisoners ***** ****
457. Original; personal accountant; is a demon and possibly hasn't been to Earth ********
458. Real person; poet, playwright; heroes visited him to get a piece of a loom ******* ***********
459. Original; high school graduate; became pregnant with a time traveller's baby ***
460. Original; unrevealed; mother of a cast character ****** ***
461. Original; unrevealed; had an emotional affair in a VR world ********  *****
462. Original; pilot of sorts; was saved from time pirates by heroes *** ******
463. Apparently original, though related to real person; unrevealed; uncle of famous musician ******* *******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ********  *****'*  *****-*  *********** (has accent somewhere)
465. Real person; queen; revived long after being decapitated  *****  **********
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ******** **** (***- ******)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character *****
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *** ****
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *********  *****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  ****** / ****  ****** (*****- ***##)
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains  *******
473. Original; psychologist; treated a cast character ****
474. Original; judge; precided over trial of a cast character (but not main character)  ********
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  **** (*****-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  ****** / ****  ********
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  ****** (********  ********)
479. Original; criminal gang leader; used alien tech in crimes **** *****
480. Original; government agent; recurring ally of cast characters  ******* (*****-##)
481. Original; high school student when last seen; close friend of cast character during teen years *****
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.*.  ******
485. Comics; criminal; Robin Annual; could morph hands into blades ********** /  *******  *****
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain ****
487. Original; unrevealed; villager in an African nation  *********
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****** ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  ***** *******
490. Original; crime boss; killed by gaseous villain ****  *********
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  *****-*******
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  ***** *******
494. Original; slave turned spy; tasked with stealing battle plans from an enemy ***** *****
495. Original; engineer; super-villain tried to take him captive ****
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  *****-***## *********** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp ***** ******
498. Original; some sort of criminal boss; mother of cast character's children *****
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos **** ***** (*****)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money ***** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ***** *******
503. Comics (different first name); CEO; Batman; mother of main character **** ****
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century *****'* #### *************
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart ****
506. Comics; presumed criminal; Nightwing; helped stop a drone strike ******
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain  ****** ******
508. Real person; senator; betrayed his best friend ******
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season ********* ******
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character ****** *****
511. Comics; CEO; The Power Company; had nannite-created powers ****** /  **** ******
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. ******
513. Original; server; played Dungeons & Dragons with cast character *****
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ******
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** ******
518. Original; high school student; son of a police commissioner ****** ******
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** ****
520. Original; unrevealed; childhood bully of major villain ***** ********
521. Original; senator; initially had anti-alien views ******* *****
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth ***
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle *****
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue **** ******
527. Original; spy of sorts; impersonated cast character ***** ******* (**** *******)
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being *****
529. Original; unrevealed; grandmother of cast character ******
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero ****
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration ** ****
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact ********* /  ***** **** *****
534. Original; student, also vigilante in one future; legacy villain in erased future ****** /  ***** *******
535. Original; unrevealed, likely student if any; from a post-Soviet country *******
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **** ******* (*****)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator ***** ****** (***********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  ********
539. Original; investor; invested in an attempt to make a museum ****
540. Original; unrevealed; husband shot by card themed villain **** **********
541. Original; government agent; electrocuted underwater **** *****
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated ******* ******    
543. Original; psychologist; kidnapped by group run by villain wanting advice ******
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* ****** (*****-#)
545. Original; army leader; alien who helped try to take over the Earth *** *********
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ******
548. Original; being specific would reveal most of the answer, but some sort of mayor aide; affected by some sort of outbreak at City Hall ***** ** ***** ** ******** ****
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **** *******
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **** *****
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement ***** /  ****** *****
552. Original; housewife; wife of major villain ***** ********
553. Original; security agent; ex-husband of cast character *****
554. Original; government agent; hunted a villain who killed him *****
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements); if separate character, they share DNA of a major character mixed with an alien's **** ***** (*****)
556. Mythology; likely none; Greek myths; known to party at college fraternities ********
557. Original; high school student; ex-boyfriend of cast character **** *****
558. Original; likely student of any; son of a later superhero **** *********
559. Original; judge; let main character out on bail *. ********
560. Original; construction manager; helped build amusement park ***** *.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens ***** *****
562. Real person; pirate; brought back after death ***** ******
563. Original; child trafficker; kidnapped main character while latter still a kid ******* ****
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength *******
566. Original; police officer; arrested cast characters for disrespecting him and partner ******
567. Original; company vice president; helped foot bill for free medical event **** ******
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character ***** *****'* *****-* ************ (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters ***** *******
570. Comics; vigilante; Action Comics; alien who wears something with extra-dimensional properties ***
572. Original; student; had a birthday party in which her mother was attacked ***** *****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects ***** ***** / **** *******
574. Original; asylum inmate; has drooling problem *******
575. Original; research assistant; tried to run tests on cast character *****
576. Original; some sort of special agent; hypnotized after being called in for performance review ******
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** ******
578. Original; pastor; lived in Odessa, Texas in 1925 ******
579. Original; science centre owner; secretly worked for season main villain **** ******
580. Original; unrevealed, likely student if any; has alien for a pet ***** (*****'* *****)
581. Original; gangster; skipped town to avoid main character ****** ************
582. Comics but related to comics based characters; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society; sister of a comic book DA who's been mentioned but not yet seen ****** ****
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car *** ***
585. Original; police officer; seen at a crime scene caused by two super-villains ******
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ******
587. Original; high school music teacher; surname is a music term *****
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult ***** ******
589. Real person; physicist; kidnapped by cast character to help solve a specific problem *******
590. Original; bounty hunter; tried to collect on a bounty on a main character ********
591. Original; police officer; arrested cast characters for disrespecting him and partner *****
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters ******* *******
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island ****** **********
595. Original; nation's president; killed during alien invasion ********
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident ***** ******* (*****-#)
597. Original; secretary for major recurring character (season 1 of series) *******
598. Original; judge; precided over trail of main character's mother **********
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. ********'*  ******
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis *****
601. Original; unrevealed; childhood friend of cast character ***** ****
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character ***** ******* (******* *****)
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ******** /  ***** *********
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo *** / **** ******
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian ****** ******
606. Original; criminal; serving a life sentence for two counts of murder ***** ********
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** ****** (*****-#)
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash; can create box-like force fields ***** / ******* ******
609. Original; scientist; alien with thorns on his forearms ***** ****
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona **** ****  ****** a.k.a.  ****** #### /  *******  *****
611. Original; mixed martial artist; affected by totem during tournament *****  *****
612. Original; police officer; tried to force major character to testify against main character *.  *****
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *** **** /  *******  ******
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill **** *****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past ****** *******
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo **** **** (*****-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake ***** ******
618. Original; money launderer; worked for crimelord in flashbacks ***** ********
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign **** *****
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy ****** ********
622. Comics; assassin; first appeared in own series; crew teamed with major villain ******* / *****
623. Original, though name might be a nod to two real life people; business founder, investment magnate, philanthropist, socialite; held a fundraising gala where she spokie with cast characters looking for her son ******* ******
624. Original; unrevealed, likely student; cast character's first cousin once removed *****
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******* / **** ******
626. Original; crime lord (code name refers to another occupation that he doesn't actually have); took over part of town after an earthquake *** ***** /  ****** ****
627. Original; police officer; killed by cast character in self-defense *****
628. Original; cultist; part of a coven wishing for old deities to be worshipped *****
629. Original; asylum nurse; joked with villain (the latter in a cover identity) *****
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object ******** *******
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***** ***** (***********)
632. Original; accountant; attempt to retrieve money extorted from a mayor *** ********
633. Comics; security agent, police officer; Robin; murdered cast character's father ********* /  ****** ******
634. Original; unrevealed; has fragokinesis power ****** *****
635. Original; unrevealed; kidnapped by legacy villain ******* **********
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower **** *****
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *** *******
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version ***** ***** (*****)
640. Original; special agent of sorts; awarded Agent of the Month **** ******
641. Original; unrevealed; father of cast character **** ***
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics; father of major character ***-**
643. Original; bus driver, criminal; stomach slashed by major villain ****** *****
644. Original; receptionist; tried unsuccessfully to stop main character's arrival ****
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  **** *********
646. Original; unrevealed; gained powers in an experiment ****** ******
647. Original; criminal; right-hand man for recurring villain *****
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero ******** / ***-** (*****- ***##)
649. Real person; theatrical producer; oversaw major playwright's work ****** ********
651. Original; councilman; ally of major villain *******
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future *****
653. Original; bartender; ex-girlfriend of main character ******
654. Original; unrevealed; was wife of season villain, the latter using an alias **** ****
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality ****** *****
656. Original; doctor; assigned to care for main character ****** *********
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker *********
659. Original; research scientist; killed after procuring a map ***** *****
660. Original; college student; member of fraternity and convention attendee **** *****
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ******* *'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective **** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  ******* *****
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy ******** / ****** ******
665. Original; editor-in-chief; succeeded comics based character in role  ****** *******
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son **** *****
667. Real person; astronaut; major villain impersonated him **** *******
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** **********
669. Original; unrevealed; alien with fire powers ********* ********
670. Original; anchorwoman; often reports on main character's activities **** ******
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain ***** ****
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets *** *******
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** ****
674. Original; unrevealed; sibling of major villain ***** *****'* ******
675. Original; police officer; villain attached bomb to chest ******
676. Original; criminal; robbed blood banks for sustenance ***** *****
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. ***** /  ****** *****
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ****** ****** / **** ******
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality *****
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband **** ****-***** (*****-#)
682. Original; inmate; magical fugitive who loves to sing **** /  ********
683. Original; unrevealed; fan of major character's writing *****
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character ******** ****** *****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *****
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous ****** /  ******* ****** *****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm **********
688. Original; unrevealed; accused of being a witch **** *********
689. Original; music student graduate; attended University of Cincinnati ****** ******
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain ************
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge ******
692. Original; executive staffer; worked for villain's parents ****
693. Original; sorcereress cult member; mother of cast character ******* *****
694. Original; scientist; created super-soldiers with powers of specific villain **********
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion **********
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage ***** ****
699. Original; news correspondent; reported on a first episode incident ****
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary; uses a hostage to procure an item he wants by attaching a bomb collar to their necks ****** /  ******* ******
701. Original; army member; served under cast character ******
702. Comics; scientist; The Fury of Firestorm; was seen as a potential superhero but became a villain ******* /  ***** ******
703. Original; security agent, criminal; helped frame cast characters ******
704. Original; scientist; wife of major event character *****
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain ******
706. Original; singer; participated in reality TV competition ****** (one letter has accent)
708. Original; football player running back; testified against murderous brother ****** ******
709. Original; media employee; mind controlled into committing suicide *****
710. Original; scientist; wife of someone who was impersonated for a long time **** ******
712. Original; unrevealed; was seen as candidate for human trials ******* *******
713. Original; director; worked for major studio in 1937 ****** *******
714. Original; police officer; killed in an ambush *****
715. Real person; musician; strand of hair snagged by cast character ***** ******
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' ****** (******** ********)
717. Original; scientist; ally of main character's mother ******** ********** ************ (note: while not named in the show souce sources claim she's **. ****)
718. Original; unrevealed; version of another character, attended a World's Fair ***** ********
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans; attempted to assassinate a US President ********
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld ****** ****** (***********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents *. ***** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** *****
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information *******
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother *****
727. Comics; henchman; Action Comics; member of alien army who confronted another alien for making himself known to a government agency ***
728. Original; mobster, mechanic, repair shop owner; used as source of information by main character ***** ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  *****-****** /  *****  **********
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name); weapon can harness the power of atmokinesis ******** ***** /  ****** ******

