465. Marie Antoinette

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 the letter P.

Letters/numbers found so far: BCGKLPT780

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 *******  ******
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 ****  *P**** / ****  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 /  **C****  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*****  P*****
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 **** P***
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 *.P. ***** (***T*-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** C****
425. Original; unrevealed; uncle of cast character **C*
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* P***C* **P**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****P
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 P**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 ***** P**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**P****
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**** P******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ****C*T*  ****K'*  ***T*-*  **PP**G**G** (has accent somewhere)
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*P*****  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 P**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*** (********  P**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 *********P /  *******  ****P
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 *******  ***P*-****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 **PP**G**G** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**** C**P**
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*CK *P****
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 P*PP*
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 P***T**** /  B*TT* **** ***C*
534. Original; student, also vigilante in one future; legacy villain in erased future C*C*** /  G**** G*BB***
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 ***** ****P*
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 P**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*-* **PP**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 P*****
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 ***** (*P*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 ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *P****
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) P******
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 ***** P***
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*P / **** ******
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**K** T*****
606. Original; criminal; serving a life sentence for two counts of murder P*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 P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave **P **** /  *******  **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 P***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 P**T* *****K**
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign P*** B*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 **CK** 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 P*** ***
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**P**T**
646. Original; unrevealed; gained powers in an experiment J**P** 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 **P***** / K**-** (***T*- T**##)
649. Real person; theatrical producer; oversaw major playwright's work P****P ********
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*B***
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** P**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*** ***P**"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*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* P***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**P*C*B**
688. Original; unrevealed; accused of being a witch J*** ***T*****
689. Original; music student graduate; attended University of Cincinnati ****T* **P***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G*PT***
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 P*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 *P**** 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*P***
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' **T*** (******** P**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**

 

438. John F. Kennedy

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 the letter I; in cases like this letter where an accent is over the letter, I'm adding the accents and removing the accent note).