Adding letters/number to answers as chosen by Random Number Generator. Letter (*) and number (#) patterns below. If there is a forward slash, the first name is the code name and the second name is the real name (for such characters I'll accept either name).  Not every number appears in this collage but every letter does. Obviously if a letter is revealed but not shown for a particular character, they don't have that letter in their name.

The first two letters, in order, are J & K. I did them both together as there are not a lot of either compared to some letters.

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba K******
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows ***** ******
370. Original; plantation and slave owner; fought zombie soldiers ****** *******
371. Original; judge; killed by someone whose trial she presided over *******  ******
372. Original; high school teacher; statutory rapist ******  *******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  ******
374. Original; cultist; escaped a raid on boss' lair initially  ******* /  *****
376. Original; weapons dealer; led a street gang  *****  *******
377. Original; firefighter; fire department including her is recurring  ****** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired ****  ********
379. Original; CEO; eyes were gouged out ****  ***********
380. Original; student if any; parents killed by assassin  ******  *****
381. Real person; artist; known for surreal art  ******** **** (one letter has accent)
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  *****
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** *****
384. Original; firefighter; got doused in turpentine ***** ** ** ****
385. Real person; newscaster; played by herself, though real person reports out of a different city  *****  ******
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ********  ********* *****'  ***** **-**** ( *****- ***##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  ****** /  *******  *******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character ****  ****** / ****  ***K*
389. Original; attorney; represented the main villain of the season  **********
390. Original; unrevealed; flirted with cast character **** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K*****  ******
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  ********  *********
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  *********  *******
394. Original; high school student; plays football and likes to drink *****  ********
396. Original; Italian restaurant owner; homophobic  **********
397. Original; criminal; blackmail and threatened the life of someone ****  *******
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  *****  ******
399. Original; pizza place owner; hates aliens  *******
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  ******  ******K
401. Original; criminal; used an electrical blaster  K******* /  *******  K********
402. Original; student turned assassin; kidnapped by extreme sect  J****** / ****  *******
403. Original; government agent; worked with the main villain of the season  ******  ******
404. Original; field agent; removed a villain's stinger from their victim's body ********
406. Original; high school student; son of a recurring villain **** ****
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (*****-###)
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father; note: this character once had an Arrwoverse Wiki profile but it got deleted  ****** *** (*.*.)
409. Original; personal assistant; host of alien consciousness **** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *******
413. Real person; musician; performed at night club opening and was played by himself ***** **K*
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain ****
415. Original; spy; proficient in air radio terminology **** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ******** ********* *****' ****** **-**** (*****-***##)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist ********* ******
418. Original; police detective; took part in getting innocents convicted *** ********
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** *******
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** *** ********
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *****
422. Original; crime syndicate member; stole liquid nitrogen ****** *****
423. Earlier character this continuity; unrevealed; read a poem about bread *.*. ***** (*****-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** *****
425. Original; unrevealed; uncle of cast character ****
427. Real person; presumed inventor and businessman going by real world version; replaced by robot ****** ******
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***** ***** (*****-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** ******
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers ****** ********* (********* *****K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**** *********
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** ******
433. Original; accountant; actions led to extortion, kidnapping, and murder ****** ***K***
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals ***********
435. Real person; Viking warlord; thought that toy from her future had divine messages **** ***K****
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother ******K
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume ****** **** ****** ********** *******
438. Real person; nation's President; encouraged by someone to fire a missle at cuba J*** *. K******
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles *** ******
440. Original; unrevealed; mother of cast characters ******* ******
441. Comics; mayor; Green Arrow; killed by rogue vigilante group ******
442. Original; high school student; family moved due to father's imprisonment ***** ***K***
443. Original; corportation founder, inventor; main villain of a season ******
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour ****** *********
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline ****** ******
446. Original; unrevaled; fostered alien child for a time **** ****
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together ******* ****  ***** ( *****- ***##)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes ******  *******
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother ***** (*-****)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain ***
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J*****
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  ******
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J****** ***K**
454. Earlier character this continuity; unrevealed; appeared after solving an equation ********  ***** (*****- ***#)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth ***** ***K
456. Original; prison warden; fired for misuse of prisoners ***** K***
457. Original; personal accountant; is a demon and possibly hasn't been to Earth ********
458. Real person; poet, playwright; heroes visited him to get a piece of a loom ******* ***K*******
459. Original; high school graduate; became pregnant with a time traveller's baby ***
460. Original; unrevealed; mother of a cast character ****** ***
461. Original; unrevealed; had an emotional affair in a VR world J*******  *****
462. Original; pilot of sorts; was saved from time pirates by heroes *** ******
463. Apparently original, though related to real person; unrevealed; uncle of famous musician ******* *******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ********  *****'*  ****K-*  *********** (has accent somewhere)
465. Real person; queen; revived long after being decapitated  *****  **********
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ******** K*** (***- ******)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character ***K*
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *** ****
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *********  *****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  ****** / ****  ****** (*****- ***##)
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains  *******
473. Original; psychologist; treated a cast character ***K
474. Original; judge; precided over trial of a cast character (but not main character)  ****K***
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  **** (*****-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  ****** / ****  ********
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  ****** (********  ********)
479. Original; criminal gang leader; used alien tech in crimes **** *****
480. Original; government agent; recurring ally of cast characters  ******* (*****-##)
481. Original; high school student when last seen; close friend of cast character during teen years J****
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.J.  ******
485. Comics; criminal; Robin Annual; could morph hands into blades ********** /  *******  *****
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain ****
487. Original; unrevealed; villager in an African nation  *********
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****** ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  ***** *******
490. Original; crime boss; killed by gaseous villain ****  *********
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  *****-*******
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  ***K* *******
494. Original; slave turned spy; tasked with stealing battle plans from an enemy ***** *****
495. Original; engineer; super-villain tried to take him captive ****
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  *****-***## *********** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp ***** ******
498. Original; some sort of criminal boss; mother of cast character's children K****
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos **** ***** (*****)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money J**** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ***** *******
503. Comics (different first name); CEO; Batman; mother of main character J*** J***
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century K****'* #### *************
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart J***
506. Comics; presumed criminal; Nightwing; helped stop a drone strike ******
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain  ****** ******
508. Real person; senator; betrayed his best friend ******
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season ********* ******
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character ****** *****
511. Comics; CEO; The Power Company; had nannite-created powers ****** /  J*** ******
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. ******
513. Original; server; played Dungeons & Dragons with cast character *****
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ******
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** ***K**
518. Original; high school student; son of a police commissioner ****** ******
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** ****
520. Original; unrevealed; childhood bully of major villain J**** ********
521. Original; senator; initially had anti-alien views ******* *****
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth ***
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle *****
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue **** ******
527. Original; spy of sorts; impersonated cast character ***** ******* (**** *******)
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being *****
529. Original; unrevealed; grandmother of cast character ******
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero J***
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration ** ****
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact ********* /  ***** **** *****
534. Original; student, also vigilante in one future; legacy villain in erased future ****** /  ***** *******
535. Original; unrevealed, likely student if any; from a post-Soviet country **K****
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **** ******* (*****)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator ***** K***** (***********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  ********
539. Original; investor; invested in an attempt to make a museum ****
540. Original; unrevealed; husband shot by card themed villain J*** **********
541. Original; government agent; electrocuted underwater **** *****
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated ******* ******    
543. Original; psychologist; kidnapped by group run by villain wanting advice ******
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* ****** (*****-#)
545. Original; army leader; alien who helped try to take over the Earth *** *********
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ******
548. Original; being specific would reveal most of the answer, but some sort of mayor aide; affected by some sort of outbreak at City Hall ***** ** ***** ** ******** ****
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **** ***K***
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **** *****
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement ***** /  ****** ****K
552. Original; housewife; wife of major villain ***** ***K****
553. Original; security agent; ex-husband of cast character *****
554. Original; government agent; hunted a villain who killed him *****
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements); if separate character, they share DNA of a major character mixed with an alien's **** ***** (*****)
556. Mythology; likely none; Greek myths; known to party at college fraternities ********
557. Original; high school student; ex-boyfriend of cast character **** *****
558. Original; likely student of any; son of a later superhero *K** *********
559. Original; judge; let main character out on bail *. ********
560. Original; construction manager; helped build amusement park **K** *.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens ***** *****
562. Real person; pirate; brought back after death ***** ******
563. Original; child trafficker; kidnapped main character while latter still a kid ******* ****
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K******
566. Original; police officer; arrested cast characters for disrespecting him and partner ******
567. Original; company vice president; helped foot bill for free medical event **** ******
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**** *****'* *****-* ************ (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters K**** *******
570. Comics; vigilante; Action Comics; alien who wears something with extra-dimensional properties ***
572. Original; student; had a birthday party in which her mother was attacked ***** *****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects ****K ***** / **** *******
574. Original; asylum inmate; has drooling problem *******
575. Original; research assistant; tried to run tests on cast character *****
576. Original; some sort of special agent; hypnotized after being called in for performance review ******
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** ******
578. Original; pastor; lived in Odessa, Texas in 1925 ******
579. Original; science centre owner; secretly worked for season main villain **** ******
580. Original; unrevealed, likely student if any; has alien for a pet ***** (***K*'* *****)
581. Original; gangster; skipped town to avoid main character ****** ****K******
582. Comics but related to comics based characters; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society; sister of a comic book DA who's been mentioned but not yet seen ****** ****
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car *** ***
585. Original; police officer; seen at a crime scene caused by two super-villains ******
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ******
587. Original; high school music teacher; surname is a music term *****
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult ***** ******
589. Real person; physicist; kidnapped by cast character to help solve a specific problem *******
590. Original; bounty hunter; tried to collect on a bounty on a main character ********
591. Original; police officer; arrested cast characters for disrespecting him and partner *****
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters **K**** **K****
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island ****** ******K***
595. Original; nation's president; killed during alien invasion ********
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident ***** ******* (*****-#)
597. Original; secretary for major recurring character (season 1 of series) *******
598. Original; judge; precided over trail of main character's mother **********
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. ********'*  ******
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis *****
601. Original; unrevealed; childhood friend of cast character ***** ****
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character ***** ******* (******* *****)
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ******** /  ***** *********
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo *** / **** ******
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian ***K** ******
606. Original; criminal; serving a life sentence for two counts of murder ***** ********
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** ****** (*****-#)
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash; can create box-like force fields ***** / ******* J*****
609. Original; scientist; alien with thorns on his forearms ***** ****
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona **** ****  ****** a.k.a.  ****** #### /  *******  *****
611. Original; mixed martial artist; affected by totem during tournament ****K  *****
612. Original; police officer; tried to force major character to testify against main character *.  *****
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *** **** /  *******  ******
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J*** *****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past ****** *******
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*** K*** (*****-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake ***** ***K**
618. Original; money launderer; worked for crimelord in flashbacks ***** *****K**
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign **** **K**
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy ****** ********
622. Comics; assassin; first appeared in own series; crew teamed with major villain ******* / *****
623. Original, though name might be a nod to two real life people; business founder, investment magnate, philanthropist, socialite; held a fundraising gala where she spokie with cast characters looking for her son ******* ***K**
624. Original; unrevealed, likely student; cast character's first cousin once removed *****
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******* / **** ******
626. Original; crime lord (code name refers to another occupation that he doesn't actually have); took over part of town after an earthquake *** ***** /  ****** ****
627. Original; police officer; killed by cast character in self-defense ****K
628. Original; cultist; part of a coven wishing for old deities to be worshipped *****
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J****
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object ******** *******
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***** ***** (***********)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *******K
633. Comics; security agent, police officer; Robin; murdered cast character's father ********* /  ****** ******
634. Original; unrevealed; has fragokinesis power ***K** *****
635. Original; unrevealed; kidnapped by legacy villain ******* **********
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower **** ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *** *******
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version ***** ***** (*****)
640. Original; special agent of sorts; awarded Agent of the Month **** ******
641. Original; unrevealed; father of cast character **** ***
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics; father of major character J**-**
643. Original; bus driver, criminal; stomach slashed by major villain K***** *****
644. Original; receptionist; tried unsuccessfully to stop main character's arrival J***
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  **** *********
646. Original; unrevealed; gained powers in an experiment J***** ******
647. Original; criminal; right-hand man for recurring villain ****K
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero ******** / K**-** (*****- ***##)
649. Real person; theatrical producer; oversaw major playwright's work ****** ********
651. Original; councilman; ally of major villain K*****
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K***
653. Original; bartender; ex-girlfriend of main character ******
654. Original; unrevealed; was wife of season villain, the latter using an alias **** K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality ****** *****
656. Original; doctor; assigned to care for main character ****** *********
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker ***K*****
659. Original; research scientist; killed after procuring a map ***** *****
660. Original; college student; member of fraternity and convention attendee K*** *****
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ******* J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective **** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  ******* *****
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy ****K*** / ****** ******
665. Original; editor-in-chief; succeeded comics based character in role  ****** *******
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** *****
667. Real person; astronaut; major villain impersonated him J*** *******
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** ******K***
669. Original; unrevealed; alien with fire powers ********* *****K**
670. Original; anchorwoman; often reports on main character's activities **** ******
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain ***** ****
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets *** *******
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** ****
674. Original; unrevealed; sibling of major villain ***** *****'* ******
675. Original; police officer; villain attached bomb to chest ******
676. Original; criminal; robbed blood banks for sustenance ***** *****
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. ***** /  K***** *****
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ****** J***** / **** ******
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality *****
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband **** ****-***** (*****-#)
682. Original; inmate; magical fugitive who loves to sing **** /  ********
683. Original; unrevealed; fan of major character's writing *****
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character ******** ****** *****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *****
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous ****** /  ******* ****** *****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm **********
688. Original; unrevealed; accused of being a witch J*** *********
689. Original; music student graduate; attended University of Cincinnati ****** ******
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain ************
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J*****
692. Original; executive staffer; worked for villain's parents ****
693. Original; sorcereress cult member; mother of cast character ******* *****
694. Original; scientist; created super-soldiers with powers of specific villain **********
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion **********
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage ***** K***
699. Original; news correspondent; reported on a first episode incident ***K
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary; uses a hostage to procure an item he wants by attaching a bomb collar to their necks ****** /  ******K ******
701. Original; army member; served under cast character ******
702. Comics; scientist; The Fury of Firestorm; was seen as a potential superhero but became a villain **K**** /  ***** ******
703. Original; security agent, criminal; helped frame cast characters ******
704. Original; scientist; wife of major event character *****
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain ******
706. Original; singer; participated in reality TV competition ****** (one letter has accent)
708. Original; football player running back; testified against murderous brother ****** ******
709. Original; media employee; mind controlled into committing suicide K****
710. Original; scientist; wife of someone who was impersonated for a long time **** ******
712. Original; unrevealed; was seen as candidate for human trials ******K *******
713. Original; director; worked for major studio in 1937 ****** *******
714. Original; police officer; killed in an ambush J****
715. Real person; musician; strand of hair snagged by cast character J**** J*****
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' ****** (******** ********)
717. Original; scientist; ally of main character's mother J******* ********** ************ (note: while not named in the show souce sources claim she's **. ****)
718. Original; unrevealed; version of another character, attended a World's Fair ***** ********    
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans; attempted to assassinate a US President ********
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld ****** ****** (***********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. ***** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** *****
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information ******K
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother *****
727. Comics; henchman; Action Comics; member of alien army who confronted another alien for making himself known to a government agency ***
728. Original; mobster, mechanic, repair shop owner; used as source of information by main character ***** ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  *****-****** /  *****  **********
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name); weapon can harness the power of atmokinesis ******** ***** /  J***** J**K**

 

Adding letters/number to answers as chosen by Random Number Generator. Letter (*) and number (#) patterns below. If there is a forward slash, the first name is the code name and the second name is the real name (for such characters I'll accept either name).  Not every number appears in this collage but every letter does. Obviously if a letter is revealed but not shown for a particular character, they don't have that letter in their name.

The next letter is T.