Letters/numbers found so far: BCGIKLPT780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba; movie nod is to Apocalypse Now KI*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 ***I** C***I**
371. Original; judge; killed by someone whose trial she presided over *******  ******
372. Original; high school teacher; statutory rapist ******  B******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  B*I*G*
374. Original; cultist; escaped a raid on boss' lair initially  *C***T* /  C**IG
376. Original; weapons dealer; led a street gang  B****  ****TTI
377. Original; firefighter; fire department including her is recurring  T***** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired BI**  C***I***
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  ******** ***í
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  **I**
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  ****I***  ********* *****'  *I*T* **-*I** ( ***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 ****  *PI*** / ****  B**K*
389. Original; attorney; represented the main villain of the season  *IT*****I*
390. Original; unrevealed; flirted with cast character I*** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K****I ***C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **I*****  **I******
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*I******  B******
394. Original; high school student; plays football and likes to drink C****  *****IT*
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  *ITC*  ******
399. Original; pizza place owner; hates aliens  ****I**
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*****  **I*ICK
401. Original; criminal; used an electrical blaster  KI*****T /  *IC****  K**T*I***
402. Original; student turned assassin; kidnapped by extreme sect  T**IB** / ***I  **TI***
403. Original; government agent; worked with the main villain of the season  J*****  PI****
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 **** P***
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  **CI** *** (*.I.)
409. Original; personal assistant; host of alien consciousness I*** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *****I*
413. Real person; musician; performed at night club opening and was played by himself *T*** **KI
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 ****I*** ********* *****' ****T* **-*I** (***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*I*
422. Original; crime syndicate member; stole liquid nitrogen *I*GI* G*TT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. ***** (***T*-##)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** C****
425. Original; unrevealed; uncle of cast character *IC*
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** **I***
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***I* **ICK (***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 ***I*T *I***T*** (*****TI** ***T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* **I*****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 **I* **IK****
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*** CIT* P**IC* **P**T***T ***IC**
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C** ***IT*
440. Original; unrevealed; mother of cast characters ******* T****I
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** *ICK***
443. Original; corportation founder, inventor; main villain of a season; likes to sing BI***P
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour IC*I** ******I**
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**I* ****  I**** ( ***T*- T**##)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes *ICT** **C**TI
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***I*
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  *I****
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J****TT P**K**
454. Earlier character this continuity; unrevealed; appeared after solving an equation ****I***  ***** (***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 *I*** P**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 TIB**I**
458. Real person; poet, playwright; heroes visited him to get a piece of a loom; extremely famous *I**I** ***K**P****
459. Original; high school graduate; became pregnant with a time traveller's baby **I
460. Original; unrevealed; mother of a cast character I**B** ***
461. Original; unrevealed; had an emotional affair in a VR world J***I*** 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 **CI*** P******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ***ICIT*  ****K'*  ***T*-*  **PP**G**G** (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** K**T (***- C*I*I*)
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*P***I*  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / *I**  *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 P**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  *I*G* (***T*-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  GI**** / T***  ********
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  **T*** (***I*I**  P**TI***)
479. Original; criminal gang leader; used alien tech in crimes C**T *I***
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**I*
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.J.  *IGG**
485. Comics; criminal; Robin Annual; could morph hands into blades *********P /  *******  ****P
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  ***I*****
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****I* ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  **I** **C**TI
490. Original; crime boss; killed by gaseous villain ****  ***BI****
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  ***P*-**I*T**
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  *ICKI *******
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 **PP**G**G** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**** C**P**
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 ***i T***i (**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 ***iC **i*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****'* #### **i*C****Ti**
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  *I**** **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 BI**** /  J*CK *P****
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 ****** *I*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*I*
520. Original; unrevealed; childhood bully of major villain J**** *****IC*
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 *I** ******
527. Original; spy of sorts; impersonated cast character **IT* ***TI** ("**** *******")
528. Original; unrevealed, likely student if any; had wish powers due to connection to antoher being PIPP* [LOCKED; characters found at time of locking: BCGIKLPT780]
529. Original; unrevealed; grandmother of cast character *i***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 P***Ti*** /  B*TT* **** ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*** /  G**** GIBB***
535. Original; unrevealed, likely student if any; from a post-Soviet country *IK**I*
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 **I** K***** (*I*********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *I**IG*T
539. Original; investor; invested in an attempt to make a museum **G*
540. Original; unrevealed; husband shot by card themed villain J*** ****I*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 ***** ****P*
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*I** ** *T*** I* **TI**** CIT*
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 P**C* /  B***I* ***IK
552. Original; housewife; wife of major villain ***I* **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 *I******
557. Original; high school student; ex-boyfriend of cast character **** **IT*
558. Original; likely student of any; son of a later superhero *KI* ******I**
559. Original; judge; let main character out on bail C. *CG*****
560. Original; construction manager; helped build amusement park *IK** T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens *I*** 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***I** ***G
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K**IG**
566. Original; police officer; arrested cast characters for disrespecting him and partner ***I**
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*-* **PP**G**G** (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters K**I* **GGI**
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 **I** B****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects B**CK BI*** / *I** C***T**
574. Original; asylum inmate; has drooling problem *B*****
575. Original; research assistant; tried to run tests on cast character *IG**
576. Original; some sort of special agent; hypnotized after being called in for performance review P*****
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 *I****
580. Original; unrevealed, likely student if any; has alien for a pet ***** (*PIK*'* *****)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK**I***
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 GIBB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ***I**
587. Original; high school music teacher; surname is a music term ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *P****
589. Real person; physicist; kidnapped by cast character to help solve a specific problem ***I***
590. Original; bounty hunter; tried to collect on a bounty on a main character ****IB**
591. Original; police officer; arrested cast characters for disrespecting him and partner **IT*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters *IK**I* **K**I*
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*** *****IKT**
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***I** (***T*-#)
597. Original; secretary for major recurring character (season 1 of series) P***I**
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 **. *I*C**I*'*  **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 **I** P***
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character **IT* ***TI* ("*I**** C****")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ***G**** /  ***** ****I*G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** *I****
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**K** T*****
606. Original; criminal; serving a life sentence for two counts of murder P*T** T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** ***ITT (***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** CIT*  ****** a.k.a.  I***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 P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *IP **** /  *******  **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 P*I*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 **I** ***K**
618. Original; money launderer; worked for crimelord in flashbacks P**T* **I**KI*
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign P*I* B*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***IC
622. Comics; assassin; first appeared in own series; crew teamed with major villain **I**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**I*
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******T / **I* 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** ***** /  ***I** ****
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 **I**
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 ***I*T** C******
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***I* *I*G* (*I*********)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** **I****K
633. Comics; security agent, police officer; Robin; murdered cast character's father **T***T** /  *IG*** **B***
634. Original; unrevealed; has fragokinesis power *ICKI* B****
635. Original; unrevealed; kidnapped by legacy villain **IT*** **TC*I****
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 **I* *C**I*
641. Original; unrevealed; father of cast character P*** ***
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*I*** *****
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**P**T**
646. Original; unrevealed; gained powers in an experiment J**P** 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 **P***** / K**-** (***T*- T**##)
649. Real person; theatrical producer; oversaw major playwright's work P****P ********
651. Original; councilman; ally of major villain K*****
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K*I**
653. Original; bartender; ex-girlfriend of main character ***G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*I* 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 ****** ****IG***
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CK***I*
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 *****I* 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  ****ITT ***I*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy B**CK**T / ****** GIB***
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*** **IG**T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** *****IKT**
669. Original; unrevealed; alien with fire powers I*****I** *TT*CK**
670. Original; anchorwoman; often reports on main character's activities **** ***ITT
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** P**G*I*
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** G*T*
674. Original; unrevealed; sibling of major villain ***I* *****'* *I*T**
675. Original; police officer; villain attached bomb to chest *I****
676. Original; criminal; robbed blood banks for sustenance *I*** **IT*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. *IG*T /  KI*I** ****I
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***T** J*I*** / "C*** ***P**"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*B**
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband I*I* ***T-***** (***T*-#)
682. Original; inmate; magical fugitive who loves to sing *G** /  ******IC
683. Original; unrevealed; fan of major character's writing ***I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character *****IT* P***C* G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *T*I*
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous B**TI* /  ***B**T G***G* *****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C**P*C*B**
688. Original; unrevealed; accused of being a witch J*** ***T*****
689. Original; music student graduate; attended University of Cincinnati ***iT* *iP***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G*PT***
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 *IT*
693. Original; sorcereress cult member; mother of cast character **T**I* **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*******I*
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage P*T** K***
699. Original; news correspondent; reported on a first episode incident *ICK [LOCKED; characters found at time of locking: BCGIKLPT780]
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** /  *I**ICK ***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 /  ***** ***ITT
703. Original; security agent, criminal; helped frame cast characters *I****
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 *I*GI*
706. Original; singer; participated in reality TV competition ***C** (one letter has accent)
708. Original; football player running back; testified against murderous brother *P**** 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 ****ICK *I*****
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**I* J*P*I*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' **T*** (***I**I* P**TI***)
717. Original; scientist; ally of main character's mother J*T**I** I****T*I** ****T***GI*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 **IT* 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*CI** ***T** (*I*********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. **G** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** ***I*
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information *I*GICK
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 ****I ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*B**-****** /  *****  ****I*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*** *ITC* /  J***** J*CK**