Letters found so far: GKLT

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba K**G***
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows ***** G*****
370. Original; plantation and slave owner; fought zombie soldiers ****** *******
371. Original; judge; killed by someone whose trial she presided over *******  ******
372. Original; high school teacher; statutory rapist T*****  *******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  ****G*
374. Original; cultist; escaped a raid on boss' lair initially  *****T* /  ****G
376. Original; weapons dealer; led a street gang  *****  ****TT*
377. Original; firefighter; fire department including her is recurring  T***** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired ****  ********
379. Original; CEO; eyes were gouged out ****  ***T*******
380. Original; student if any; parents killed by assassin  T*****  *****
381. Real person; artist; known for surreal art  ******** **** (one letter has accent)
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  *****
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** *****
384. Original; firefighter; got doused in turpentine ***** ** ** ****
385. Real person; newscaster; played by herself, though real person reports out of a different city  *****  ******
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ********  ********* *****'  ***T* **-**** ( ***T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**T** /  *******  G******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character ****  ****** / ****  ***K*
389. Original; attorney; represented the main villain of the season  **T*******
390. Original; unrevealed; flirted with cast character **** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K*****  ******
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  ********  *********
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G********  *******
394. Original; high school student; plays football and likes to drink *****  ******T*
396. Original; Italian restaurant owner; homophobic  **********
397. Original; criminal; blackmail and threatened the life of someone ****  *T*****
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  **T**  ******
399. Original; pizza place owner; hates aliens  *******
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*****  ******K
401. Original; criminal; used an electrical blaster  K******T /  *******  K**T*****
402. Original; student turned assassin; kidnapped by extreme sect  K****** / ****  **T****
403. Original; government agent; worked with the main villain of the season  J*****  ******
404. Original; field agent; removed a villain's stinger from their victim's body ***T****
406. Original; high school student; son of a recurring villain **** ****
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (***T*-###)
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father; note: this character once had an Arrwoverse Wiki profile but it got deleted  ****** *** (*.*.)
409. Original; personal assistant; host of alien consciousness **** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *******
413. Real person; musician; performed at night club opening and was played by himself *T*** **K*
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain ****
415. Original; spy; proficient in air radio terminology **** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ******** ********* *****' ****T* **-**** (***T*-T**##)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist ********* ***T**
418. Original; police detective; took part in getting innocents convicted *T* ********
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** *******
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** T** ********
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *T***
422. Original; crime syndicate member; stole liquid nitrogen ****** G*TT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.*. ***** (***T*-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** *****
425. Original; unrevealed; uncle of cast character ****
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** ******
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***** ****K (***T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** *****T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers *****T *****T*** (*****T*** ***T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**** ********T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** ***G**
433. Original; accountant; actions led to extortion, kidnapping, and murder ****** ***K***
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals ******T****
435. Real person; Viking warlord; thought that toy from her future had divine messages **** ***K****
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother T*****K
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume G*T*** **T* ****** *****T***T *******
438. Real person; nation's President; encouraged by someone to fire a missle at cuba J*** *. K******
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles *** ****T*
440. Original; unrevealed; mother of cast characters ******* T*****
441. Comics; mayor; Green Arrow; killed by rogue vigilante group **T***
442. Original; high school student; family moved due to father's imprisonment T*G** ***K***
443. Original; corportation founder, inventor; main villain of a season ******
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour ****** *********
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline ****** ******
446. Original; unrevaled; fostered alien child for a time **** ****
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together **T**** ****  ***** ( ***T*- T**##)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes ******  *******
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother ***** (*-****)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain ***
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J*****
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  ******
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J****TT ***K**
454. Earlier character this continuity; unrevealed; appeared after solving an equation ********  ***** (***T*- T**#)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth ***** ***K
456. Original; prison warden; fired for misuse of prisoners ***** K*T*
457. Original; personal accountant; is a demon and possibly hasn't been to Earth T*******
458. Real person; poet, playwright; heroes visited him to get a piece of a loom ******* ***K*******
459. Original; high school graduate; became pregnant with a time traveller's baby ***
460. Original; unrevealed; mother of a cast character ****** ***
461. Original; unrevealed; had an emotional affair in a VR world J*******  **T**
462. Original; pilot of sorts; was saved from time pirates by heroes *** ******
463. Apparently original, though related to real person; unrevealed; uncle of famous musician ******* *******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ******T*  ****K'*  ***T*-*  *****G**G** (has accent somewhere)
465. Real person; queen; revived long after being decapitated  *****  **T****TT*
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** K**T (***- ******)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character ***K*
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *** T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *********  *****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / ****  ****TT (***T*- T**##)
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains  G******
473. Original; psychologist; treated a cast character ***K
474. Original; judge; precided over trial of a cast character (but not main character)  ****K*TT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  ***G* (***T*-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  G***** / T***  ********
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  **T*** (********  ***T****)
479. Original; criminal gang leader; used alien tech in crimes ***T *****
480. Original; government agent; recurring ally of cast characters  ******* (***T*-##)
481. Original; high school student when last seen; close friend of cast character during teen years J****
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.J.  ******
485. Comics; criminal; Robin Annual; could morph hands into blades ********** /  *******  *****
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain ****
487. Original; unrevealed; villager in an African nation  *********
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****** ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  ***** *******
490. Original; crime boss; killed by gaseous villain ****  *********
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  *****-****T**
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  ***K* *******
494. Original; slave turned spy; tasked with stealing battle plans from an enemy ***** ***TT
495. Original; engineer; super-villain tried to take him captive ****
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  ***T*-T**## *****G**G** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp ***** ******
498. Original; some sort of criminal boss; mother of cast character's children K****
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos **** T**** (****T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money J**** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ***** ****T**
503. Comics (different first name); CEO; Batman; mother of main character J*** J*T
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century K****'* #### *********T***
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart J***
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T*****
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain  ****** **T***
508. Real person; senator; betrayed his best friend ***T**
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season ********* ******
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character ***T** *****
511. Comics; CEO; The Power Company; had nannite-created powers ****** /  J*** ******
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. **T***
513. Original; server; played Dungeons & Dragons with cast character *****
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ******
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** ***K**
518. Original; high school student; son of a police commissioner *T**** ******
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** ****
520. Original; unrevealed; childhood bully of major villain J**** ********
521. Original; senator; initially had anti-alien views ******* *****
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth ***
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle T****
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue **** ******
527. Original; spy of sorts; impersonated cast character ***T* ***T*** (**** *******)
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being *****
529. Original; unrevealed; grandmother of cast character *****T
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero J***
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration ** ****
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact ****T**** /  **TT* **** *****
534. Original; student, also vigilante in one future; legacy villain in erased future ****** /  G**** G******
535. Original; unrevealed, likely student if any; from a post-Soviet country **K****
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **T* ******* (****T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator ***** K***** (***********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *******T
539. Original; investor; invested in an attempt to make a museum ****
540. Original; unrevealed; husband shot by card themed villain J*** ******GT**
541. Original; government agent; electrocuted underwater **** ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated ******* ******    
543. Original; psychologist; kidnapped by group run by villain wanting advice ******
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* ****** (***T*-#)
545. Original; army leader; alien who helped try to take over the Earth T** *********
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ******
548. Original; being specific would reveal most of the answer, but some sort of mayor aide; affected by some sort of outbreak at City Hall ***** ** *T*** ** **T***** **T*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **** ***K*TT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **** ****T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement ***** /  ****** ****K
552. Original; housewife; wife of major villain ***** ***K****
553. Original; security agent; ex-husband of cast character T****
554. Original; government agent; hunted a villain who killed him T***G
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements); if separate character, they share DNA of a major character mixed with an alien's **** ***** (*****)
556. Mythology; likely none; Greek myths; known to party at college fraternities ********
557. Original; high school student; ex-boyfriend of cast character **** ***T*
558. Original; likely student of any; son of a later superhero *K** *********
559. Original; judge; let main character out on bail *. **G*****
560. Original; construction manager; helped build amusement park **K** T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens ***** *****
562. Real person; pirate; brought back after death ****K ******
563. Original; child trafficker; kidnapped main character while latter still a kid ******* ****
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K******
566. Original; police officer; arrested cast characters for disrespecting him and partner ******
567. Original; company vice president; helped foot bill for free medical event **** ******
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**** *****'* ***T*-* ******G**G** (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters K**** *******
570. Comics; vigilante; Action Comics; alien who wears something with extra-dimensional properties ***
572. Original; student; had a birthday party in which her mother was attacked ***** *****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects ****K ***** / **** ****T**
574. Original; asylum inmate; has drooling problem *******
575. Original; research assistant; tried to run tests on cast character *****
576. Original; some sort of special agent; hypnotized after being called in for performance review ******
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** ******
578. Original; pastor; lived in Odessa, Texas in 1925 ******
579. Original; science centre owner; secretly worked for season main villain ***G ******
580. Original; unrevealed, likely student if any; has alien for a pet ***** (***K*'* *****)
581. Original; gangster; skipped town to avoid main character ****** *T**K******
582. Comics but related to comics based characters; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society; sister of a comic book DA who's been mentioned but not yet seen ****** ***T
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car *** **G
585. Original; police officer; seen at a crime scene caused by two super-villains G*****
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ******
587. Original; high school music teacher; surname is a music term *****
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** ******
589. Real person; physicist; kidnapped by cast character to help solve a specific problem *******
590. Original; bounty hunter; tried to collect on a bounty on a main character ********
591. Original; police officer; arrested cast characters for disrespecting him and partner ***T*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters **K**** **K****
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T***** ******KT**
595. Original; nation's president; killed during alien invasion T*******
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident ***TT ******* (***T*-#)
597. Original; secretary for major recurring character (season 1 of series) *******
598. Original; judge; precided over trail of main character's mother **********
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. ********'*  **T***
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis **T**
601. Original; unrevealed; childhood friend of cast character ***** ****
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character ***T* ***T*** (******* *****)
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ******** /  ***** *********
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T** / **** ******
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian ***K** T*****
606. Original; criminal; serving a life sentence for two counts of murder ***** T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** ****TT (***T*-#)
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash; can create box-like force fields ****K / ******* J*****
609. Original; scientist; alien with thorns on his forearms ***** ****
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** **T*  ****** a.k.a.  ****T* #### /  *T*****  *****
611. Original; mixed martial artist; affected by totem during tournament ****K  *****
612. Original; police officer; tried to force major character to testify against main character *.  *****
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *** **** /  *******  **G***
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J*** *****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past ****** *******
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*T* K*** (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake ***** ***K**
618. Original; money launderer; worked for crimelord in flashbacks ***T* *****K**
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign **** **K**
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy ***T** ********
622. Comics; assassin; first appeared in own series; crew teamed with major villain ******** / *****
623. Original, though name might be a nod to two real life people; business founder, investment magnate, philanthropist, socialite; held a fundraising gala where she spokie with cast characters looking for her son T****** ***K**
624. Original; unrevealed, likely student; cast character's first cousin once removed *****
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******T / **** ******
626. Original; crime lord (code name refers to another occupation that he doesn't actually have); took over part of town after an earthquake T** ***** /  ****** ****
627. Original; police officer; killed by cast character in self-defense ****K
628. Original; cultist; part of a coven wishing for old deities to be worshipped *****
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J***T
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object *****T** *******
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***** ***G* (***********)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *******K
633. Comics; security agent, police officer; Robin; murdered cast character's father **T****** /  ****** ******
634. Original; unrevealed; has fragokinesis power ***K** *****
635. Original; unrevealed; kidnapped by legacy villain ***T*** **T*******
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower G*** ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *** *******
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** ***** (****T)
640. Original; special agent of sorts; awarded Agent of the Month **** ******
641. Original; unrevealed; father of cast character **** ***
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics; father of major character J**-**
643. Original; bus driver, criminal; stomach slashed by major villain K***** *****
644. Original; receptionist; tried unsuccessfully to stop main character's arrival J***
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  **** ******T**
646. Original; unrevealed; gained powers in an experiment J***** T*****
647. Original; criminal; right-hand man for recurring villain ****K
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero ******** / K**-** (***T*- T**##)
649. Real person; theatrical producer; oversaw major playwright's work ****** ********
651. Original; councilman; ally of major villain K*****
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K***
653. Original; bartender; ex-girlfriend of main character ***G**
654. Original; unrevealed; was wife of season villain, the latter using an alias **** K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality **TT** *****
656. Original; doctor; assigned to care for main character ****** *****G***
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker ***K*****
659. Original; research scientist; killed after procuring a map ***** **G***
660. Original; college student; member of fraternity and convention attendee K*** ****K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ******* J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective **** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  *****TT *****
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy ****K**T / ****** G*****
665. Original; editor-in-chief; succeeded comics based character in role  ****** *******
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** *****
667. Real person; astronaut; major villain impersonated him J*** ***G**T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** ******KT**
669. Original; unrevealed; alien with fire powers ********* *TT**K**
670. Original; anchorwoman; often reports on main character's activities **** ****TT
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain ***** G***
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets T** ***G***
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** G*T*
674. Original; unrevealed; sibling of major villain ***** *****'* ***T**
675. Original; police officer; villain attached bomb to chest ******
676. Original; criminal; robbed blood banks for sustenance ***** ***T*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. ****T /  K***** *****
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***T** J***** / "**** ******"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality *****
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband **** ***T-***** (***T*-#)
682. Original; inmate; magical fugitive who loves to sing *G** /  ********
683. Original; unrevealed; fan of major character's writing *****
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character ******T* ****** G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *T***
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous ***T** /  ******T G***G* *****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm **********
688. Original; unrevealed; accused of being a witch J*** ***T*****
689. Original; music student graduate; attended University of Cincinnati ****T* ******
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G**T***
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J*****
692. Original; executive staffer; worked for villain's parents **T*
693. Original; sorcereress cult member; mother of cast character **T**** **G**
694. Original; scientist; created super-soldiers with powers of specific villain **T****T**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion **********
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage **T** K***
699. Original; news correspondent; reported on a first episode incident ***K
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary; uses a hostage to procure an item he wants by attaching a bomb collar to their necks ***G** /  ******K ***T**
701. Original; army member; served under cast character **T***
702. Comics; scientist; The Fury of Firestorm; was seen as a potential superhero but became a villain T*K***K /  ***** ****TT
703. Original; security agent, criminal; helped frame cast characters ******
704. Original; scientist; wife of major event character *****
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain ******
706. Original; singer; participated in reality TV competition ****** (one letter has accent)
708. Original; football player running back; testified against murderous brother ****** T*****
709. Original; media employee; mind controlled into committing suicide K****
710. Original; scientist; wife of someone who was impersonated for a long time T*** ***G**
712. Original; unrevealed; was seen as candidate for human trials ******K *******
713. Original; director; worked for major studio in 1937 ****** *******
714. Original; police officer; killed in an ambush J****
715. Real person; musician; strand of hair snagged by cast character J**** J*****
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' **T*** (******** ***T****)
717. Original; scientist; ally of main character's mother J*T***** *****T**** ****T******T (note: while not named in the show souce sources claim she's **. T***)
718. Original; unrevealed; version of another character, attended a World's Fair ***** ********    
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans; attempted to assassinate a US President ********
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld ****** ****** (***********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. **G** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** *****
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information ***G**K
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***T*
727. Comics; henchman; Action Comics; member of alien army who confronted another alien for making himself known to a government agency G**
728. Original; mobster, mechanic, repair shop owner; used as source of information by main character ***** ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  *****-****** /  *****  ******GT**
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name); weapon can harness the power of atmokinesis ****T*** ***T* /  J***** J**K**

 

Adding letters/number to answers as chosen by Random Number Generator. Letter (*) and number (#) patterns below. If there is a forward slash, the first name is the code name and the second name is the real name (for such characters I'll accept either name).  Not every number appears in this collage but every letter does. Obviously if a letter is revealed but not shown for a particular character, they don't have that letter in their name.

The next letter is C.

Letters found so far: CGKLT

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba K**G***
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows ***** G*****
370. Original; plantation and slave owner; fought zombie soldiers ****** C******
371. Original; judge; killed by someone whose trial she presided over *******  ******
372. Original; high school teacher; statutory rapist T*****  *******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  ****G*
374. Original; cultist; escaped a raid on boss' lair initially  *C***T* /  C***G
376. Original; weapons dealer; led a street gang  *****  ****TT*
377. Original; firefighter; fire department including her is recurring  T***** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired ****  C*******
379. Original; CEO; eyes were gouged out ****  C**T*******
380. Original; student if any; parents killed by assassin  T*****  *****
381. Real person; artist; known for surreal art  ******** **** (one letter has accent)
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  *****
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** *****
384. Original; firefighter; got doused in turpentine ***** ** ** ****
385. Real person; newscaster; played by herself, though real person reports out of a different city  *****  ******
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ********  ********* *****'  ***T* **-**** ( ***T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**T** /  *******  G******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character ****  ****** / ****  ***K*
389. Original; attorney; represented the main villain of the season  **T*******
390. Original; unrevealed; flirted with cast character **** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K*****  ***C**
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  ********  *********
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G********  *******
394. Original; high school student; plays football and likes to drink C****  ******T*
396. Original; Italian restaurant owner; homophobic  **********
397. Original; criminal; blackmail and threatened the life of someone C***  *T*****
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  **T**  ******
399. Original; pizza place owner; hates aliens  *******
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*****  ******K
401. Original; criminal; used an electrical blaster  K******T /  *******  K**T*****
402. Original; student turned assassin; kidnapped by extreme sect  T****** / ****  **T****
403. Original; government agent; worked with the main villain of the season  J*****  ******
404. Original; field agent; removed a villain's stinger from their victim's body ***T****
406. Original; high school student; son of a recurring villain **** ****
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (***T*-###)
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father; note: this character once had an Arrwoverse Wiki profile but it got deleted  **C*** *** (*.*.)
409. Original; personal assistant; host of alien consciousness **** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *******
413. Real person; musician; performed at night club opening and was played by himself *T*** **K*
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain ****
415. Original; spy; proficient in air radio terminology **** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ******** ********* *****' ****T* **-**** (***T*-T**##)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C******** ***T**
418. Original; police detective; took part in getting innocents convicted *T* ********
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** *******
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** T** ***C****
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *T***
422. Original; crime syndicate member; stole liquid nitrogen ****** G*TT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.*. ***** (***T*-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** C****
425. Original; unrevealed; uncle of cast character ****
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** ******
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***** ***CK (***T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** *****T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers *****T *****T*** (*****T*** ***T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**** ********T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** ***G**
433. Original; accountant; actions led to extortion, kidnapping, and murder ****** **CK***
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals **C***T****
435. Real person; Viking warlord; thought that toy from her future had divine messages **** ***K****
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother T****CK
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume G*T*** C*T* ****C* *****T***T ****C**
438. Real person; nation's President; encouraged by someone to fire a missle at cuba J*** *. K******
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C** ****T*
440. Original; unrevealed; mother of cast characters ******* T*****
441. Comics; mayor; Green Arrow; killed by rogue vigilante group **T***
442. Original; high school student; family moved due to father's imprisonment T*G** **CK***
443. Original; corportation founder, inventor; main villain of a season ******
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour *C**** *********
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline ****** ******
446. Original; unrevaled; fostered alien child for a time **** ****
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together **T**** ****  ***** ( ***T*- T**##)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes **C***  **C****
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother ***** (*-C***)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain ***
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J*****
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  ******
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J****TT ***K**
454. Earlier character this continuity; unrevealed; appeared after solving an equation ********  ***** (***T*- T**#)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth ***** ***K
456. Original; prison warden; fired for misuse of prisoners ***** K*T*
457. Original; personal accountant; is a demon and possibly hasn't been to Earth T*******
458. Real person; poet, playwright; heroes visited him to get a piece of a loom ******* ***K*******
459. Original; high school graduate; became pregnant with a time traveller's baby ***
460. Original; unrevealed; mother of a cast character ****** ***
461. Original; unrevealed; had an emotional affair in a VR world J*******  **T**
462. Original; pilot of sorts; was saved from time pirates by heroes *** ******
463. Apparently original, though related to real person; unrevealed; uncle of famous musician **C**** *******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ****C*T*  ****K'*  ***T*-*  *****G**G** (has accent somewhere)
465. Real person; queen; revived long after being decapitated  *****  **T****TT*
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** K**T (***- C*****)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character ***K*
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *** T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *********  *****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / ****  *C**TT (***T*- T**##)
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains  G******
473. Original; psychologist; treated a cast character ***K
474. Original; judge; precided over trial of a cast character (but not main character)  ***CK*TT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  ***G* (***T*-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  G***** / T***  ********
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  **T*** (********  ***T****)
479. Original; criminal gang leader; used alien tech in crimes C**T *****
480. Original; government agent; recurring ally of cast characters  ******* (***T*-##)
481. Original; high school student when last seen; close friend of cast character during teen years J****
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.J.  ******
485. Comics; criminal; Robin Annual; could morph hands into blades ********** /  *******  *****
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain ****
487. Original; unrevealed; villager in an African nation  *********
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****** ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  ***** **C****
490. Original; crime boss; killed by gaseous villain ****  *********
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  *****-****T**
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  **CK* *******
494. Original; slave turned spy; tasked with stealing battle plans from an enemy ***** *C*TT
495. Original; engineer; super-villain tried to take him captive C***
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  ***T*-T**## *****G**G** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp ***** C*****
498. Original; some sort of criminal boss; mother of cast character's children K****
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos **** T**** (****T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money J**** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ****C ****T**
503. Comics (different first name); CEO; Batman; mother of main character J*** J*T
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century K****'* #### ****C****T***
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart J***
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T*****
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain  ****** **T***
508. Real person; senator; betrayed his best friend ***T**
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season C******** ******
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character ***T** *****
511. Comics; CEO; The Power Company; had nannite-created powers ****** /  J*** ******
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. **T***
513. Original; server; played Dungeons & Dragons with cast character ***C*
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ******
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** ***K**
518. Original; high school student; son of a police commissioner *T**** ******
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** C***
520. Original; unrevealed; childhood bully of major villain J**** ******C*
521. Original; senator; initially had anti-alien views ******* C****
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth ***
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle T****
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue **** ******
527. Original; spy of sorts; impersonated cast character ***T* ***T*** ("**** *******")
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being *****
529. Original; unrevealed; grandmother of cast character *****T
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero J***
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration ** C***
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact ****T**** /  **TT* **** ***C*
534. Original; student, also vigilante in one future; legacy villain in erased future C*C*** /  G**** G******
535. Original; unrevealed, likely student if any; from a post-Soviet country **K****
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **T* ******* (****T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator ***** K***** (***********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *******T
539. Original; investor; invested in an attempt to make a museum ****
540. Original; unrevealed; husband shot by card themed villain J*** ******GT**
541. Original; government agent; electrocuted underwater **** ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C****** ******    
543. Original; psychologist; kidnapped by group run by villain wanting advice ******
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* ****** (***T*-#)
545. Original; army leader; alien who helped try to take over the Earth T** C********
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ******
548. Original; being specific would reveal most of the answer, but some sort of mayor aide; affected by some sort of outbreak at City Hall C**** ** *T*** ** **T***** C*T*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **** **CK*TT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **** ****T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement ***C* /  ****** ****K
552. Original; housewife; wife of major villain ***** **CK****
553. Original; security agent; ex-husband of cast character T****