 

528. Pippa

Those two are correct; list updated.

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 the number 2 and the letter W.

Letters/numbers found so far: BCGIKLPTW2780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba; movie nod is to Apocalypse Now KI*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 ***I** C***I**
371. Original; judge; killed by someone whose trial she presided over *******  **W***
372. Original; high school teacher; statutory rapist ******  B******
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  B*I*G*
374. Original; cultist; escaped a raid on boss' lair initially  *C***T* /  C**IG
376. Original; weapons dealer; led a street gang  B****  ****TTI
377. Original; firefighter; fire department including her is recurring  T***** /  ******
378. Original; engineer; reported co-worker to boss, causing her to be fired BI**  C***I***
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  ******** ***í
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  **I**
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  ****I***  ********* W****'  *I*T* **-WI** ( ***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 W***  *PI*** / ****  B**K*
389. Original; attorney; represented the main villain of the season  *IT*****I*
390. Original; unrevealed; flirted with cast character I*** ****
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K****I ***C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **I*****  **I******
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*I******  B******
394. Original; high school student; plays football and likes to drink C****  W****IT*
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  *ITC*  ******
399. Original; pizza place owner; hates aliens  ****I**
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*****  **I*ICK
401. Original; criminal; used an electrical blaster  KI*****T /  *IC****  K**T*I***
402. Original; student turned assassin; kidnapped by extreme sect  T**IB** / ***I  **TI***
403. Original; government agent; worked with the main villain of the season  J*****  PI****
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 *W** P***
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  **CI** *** (*.I.)
409. Original; personal assistant; host of alien consciousness I*** ******
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages *****I*
413. Real person; musician; performed at night club opening and was played by himself *T*** **KI
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 ****I*** ********* W****' ****T* **-WI** (***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*I*
422. Original; crime syndicate member; stole liquid nitrogen *I*GI* G*TT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. W**** (***T*-2#)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** C****
425. Original; unrevealed; uncle of cast character *IC*
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** **I***
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth ***I* **ICK (***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 ***I*T *I***T*** (*****TI** ***T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* **I*****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 **I* **IK****
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*** CIT* P**IC* **P**T***T ***IC**
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C** ***IT*
440. Original; unrevealed; mother of cast characters ******* T****I
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** WICK***
443. Original; corportation founder, inventor; main villain of a season; likes to sing BI***P
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour IC*I** ******I**
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**I* ****  I**** ( ***T*- T**22)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes *ICT** **C**TI
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***I*
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  ****** /  *****  *I****
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J****TT P**K**
454. Earlier character this continuity; unrevealed; appeared after solving an equation ****I***  W**** (***T*- T**2)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth *I*** P**K
456. Original; prison warden; fired for misuse of prisoners W**TT K*T*
457. Original; personal accountant; is a demon and possibly hasn't been to Earth TIB**I**
458. Real person; poet, playwright; heroes visited him to get a piece of a loom; extremely famous WI**I** ***K**P****
459. Original; high school graduate; became pregnant with a time traveller's baby **I
460. Original; unrevealed; mother of a cast character I**B** ***
461. Original; unrevealed; had an emotional affair in a VR world J***I*** 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 **CI*** P******
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish ***ICIT*  ****K'*  ***T*-*  **PP**G**G** (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** K**T (***- C*I*I*)
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*P***I*  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / WI**  *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 P**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  *I*G* (***T*-#)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  GI**** / T***  W*******
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters ****  *******'  **T*** (***I*I**  P**TI***)
479. Original; criminal gang leader; used alien tech in crimes C**T *I***
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**I*
482. Original; district attorney; questioned main character during his or her trial ***** *** ****
484. Original; presumed student; nephew of cast character *.J.  *IGG**
485. Comics; criminal; Robin Annual; could morph hands into blades *********P /  *******  ****P
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  ***I*****
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  ****I* ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  **I** **C**TI
490. Original; crime boss; killed by gaseous villain ****  ***BI****
491. Original; government agent; hunted a villain who killed him  ********
492. Original; unrevealed; killed by parasitic villain *******  ***P*-**I*T**
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  *ICKI *******
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 **PP**G**G** (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**** C**P**
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 ***i T***i (**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 ***iC **i*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****'* #### **i*C****Ti**
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  *I**** **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 BI**** /  J*CK *P****
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 ****** *I*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*I*
520. Original; unrevealed; childhood bully of major villain J**** *****IC*
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 *I** W*****
527. Original; spy of sorts; impersonated cast character W*IT* ***TI** ("**** *******")
529. Original; unrevealed; grandmother of cast character *i***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 P***Ti*** /  B*TT* **** ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*** /  G**** GIBB***
535. Original; unrevealed, likely student if any; from a post-Soviet country *IK**I*
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 **I** K***** (*I*********)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *I**IG*T
539. Original; investor; invested in an attempt to make a museum **G*
540. Original; unrevealed; husband shot by card themed villain J*** W***I*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 ***** ****P*
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*I** ** *T*** I* **TI**** CIT*
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 P**C* /  B***I* ***IK
552. Original; housewife; wife of major villain ***I* **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 *I******
557. Original; high school student; ex-boyfriend of cast character **** **IT*
558. Original; likely student of any; son of a later superhero *KI* ******I**
559. Original; judge; let main character out on bail C. *CG*****
560. Original; construction manager; helped build amusement park *IK** T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens *I*** 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***I** ***G
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K**IG**
566. Original; police officer; arrested cast characters for disrespecting him and partner ***I**
567. Original; company vice president; helped foot bill for free medical event **** W*****
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**** *****'* ***T*-* **PP**G**G** (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters K**I* **GGI**
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 **I** B****
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects B**CK BI*** / *I** C***T**
574. Original; asylum inmate; has drooling problem *B*****
575. Original; research assistant; tried to run tests on cast character *IG**
576. Original; some sort of special agent; hypnotized after being called in for performance review P*W***
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 *I****
580. Original; unrevealed, likely student if any; has alien for a pet ***** (*PIK*'* *****)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK**I***
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 GIBB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ***I**
587. Original; high school music teacher; surname is a music term ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *P****
589. Real person; physicist; kidnapped by cast character to help solve a specific problem ***I***
590. Original; bounty hunter; tried to collect on a bounty on a main character ****IB**
591. Original; police officer; arrested cast characters for disrespecting him and partner **IT*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman **** ******
593. Original; army officer; led soldiers in capturing cast characters *IK**I* **K**I*
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*** *****IKT**
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***I** (***T*-#)
597. Original; secretary for major recurring character (season 1 of series) P***I**
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 **. *I*C**I*'*  **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 **I** P***
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character W*IT* ***TI* ("*I**** C****")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ***G**** /  ***** ****I*G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** *I****
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**K** T*****
606. Original; criminal; serving a life sentence for two counts of murder P*T** T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  ***** **WITT (***T*-2)
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** CIT*  ****** a.k.a.  I***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 P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *IP **** /  *******  **G***
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J*** W****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past P*I*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 **I** ***K**
618. Original; money launderer; worked for crimelord in flashbacks P**T* **I**KI*
619. Original; unrevealed if any; vampire ******
620. Original; nation's President; took on role after predecessor forced to resign P*I* B*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***IC
622. Comics; assassin; first appeared in own series; crew teamed with major villain **I**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**I*
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******T / **I* 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** ***** /  ***I** ****
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 **I**
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 ***I*T** C**W***
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***I* *I*G* (*I*********)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** **I****K
633. Comics; security agent, police officer; Robin; murdered cast character's father **T***T** /  *IG*** **B***
634. Original; unrevealed; has fragokinesis power *ICKI* B****
635. Original; unrevealed; kidnapped by legacy villain W*IT*** **TC*I****
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 **I* *C**I*
641. Original; unrevealed; father of cast character P*** ***
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*I*** *****
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**P**T**
646. Original; unrevealed; gained powers in an experiment J**P** 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 **P***** / K**-** (***T*- T**22)
649. Real person; theatrical producer; oversaw major playwright's work P****P ********
651. Original; councilman; ally of major villain K*****
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K*I**
653. Original; bartender; ex-girlfriend of main character ***G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*I* 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 ****** ****IG***
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CK***I*
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 *****I* 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  ****ITT ***I*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy B**CK**T / ****** GIB***
665. Original; editor-in-chief; succeeded comics based character in role  ****** ***W***
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*** *WIG**T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** *****IKT**
669. Original; unrevealed; alien with fire powers I*****I** *TT*CK**
670. Original; anchorwoman; often reports on main character's activities **** **WITT
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** P**G*I*
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal ** G*T*
674. Original; unrevealed; sibling of major villain ***I* *W***'* *I*T**
675. Original; police officer; villain attached bomb to chest *I****
676. Original; criminal; robbed blood banks for sustenance *I*** W*IT*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. *IG*T /  KI*I** ****I
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***T** J*I*** / "C*** ***P**"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*B**
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband I*I* W**T-***** (***T*-2)
682. Original; inmate; magical fugitive who loves to sing *G** /  ******IC
683. Original; unrevealed; fan of major character's writing ***I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character *****IT* P***C* G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *T*I*
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous B**TI* /  ***B**T G***G* W****
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C**P*C*B**
688. Original; unrevealed; accused of being a witch J*** **WT*****
689. Original; music student graduate; attended University of Cincinnati ***iT* *iP***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G*PT***
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 *IT*
693. Original; sorcereress cult member; mother of cast character **T**I* **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***W***I*
696. Original; night club owner; main character slept with his fiancée *** ******
697. Original; executive employee; committed acts of industrial espionage P*T** K***
699. Original; news correspondent; reported on a first episode incident *ICK [LOCKED; characters found at time of locking: BCGIKLPT780]
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** /  WI**ICK ***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 /  ***** **WITT
703. Original; security agent, criminal; helped frame cast characters *I****
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 *I*GI*
706. Original; singer; participated in reality TV competition ***C** (one letter has accent)
708. Original; football player running back; testified against murderous brother *P**** 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 ****ICK *I*****
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**I* J*P*I*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **** *******' **T*** (***I**I* P**TI***)
717. Original; scientist; ally of main character's mother J*T**I** I****T*I** ****T***GI*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 **IT* 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*CI** ***T** (*I*********)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. **G** ******
722. Original; criminal; kidnapped people in a revenge attempt ****** ***I*
723. Original; federal agent; killed by cultists *****
724. Original; storage worker; tortured by main character for information WI*GICK [LOCKED; letters/numbers found at time of locking: BCGIKLPTW2780]
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 ****I ******
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*B**-W***** /  *****  W***I*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 W***T*** WITC* /  J***** J*CK**