554. Original; government agent; hunted a villain who killed him T***G
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements); if separate character, they share DNA of a major character mixed with an alien's **** ***** (C****)
556. Mythology; likely none; Greek myths; known to party at college fraternities ********
557. Original; high school student; ex-boyfriend of cast character **** ***T*
558. Original; likely student of any; son of a later superhero *K** *********
559. Original; judge; let main character out on bail C. **G*****
560. Original; construction manager; helped build amusement park **K** T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens ***** *****
562. Real person; pirate; brought back after death ***CK C*****
563. Original; child trafficker; kidnapped main character while latter still a kid C****** ****
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K******
566. Original; police officer; arrested cast characters for disrespecting him and partner ******
567. Original; company vice president; helped foot bill for free medical event **** ******
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**** *****'* ***T*-* ******G**G** (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters K**** *******
570. Comics; vigilante; Action Comics; alien who wears something with extra-dimensional properties ***
572. Original; student; had a birthday party in which her mother was attacked ***** *****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects ***CK ***** / **** C***T**
574. Original; asylum inmate; has drooling problem *******
575. Original; research assistant; tried to run tests on cast character *****
576. Original; some sort of special agent; hypnotized after being called in for performance review ******
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** ******
578. Original; pastor; lived in Odessa, Texas in 1925 ******
579. Original; science centre owner; secretly worked for season main villain ***G ******
580. Original; unrevealed, likely student if any; has alien for a pet ***** (***K*'* *****)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK******
582. Comics but related to comics based characters; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society; sister of a comic book DA who's been mentioned but not yet seen ****** ***T
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car *** **G
585. Original; police officer; seen at a crime scene caused by two super-villains G******
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ******
587. Original; high school music teacher; surname is a music term *****
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** ******
589. Real person; physicist; kidnapped by cast character to help solve a specific problem *******
590. Original; bounty hunter; tried to collect on a bounty on a main character ********
591. Original; police officer; arrested cast characters for disrespecting him and partner ***T*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters **K**** **K****
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T***** ******KT**
595. Original; nation's president; killed during alien invasion T*******
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident ***TT C****** (***T*-#)
597. Original; secretary for major recurring character (season 1 of series) *******
598. Original; judge; precided over trail of main character's mother **********
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. ********'*  **T***
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis **T**
601. Original; unrevealed; childhood friend of cast character ***** ****
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character ***T* ***T*** ("******* C****")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ******** /  ***** *********
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T** / **** ******
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian ***K** T*****
606. Original; criminal; serving a life sentence for two counts of murder ***** T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** ****TT (***T*-#)
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash; can create box-like force fields ***CK / ******* J*****
609. Original; scientist; alien with thorns on his forearms ***** ****
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** C*T*  ****** a.k.a.  ****T* #### /  *T*****  *****
611. Original; mixed martial artist; affected by totem during tournament ****K  C****
612. Original; police officer; tried to force major character to testify against main character *.  *****
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *** **** /  *******  **G***
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J*** *****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past ****C* C******
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*T* K*** (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake ***** ***K**
618. Original; money launderer; worked for crimelord in flashbacks ***T* *****K**
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign **** **K**
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy ***T** **C****C
622. Comics; assassin; first appeared in own series; crew teamed with major villain *****C** / *****
623. Original, though name might be a nod to two real life people; business founder, investment magnate, philanthropist, socialite; held a fundraising gala where she spokie with cast characters looking for her son T****** ***K**
624. Original; unrevealed, likely student; cast character's first cousin once removed C****
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******T / **** ******
626. Original; crime lord (code name refers to another occupation that he doesn't actually have); took over part of town after an earthquake T** ***** /  ****** ****
627. Original; police officer; killed by cast character in self-defense ***CK
628. Original; cultist; part of a coven wishing for old deities to be worshipped *****
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J***T
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object *****T** C******
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***** ***G* (***********)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *******K
633. Comics; security agent, police officer; Robin; murdered cast character's father **T****** /  ****** ******
634. Original; unrevealed; has fragokinesis power ***K** *****
635. Original; unrevealed; kidnapped by legacy villain ***T*** **TC******
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower G*** ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *** *******
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** ***** (****T)
640. Original; special agent of sorts; awarded Agent of the Month **** *C****
641. Original; unrevealed; father of cast character **** ***
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics; father of major character J**-**
643. Original; bus driver, criminal; stomach slashed by major villain K***** *****
644. Original; receptionist; tried unsuccessfully to stop main character's arrival J***
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  **** C*****T**
646. Original; unrevealed; gained powers in an experiment J***** T*****
647. Original; criminal; right-hand man for recurring villain ***CK
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero ******** / K**-** (***T*- T**##)
649. Real person; theatrical producer; oversaw major playwright's work ****** ********
651. Original; councilman; ally of major villain K*****
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K***
653. Original; bartender; ex-girlfriend of main character ***G**
654. Original; unrevealed; was wife of season villain, the latter using an alias **** K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TT** *****
656. Original; doctor; assigned to care for main character ****** *****G***
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CK*****
659. Original; research scientist; killed after procuring a map ***** **G***
660. Original; college student; member of fraternity and convention attendee K*** ****K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ******* J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective **** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  *****TT *****
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy ***CK**T / ****** G*****
665. Original; editor-in-chief; succeeded comics based character in role  ****** *******
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** *****
667. Real person; astronaut; major villain impersonated him J*** ***G**T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** ******KT**
669. Original; unrevealed; alien with fire powers ********* *TT**K**
670. Original; anchorwoman; often reports on main character's activities **** ****TT
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain C**** G***
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets T** ***G***
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** G*T*
674. Original; unrevealed; sibling of major villain ***** *****'* ***T**
675. Original; police officer; villain attached bomb to chest ******
676. Original; criminal; robbed blood banks for sustenance ***** ***T*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. ****T /  K***** *****
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***T** J***** / "C*** ******"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality *****
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband **** ***T-***** (***T*-#)
682. Original; inmate; magical fugitive who loves to sing *G** /  *******C
683. Original; unrevealed; fan of major character's writing *****
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character ******T* ****C* G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *T***
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous ***T** /  ******T G***G* *****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C****C****
688. Original; unrevealed; accused of being a witch J*** ***T*****
689. Original; music student graduate; attended University of Cincinnati ****T* ******
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G**T***
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J*****
692. Original; executive staffer; worked for villain's parents **T*
693. Original; sorcereress cult member; mother of cast character **T**** **G**
694. Original; scientist; created super-soldiers with powers of specific villain **T***CT**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion C*********
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage **T** K***
699. Original; news correspondent; reported on a first episode incident **CK
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary; uses a hostage to procure an item he wants by attaching a bomb collar to their necks ***G** /  *****CK ***T**
701. Original; army member; served under cast character **T***
702. Comics; scientist; The Fury of Firestorm; was seen as a potential superhero but became a villain T*K***K /  ***** ****TT
703. Original; security agent, criminal; helped frame cast characters ******
704. Original; scientist; wife of major event character *****
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain ******
706. Original; singer; participated in reality TV competition ***C** (one letter has accent)
708. Original; football player running back; testified against murderous brother ****** T*****
709. Original; media employee; mind controlled into committing suicide K****
710. Original; scientist; wife of someone who was impersonated for a long time T*** ***G**
712. Original; unrevealed; was seen as candidate for human trials ******K *******
713. Original; director; worked for major studio in 1937 ****** C******
714. Original; police officer; killed in an ambush J****
715. Real person; musician; strand of hair snagged by cast character J**** J*****
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' **T*** (******** ***T****)
717. Original; scientist; ally of main character's mother J*T***** *****T**** ****T******T (note: while not named in the show souce sources claim she's **. T***)
718. Original; unrevealed; version of another character, attended a World's Fair ***T* ********    
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans; attempted to assassinate a US President *C**C***
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld C*C*** ****** (***********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. **G** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** *****
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information ***G*CK
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***T*
727. Comics; henchman; Action Comics; member of alien army who confronted another alien for making himself known to a government agency G**
728. Original; mobster, mechanic, repair shop owner; used as source of information by main character ***** ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C****-****** /  *****  ******GT**
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name); weapon can harness the power of atmokinesis ****T*** ***T* /  J***** J*CK**