 

724. Widgick

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 the letter E.

Letters/numbers found so far: BCEGIKLPTW2780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba; movie nod is to Apocalypse Now KI*G**E
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows *E*C* G***E*
370. Original; plantation and slave owner; fought zombie soldiers ***IE* C***I**
371. Original; judge; killed by someone whose trial she presided over **E*E**  **W***
372. Original; high school teacher; statutory rapist ****E*  BE*****
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  B*I*GE
374. Original; cultist; escaped a raid on boss' lair initially  *C***TE /  C**IG
376. Original; weapons dealer; led a street gang  B****  ***ETTI
377. Original; firefighter; fire department including her is recurring  T**E** /  ****E*
378. Original; engineer; reported co-worker to boss, causing her to be fired BI**  C***I**E
379. Original; CEO; eyes were gouged out E***  C**TE******
380. Original; student if any; parents killed by assassin  T*****  ****E
381. Real person; artist; known for surreal art  ******** ***í
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  **I**
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** ***E**
384. Original; firefighter; got doused in turpentine ***** *E ** *EG*
385. Real person; newscaster; played by herself, though real person reports out of a different city  *E*** *G**E*
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ****I***  **E*****E WE***'  *I*T* E*-WI*E ( E**T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**T*E /  ****E**  G******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character W***  *PI*E* / E***  B**KE
389. Original; attorney; represented the main villain of the season  *IT*****I*
390. Original; unrevealed; flirted with cast character I*** ***E
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K****I ***C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **I*****  **I******
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*I**E***  B****E*
394. Original; high school student; plays football and likes to drink C**E*  WE***IT*
396. Original; Italian restaurant owner; homophobic  **E*******
397. Original; criminal; blackmail and threatened the life of someone C***  *T***E*
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  *ITC*  ***E**
399. Original; pizza place owner; hates aliens  ****I**
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*E***  **I*ICK
401. Original; criminal; used an electrical blaster  KI*****T /  *IC**E*  K**T*I***
402. Original; student turned assassin; kidnapped by extreme sect  T**IB** / *E*I  **TI***
403. Original; government agent; worked with the main villain of the season  J*****  PIE*CE
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 *WE* P***
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (E**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  **CI** *** (*.I.)
409. Original; personal assistant; host of alien consciousness I*** ****E*
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages **E**I*
413. Real person; musician; performed at night club opening and was played by himself *TE*E **KI
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain BE**
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 ****I*** **E*****E WE***' ****T* E*-WI*E (E**T*-T**#0)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C******** ***TE*
418. Original; police detective; took part in getting innocents convicted *T* ****E***
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*E ***CE*E*
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *TEI*
422. Original; crime syndicate member; stole liquid nitrogen *I*GI* GETT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. WE*** (E**T*-2#)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character **** C****
425. Original; unrevealed; uncle of cast character *IC*
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** E*I***
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth E**IE **ICK (E**T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** ***E*T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers ***IET *I*E*T*** (***E*TI** ***T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* *EI*****T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** *EEG**
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 E*C***T*E**
435. Real person; Viking warlord; thought that toy from her future had divine messages *EI* E*IK****
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*** CIT* P**ICE *EP**T*E*T ***ICE*
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C** *E*IT*
440. Original; unrevealed; mother of cast characters ****EE* T****I
441. Comics; mayor; Green Arrow; killed by rogue vigilante group **T***
442. Original; high school student; family moved due to father's imprisonment TEG** WICK*E*
443. Original; corportation founder, inventor; main villain of a season; likes to sing BI***P
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour IC*I** ******I**
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline **E*** *E*E**
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**IE ***E  I**** (E**T*- T**22)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes *ICT** **CE*TI
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 *E*
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J***IE
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  **E*** /  **E**  *I*E**
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J***ETT P**KE*
454. Earlier character this continuity; unrevealed; appeared after solving an equation ****I***  WE*** (E**T*- T**2)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth *I*** P**K
456. Original; prison warden; fired for misuse of prisoners W**TT K*TE
457. Original; personal accountant; is a demon and possibly hasn't been to Earth TIBE*I**
458. Real person; poet, playwright; heroes visited him to get a piece of a loom; extremely famous WI**I** ***KE*PE**E
459. Original; high school graduate; became pregnant with a time traveller's baby **I
460. Original; unrevealed; mother of a cast character I**BE* ***
461. Original; unrevealed; had an emotional affair in a VR world JE**I*E* B*TE*
462. Original; pilot of sorts; was saved from time pirates by heroes E*E B***E*
463. Apparently original, though related to real person; unrevealed; uncle of famous musician **CI*** P*E**E*
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish *E*ICIT*  ****K'*  E**T*-*  **PPE*G**GE* (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** KE*T (**E- C*I*I*)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character B**KE
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *E* T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *TEP***IE  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / WI**  *C**TT (E**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 P**K
474. Original; judge; precided over trial of a cast character (but not main character)  B**CKETT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  *I*G* (E**T*-2)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  GI**E* / T***  W*******
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters **E*  ****E**'  **T*E* (***I*I**  P**TI***)
479. Original; criminal gang leader; used alien tech in crimes C*ET *I***
480. Original; government agent; recurring ally of cast characters  *****E* (E**T*-#8)
481. Original; high school student when last seen; close friend of cast character during teen years J**IE
482. Original; district attorney; questioned main character during his or her trial **E** *** **E*
484. Original; presumed student; nephew of cast character *.J.  *IGG*E
485. Comics; criminal; Robin Annual; could morph hands into blades *********P /  **E*E*E  ****P
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain BE**
487. Original; unrevealed; villager in an African nation  ***I*****
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  *E**IE ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  E*I** **CE*TI
490. Original; crime boss; killed by gaseous villain ****  ***BI****
491. Original; government agent; hunted a villain who killed him  *E******
492. Original; unrevealed; killed by parasitic villain *****E*  ***PE-**I*TE*
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  *ICKI ******E
494. Original; slave turned spy; tasked with stealing battle plans from an enemy *E*** *C*TT
495. Original; engineer; super-villain tried to take him captive C***
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  E**T*-T**#7 **PPE*G**GE* (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**** C**PE*
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 ***i T***i (**B*T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money JE*** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ***iC *EI*TE*
503. Comics (different first name); CEO; Batman; mother of main character J*** JET
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****'* #### *EIN*C****TI**
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart JE** [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T****E
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  *I**E* **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******** *****E
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character *E*TE* ***E*
511. Comics; CEO; The Power Company; had nannite-created powers BI**** /  J*CK *P*EE*
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. B*T*R*
513. Original; server; played Dungeons & Dragons with cast character ***C*
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ***TE*
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** *I*KE*
518. Original; high school student; son of a police commissioner *TE*E* ***BE*
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** C*I*
520. Original; unrevealed; childhood bully of major villain JE**E *E*E*IC*
521. Original; senator; initially had anti-alien views ******* C***E
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 *I** W***E*
527. Original; spy of sorts; impersonated cast character W*ITE ***TI** ("**E* ****E**")
529. Original; unrevealed; grandmother of cast character *I**ET
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero JE**  [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration E* C***
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact P***TI**E /  BETTE **** ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*** /  G***E GIBB***
535. Original; unrevealed, likely student if any; from a post-Soviet country *IK**I*
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **TE *E***** (**B*T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator **I** K***E* (*I*****E**E)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *I**IG*T
539. Original; investor; invested in an attempt to make a museum **G*
540. Original; unrevealed; husband shot by card themed villain J*** W***I*GT**
541. Original; government agent; electrocuted underwater **E* ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C**E*** *B****    
543. Original; psychologist; kidnapped by group run by villain wanting advice *****E
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* *E**** (E**T*-2)
545. Original; army leader; alien who helped try to take over the Earth T*E C******E*
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ****PE
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*IE* ** *T*** I* **TI**** CIT*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father ***E **CKETT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **E* ****T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement P**C* /  B***I* ***IK
552. Original; housewife; wife of major villain ***I* **CK****
553. Original; security agent; ex-husband of cast character T**E*
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 *I******
557. Original; high school student; ex-boyfriend of cast character *E** **IT*
558. Original; likely student of any; son of a later superhero *KI* ******I**
559. Original; judge; let main character out on bail C. *CG***E*
560. Original; construction manager; helped build amusement park *IKE* T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens *I*** B***E
562. Real person; pirate; brought back after death B**CK C*E***
563. Original; child trafficker; kidnapped main character while latter still a kid C***I*E ***G
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K*IEGE*  [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
566. Original; police officer; arrested cast characters for disrespecting him and partner *E*I**
567. Original; company vice president; helped foot bill for free medical event E*** WE**E*
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**E* ***E*'* E**T*-* **PPE*G**GE* (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters KE*I* **GGI**
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 **I*E B**E*
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects B**CK BI*** / *I** C***T**
574. Original; asylum inmate; has drooling problem *B*****
575. Original; research assistant; tried to run tests on cast character *IGE*
576. Original; some sort of special agent; hypnotized after being called in for performance review P*WE**
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** BEE***
578. Original; pastor; lived in Odessa, Texas in 1925 P**E**
579. Original; science centre owner; secretly worked for season main villain ***G *I****
580. Original; unrevealed, likely student if any; has alien for a pet ***** (*PIKE'* ***E*)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK*EI*E*
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 E*E*** *E*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 GIBB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ***I**
587. Original; high school music teacher; surname is a music term ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *PE***
589. Real person; physicist; kidnapped by cast character to help solve a specific problem ***I*E*
590. Original; bounty hunter; tried to collect on a bounty on a main character ****IB**
591. Original; police officer; arrested cast characters for disrespecting him and partner **IT*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman *E** ******
593. Original; army officer; led soldiers in capturing cast characters *IK**I* **K**I*
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*** *E*E*IKT**
595. Original; nation's president; killed during alien invasion T***E*E*
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident **ETT C***I** (E**T*-2)
597. Original; secretary for major recurring character (season 1 of series) P***I**
598. Original; judge; precided over trail of main character's mother ****E*B***
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. *I*C**I*'*  **T*E*
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 E*I** P***
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character W*ITE ***TI* ("*I**** C***E")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ***G**** /  ***** *E**I*G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** *I****
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**KE* T***E*
606. Original; criminal; serving a life sentence for two counts of murder PETE* T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  *E*** *EWITT (E**T*-2)
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 / ***E*** J***E*
609. Original; scientist; alien with thorns on his forearms ***** ***E
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** CIT*  ****E* a.k.a.  I***TE #### /  *T***E*  ***E*
611. Original; mixed martial artist; affected by totem during tournament ****K  C*EE*
612. Original; police officer; tried to force major character to testify against main character P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *IP **** /  ****E**  **GE**