 

Adding letters/number to answers as chosen by Random Number Generator. Letter (*) and number (#) patterns below. If there is a forward slash, the first name is the code name and the second name is the real name (for such characters I'll accept either name).  Not every number appears in this collage but every letter does. Obviously if a letter is revealed but not shown for a particular character, they don't have that letter in their name.

Adding quite a number of minimal findings results this time around. Three numbers in a row (7, 0, 8) and then the letter B. As before, 0 and O are treated separately.

Letters/numbers found so far: BCGJKT780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba K**G***
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows ***C* G*****
370. Original; plantation and slave owner; fought zombie soldiers ****** C******
371. Original; judge; killed by someone whose trial she presided over T******  ******
372. Original; high school teacher; statutory rapist ******  B******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  B***G*
374. Original; cultist; escaped a raid on boss' lair initially  *C***T* /  C***G
376. Original; weapons dealer; led a street gang  B****  ****TT*
377. Original; firefighter; fire department including her is recurring  T***** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired B***  C*******
379. Original; CEO; eyes were gouged out ****  C**T*******
380. Original; student if any; parents killed by assassin  T*****  *****
381. Real person; artist; known for surreal art  ******** **** (one letter has accent)
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  *****
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** *****
384. Original; firefighter; got doused in turpentine ***** ** ** ****
385. Real person; newscaster; played by herself, though real person reports out of a different city  ***** *G****
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ********  ********* *****'  ***T* **-**** ( ***T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**T** /  *******  G******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character ****  ****** / ****  B**K*
389. Original; attorney; represented the main villain of the season  **T*******
390. Original; unrevealed; flirted with cast character **** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K*****  ***C**
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  ********  *********
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G********  B******
394. Original; high school student; plays football and likes to drink C****  ******T*
396. Original; Italian restaurant owner; homophobic  **********
397. Original; criminal; blackmail and threatened the life of someone C***  *T*****
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  **TC*  ******
399. Original; pizza place owner; hates aliens  *******
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*****  *****CK
401. Original; criminal; used an electrical blaster  K******T /  *******  K**T*****
402. Original; student turned assassin; kidnapped by extreme sect  T***B** / ****  **T****
403. Original; government agent; worked with the main villain of the season  J*****  ******
404. Original; field agent; removed a villain's stinger from their victim's body ***T****
406. Original; high school student; son of a recurring villain **** ****
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (***T*-7##)
408. Comics (indirectly); inapplicable; Batman; programmed with personality of user's father; note: this character once had an Arrwoverse Wiki profile but it got deleted  **C*** *** (*.*.)
409. Original; personal assistant; host of alien consciousness **** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *******
413. Real person; musician; performed at night club opening and was played by himself *T*** **K*
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain B***
415. Original; spy; proficient in air radio terminology **** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ******** ********* *****' ****T* **-**** (***T*-T**#0)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C******** ***T**
418. Original; police detective; took part in getting innocents convicted *T* ********
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** *******
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** T** ***C****
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *T***
422. Original; crime syndicate member; stole liquid nitrogen ***G** G*TT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.*. ***** (***T*-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** C****
425. Original; unrevealed; uncle of cast character ****
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** ******
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***** ***CK (***T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** *****T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers *****T *****T*** (*****T*** ***T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* ********T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** ***G**
433. Original; accountant; actions led to extortion, kidnapping, and murder ****** B*CK***
434. Comics (though this version's real name unrevealed); handmaiden, etc.; Strange Adventures; believed by major character to have been banned from meddling with mortals **C***T****
435. Real person; Viking warlord; thought that toy from her future had divine messages **** ***K****
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother T****CK
437. Original; police officer; watched over a trio of superheroes in their non-super identities, then later a group led by another superhero, also out of costume G*T*** C*T* ****C* *****T***T ****C**
438. Real person; nation's President; encouraged by someone to fire a missle at cuba J*** *. K******
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C** ****T*
440. Original; unrevealed; mother of cast characters ******* T*****
441. Comics; mayor; Green Arrow; killed by rogue vigilante group **T***
442. Original; high school student; family moved due to father's imprisonment T*G** **CK***
443. Original; corportation founder, inventor; main villain of a season B*****
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour *C**** *********
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline ****** ******
446. Original; unrevaled; fostered alien child for a time **** ****
447. Comics (slightly different name); high school student; Steel; from another Earth and has no counterpart on main Earth due to counterpart parents never getting together **T**** ****  ***** ( ***T*- T**##)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes**CT** **C**T*
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother ***** (*-C***)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain ***
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J*****
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  ******
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J****TT ***K**
454. Earlier character this continuity; unrevealed; appeared after solving an equation ********  ***** (***T*- T**#)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth ***** ***K
456. Original; prison warden; fired for misuse of prisoners ***TT K*T*
457. Original; personal accountant; is a demon and possibly hasn't been to Earth T*B*****
458. Real person; poet, playwright; heroes visited him to get a piece of a loom ******* ***K*******
459. Original; high school graduate; became pregnant with a time traveller's baby ***
460. Original; unrevealed; mother of a cast character ***B** ***
461. Original; unrevealed; had an emotional affair in a VR world J******* B*T**
462. Original; pilot of sorts; was saved from time pirates by heroes *** B*****
463. Apparently original, though related to real person; unrevealed; uncle of famous musician **C**** *******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ****C*T*  ****K'*  ***T*-*  ******G**G** (has accent somewhere)
465. Real person; queen; revived long after being decapitated  *****  **T****TT*
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** K**T (***- C*****)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character B**K*
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *** T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *T*******  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / ****  *C**TT (***T*- T**##)
472. Folklore (possibly real person but if so heavily embellished); knight; possibly Queste del Saint Graal; another hero used his sword to save his kingdom from super-villains  G******
473. Original; psychologist; treated a cast character ***K
474. Original; judge; precided over trial of a cast character (but not main character)  B**CK*TT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  ***G* (***T*-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  G***** / T***  ********
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  **T*** (********  ***T****)
479. Original; criminal gang leader; used alien tech in crimes C**T *****
480. Original; government agent; recurring ally of cast characters  ******* (***T*-#8)
481. Original; high school student when last seen; close friend of cast character during teen years J****
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.J.  **GG**
485. Comics; criminal; Robin Annual; could morph hands into blades ********** /  *******  *****
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain B***
487. Original; unrevealed; villager in an African nation  *********
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****** ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  ***** **C**T*
490. Original; crime boss; killed by gaseous villain ****  ***B*****
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  *****-****T**
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  **CK* *******
494. Original; slave turned spy; tasked with stealing battle plans from an enemy ***** *C*TT
495. Original; engineer; super-villain tried to take him captive C***
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  ***T*-T**#7 ******G**G** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp ***** C*****
498. Original; some sort of criminal boss; mother of cast character's children K****
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos **** T**** (**B*T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money J**** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ****C ****T**
503. Comics (different first name); CEO; Batman; mother of main character J*** J*T
504. Real person or comics depending on how you look at it; unrevealed; Flash Comics; resident of Iowa City during some period of the 20th century K****'* #### ****C****T***
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart J***
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T*****
507. Comics going by character in general, earlier show going by specific name; founder/CEO;  Superman's Girl Friend, Lois Lane but this name from Smalllville; father of major villain  ****** **T***
508. Real person; senator; betrayed his best friend B**T**
509. Comics (different first name; two possibilties for comics countpart with one having a closer first name); lieutenant turned resistance member; DC Universe Presents or Villains United; daughter of main villain of a season C******** ******
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character ***T** *****
511. Comics; CEO; The Power Company; had nannite-created powers B***** /  J*** ******
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. B*T***
513. Original; server; played Dungeons & Dragons with cast character ***C*
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ******
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** ***K**
518. Original; high school student; son of a police commissioner *T**** ***B**
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** C***
520. Original; unrevealed; childhood bully of major villain J**** ******C*
521. Original; senator; initially had anti-alien views ******* C****
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth ***
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle T****
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue **** ******
527. Original; spy of sorts; impersonated cast character ***T* ***T*** ("**** *******")
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being *****
529. Original; unrevealed; grandmother of cast character *****T
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero J***
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration ** C***
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact ****T**** /  B*TT* **** ***C*
534. Original; student, also vigilante in one future; legacy villain in erased future C*C*** /  G**** G******
535. Original; unrevealed, likely student if any; from a post-Soviet country **K****
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **T* ******* (**B*T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator ***** K***** (***********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *****G*T
539. Original; investor; invested in an attempt to make a museum **G*
540. Original; unrevealed; husband shot by card themed villain J*** ******GT**
541. Original; government agent; electrocuted underwater **** ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C****** *B****    
543. Original; psychologist; kidnapped by group run by villain wanting advice ******
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* ****** (***T*-#)
545. Original; army leader; alien who helped try to take over the Earth T** C********
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ******
548. Original; being specific would reveal most of the answer, but some sort of mayor aide; affected by some sort of outbreak at City Hall C**** ** *T*** ** **T***** C*T*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **** **CK*TT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **** ****T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement ***C* /  B***** ****K
552. Original; housewife; wife of major villain ***** **CK****
553. Original; security agent; ex-husband of cast character T****
554. Original; government agent; hunted a villain who killed him T***G
555. Original with some comics elements. This one's a bit complicated. In one sense this is a separate character than one seen earlier (which is how Arrowverse Wiki originally treated them as) but subsequent evidence (from after I created this collage) places them more as the earlier character themself (previously found); adventurer as such; Flash Comics (comics elements); if separate character, they share DNA of a major character mixed with an alien's **** ***** (C****)
556. Mythology; likely none; Greek myths; known to party at college fraternities ********
557. Original; high school student; ex-boyfriend of cast character **** ***T*
558. Original; likely student of any; son of a later superhero *K** *********
559. Original; judge; let main character out on bail C. *CG*****
560. Original; construction manager; helped build amusement park **K** T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens ***** B****
562. Real person; pirate; brought back after death B**CK C*****
563. Original; child trafficker; kidnapped main character while latter still a kid C****** ***G
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K***G**
566. Original; police officer; arrested cast characters for disrespecting him and partner ******
567. Original; company vice president; helped foot bill for free medical event **** ******
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**** *****'* ***T*-* ******G**G** (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters K**** **GG***
570. Comics; vigilante; Action Comics; alien who wears something with extra-dimensional properties **T
572. Original; student; had a birthday party in which her mother was attacked ***** B****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects B**CK B**** / **** C***T**
574. Original; asylum inmate; has drooling problem *B*****
575. Original; research assistant; tried to run tests on cast character **G**
576. Original; some sort of special agent; hypnotized after being called in for performance review ******
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** B*****
578. Original; pastor; lived in Odessa, Texas in 1925 ******
579. Original; science centre owner; secretly worked for season main villain ***G ******
580. Original; unrevealed, likely student if any; has alien for a pet ***** (***K*'* *****)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK******
582. Comics but related to comics based characters; unrevealed; Countdown Presents: The Search for Ray Palmer: Crime Society; sister of a comic book DA who's been mentioned but not yet seen ****** ***T
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car *** **G
585. Original; police officer; seen at a crime scene caused by two super-villains G*BB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ******
587. Original; high school music teacher; surname is a music term *****
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** ******
589. Real person; physicist; kidnapped by cast character to help solve a specific problem *******
590. Original; bounty hunter; tried to collect on a bounty on a main character *****B**
591. Original; police officer; arrested cast characters for disrespecting him and partner ***T*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters **K**** **K****
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T***** ******KT**
595. Original; nation's president; killed during alien invasion T*******
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident ***TT C****** (***T*-#)
597. Original; secretary for major recurring character (season 1 of series) *******
598. Original; judge; precided over trail of main character's mother ******B***
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. ***C****'*  **T***
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis **T**
601. Original; unrevealed; childhood friend of cast character ***** ****
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character ***T* ***T*** ("******* C****")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ***G**** /  ***** ******G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T** / **** ******
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian ***K** T*****
606. Original; criminal; serving a life sentence for two counts of murder **T** T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** ****TT (***T*-#)
608. Comics (likely different real name, Arrowverse version missing first word in code name); criminal, weapons dealer; The Flash; can create box-like force fields B**CK / ******* J*****
609. Original; scientist; alien with thorns on his forearms ***** ****
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** C*T*  ****** a.k.a.  ****T* #### /  *T*****  *****
611. Original; mixed martial artist; affected by totem during tournament ****K  C****
612. Original; police officer; tried to force major character to testify against main character *. ***K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *** **** /  *******  **G***
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J*** *****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past ****C* C******
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*T* K*** (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake ***** ***K**
618. Original; money launderer; worked for crimelord in flashbacks ***T* *****K**
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign **** **K**
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy B**T** **C****C
622. Comics; assassin; first appeared in own series; crew teamed with major villain *****C** / *****
623. Original, though name might be a nod to two real life people; business founder, investment magnate, philanthropist, socialite; held a fundraising gala where she spokie with cast characters looking for her son T****** ***K**
624. Original; unrevealed, likely student; cast character's first cousin once removed C****
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******T / **** B*****
626. Original; crime lord (code name refers to another occupation that he doesn't actually have); took over part of town after an earthquake T** ***** /  ****** ****
627. Original; police officer; killed by cast character in self-defense B**CK
628. Original; cultist; part of a coven wishing for old deities to be worshipped *****
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J***T
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object *****T** C******
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***** ***G* (***********)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *******K
633. Comics; security agent, police officer; Robin; murdered cast character's father **T***T** /  **G*** **B***
634. Original; unrevealed; has fragokinesis power ***K** B****
635. Original; unrevealed; kidnapped by legacy villain ***T*** **TC******
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower G*** ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *** *******
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** **G** (**B*T)
640. Original; special agent of sorts; awarded Agent of the Month **** *C****
641. Original; unrevealed; father of cast character **** ***
642. Comics (name with slight capitalization difference from novel); scientist; Action Comics, name from The Adventures of Superman; similarly named character (missing one letter) from same creators from New Adventure Comics; father of major character J**-**
643. Original; bus driver, criminal; stomach slashed by major villain K***** *****
644. Original; receptionist; tried unsuccessfully to stop main character's arrival J***
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  **** C*****T**
646. Original; unrevealed; gained powers in an experiment J***** T*****
647. Original; criminal; right-hand man for recurring villain ***CK
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero ******** / K**-** (***T*- T**##)
649. Real person; theatrical producer; oversaw major playwright's work ****** ********
651. Original; councilman; ally of major villain K*****
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K***
653. Original; bartender; ex-girlfriend of main character ***G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*** K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TT** *****
656. Original; doctor; assigned to care for main character ****** *****G***
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CK*****
659. Original; research scientist; killed after procuring a map ***** **G***
660. Original; college student; member of fraternity and convention attendee K*** ****K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ******* J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective **** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  *****TT *****
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy B**CK**T / ****** G*****
665. Original; editor-in-chief; succeeded comics based character in role  ****** *******
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** B****
667. Real person; astronaut; major villain impersonated him J*** ***G**T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** ******KT**
669. Original; unrevealed; alien with fire powers ********* *TT*CK**
670. Original; anchorwoman; often reports on main character's activities **** ****TT
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain C**** G***
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets T** ***G***
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** G*T*
674. Original; unrevealed; sibling of major villain ***** *****'* ***T**
675. Original; police officer; villain attached bomb to chest ******
676. Original; criminal; robbed blood banks for sustenance ***** ***T*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. **G*T /  K***** *****
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***T** J***** / "C*** ******"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality **B**
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband **** ***T-***** (***T*-#)
682. Original; inmate; magical fugitive who loves to sing *G** /  *******C
683. Original; unrevealed; fan of major character's writing *****
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character ******T* ****C* G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *T***
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous B**T** /  ***B**T G***G* *****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C****C*B**
688. Original; unrevealed; accused of being a witch J*** ***T*****
689. Original; music student graduate; attended University of Cincinnati ****T* ******
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G**T***
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J*****
692. Original; executive staffer; worked for villain's parents **T*
693. Original; sorcereress cult member; mother of cast character **T**** **G**
694. Original; scientist; created super-soldiers with powers of specific villain **T***CT**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion C*********
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage **T** K***
699. Original; news correspondent; reported on a first episode incident **CK
700. Comics (comics version's real name unknown); jewel thief, mercenary; Green Arrow and Black Canary; uses a hostage to procure an item he wants by attaching a bomb collar to their necks ***G** /  *****CK ***T**
701. Original; army member; served under cast character **T***
702. Comics; scientist; The Fury of Firestorm; was seen as a potential superhero but became a villain T*K***K /  ***** ****TT
703. Original; security agent, criminal; helped frame cast characters ******
704. Original; scientist; wife of major event character *****
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain ***G**
706. Original; singer; participated in reality TV competition ***C** (one letter has accent)
708. Original; football player running back; testified against murderous brother ****** T*****
709. Original; media employee; mind controlled into committing suicide K****
710. Original; scientist; wife of someone who was impersonated for a long time T*** ***G**
712. Original; unrevealed; was seen as candidate for human trials *****CK *******
713. Original; director; worked for major studio in 1937 ****** C******
714. Original; police officer; killed in an ambush J****
715. Real person; musician; strand of hair snagged by cast character J**** J*****
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' **T*** (******** ***T****)
717. Original; scientist; ally of main character's mother J*T***** *****T**** ****T***G**T (note: while not named in the show souce sources claim she's **. T***)
718. Original; unrevealed; version of another character, attended a World's Fair ***T* B*******
719. Comics characters share code name but unclear if actual counterpart; extremist, would-be assassin; earliest known DC Comics use of name from Teen Titans; attempted to assassinate a US President *C**C***
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld C*C*** ***T** (***********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. **G** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** *****
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information ***G*CK
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***T*
727. Comics; henchman; Action Comics; member of alien army who confronted another alien for making himself known to a government agency G**
728. Original; mobster, mechanic, repair shop owner; used as source of information by main character ***** ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*B**-****** /  *****  ******GT**
730. Comics (two characters, one gender swapped); meteorologist turned criminal; Gotham Underground  (code name); The Flash (similar but gender swapped real name); weapon can harness the power of atmokinesis ****T*** **TC* /  J***** J*CK**