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J**E W****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past P*I*CE C****E*
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*TE K**E (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake **I** ***K**
618. Original; money launderer; worked for crimelord in flashbacks P**T* **IE*KI*
619. Original; unrevealed if any; vampire **E**E
620. Original; nation's President; took on role after predecessor forced to resign P*I* B*KE*
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy B**T** *EC***IC
622. Comics; assassin; first appeared in own series; crew teamed with major villain *I*E*CE* / *****
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*E*E** *E*KE*
624. Original; unrevealed, likely student; cast character's first cousin once removed C**I*
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation ******T / **I* 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*E ***** /  ***IE* *EE*
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 *EI**
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J**ET
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object **EI*TE* C**W*E*
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***I* *I*G* (*I*****E**E)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *EI****K
633. Comics; security agent, police officer; Robin; murdered cast character's father *ET***T** /  *IG*E* **B*E*
634. Original; unrevealed; has fragokinesis power *ICKIE B**E*
635. Original; unrevealed; kidnapped by legacy villain W*IT*E* **TC*I****
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower GE*E ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *E* **E**E*
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** **G*E (**B*T)
640. Original; special agent of sorts; awarded Agent of the Month *EI* *C*EI*
641. Original; unrevealed; father of cast character P*** ***
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**-E*
643. Original; bus driver, criminal; stomach slashed by major villain KEI*** ****E
644. Original; receptionist; tried unsuccessfully to stop main character's arrival JE** [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  *E*E C**PE*TE*
646. Original; unrevealed; gained powers in an experiment J**PE* T***E*
647. Original; criminal; right-hand man for recurring villain **ECK
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero **PE**** / K**-E* (E**T*- T**22)
649. Real person; theatrical producer; oversaw major playwright's work P****P *E*****E
651. Original; councilman; ally of major villain K***E**
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K*I*E
653. Original; bartender; ex-girlfriend of main character *E*G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*I* K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TTE* *****
656. Original; doctor; assigned to care for main character ****E* ****IG*E*
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CKE**IE
659. Original; research scientist; killed after procuring a map E**** **GE**
660. Original; college student; member of fraternity and convention attendee K**E *E**K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ***E*I* J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective *E** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  *E**ITT ***I*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy B**CK**T / ****** GIB***
665. Original; editor-in-chief; succeeded comics based character in role  ****E* ***WE**
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** B***E
667. Real person; astronaut; major villain impersonated him J*** *WIGE*T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island **** *E*E*IKT**
669. Original; unrevealed; alien with fire powers I**E**I** *TT*CKE*
670. Original; anchorwoman; often reports on main character's activities **** *EWITT
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** P**G*I*
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal E* G*T*
674. Original; unrevealed; sibling of major villain ***I* *W*E*'* *I*TE*
675. Original; police officer; villain attached bomb to chest *I****
676. Original; criminal; robbed blood banks for sustenance *I*** W*IT*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. *IG*T /  KI*I** ****I
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***TE* J*I*E* / "C*** ***PE*"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*B**
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband I*I* WE*T-***E* (E**T*-2)
682. Original; inmate; magical fugitive who loves to sing *G*E /  **E*E*IC
683. Original; unrevealed; fan of major character's writing ***I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character *****ITE P***CE G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *TEI*
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous BE*TIE /  *E*B**T GE**GE WE***
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C**P*C*B**
688. Original; unrevealed; accused of being a witch J**E **WT****E
689. Original; music student graduate; attended University of Cincinnati ***IT* *IP***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G*PT***
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J***E*
692. Original; executive staffer; worked for villain's parents *IT*
693. Original; sorcereress cult member; mother of cast character **T**IE **G*E
694. Original; scientist; created super-soldiers with powers of specific villain *ET***CT**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion C***W***I*
696. Original; night club owner; main character slept with his fiancée *** ****E*
697. Original; executive employee; committed acts of industrial espionage PETE* 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 ***GE* /  WI**ICK ***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 /  *E*** *EWITT
703. Original; security agent, criminal; helped frame cast characters *I**E*
704. Original; scientist; wife of major event character **EE*
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain *I*GI*
706. Original; singer; participated in reality TV competition ***CÉ*
708. Original; football player running back; testified against murderous brother *P**** TE****
709. Original; media employee; mind controlled into committing suicide KE***
710. Original; scientist; wife of someone who was impersonated for a long time TE** ***G**
712. Original; unrevealed; was seen as candidate for human trials *E**ICK *I*****
713. Original; director; worked for major studio in 1937 ****** C**E***
714. Original; police officer; killed in an ambush J**E*
715. Real person; musician; strand of hair snagged by cast character J**I* J*P*I*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **E* ****E**' **T*E* (***I**I* P**TI***)
717. Original; scientist; ally of main character's mother JET**I** I****T*IE* *E**T***GI*T (note: while not named in the show souce sources claim she's **. T***; I'll accept either name)
718. Original; unrevealed; version of another character, attended a World's Fair E*IT* 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*E*
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld CECI*E ***T** (*I*****E**E)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. E*G** ****E*
722. Original; criminal; kidnapped people in a revenge attempt ****** ***I*
723. Original; federal agent; killed by cultists *E***
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***Te
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 **E*I *E****
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*BE*-W***** /  *****  W***I*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 WE**T*E* WITC* /  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 the letters F and V.

Letters/numbers found so far: BCEFGIKLPTVW2780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba; movie nod is to Apocalypse Now KI*G**E
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows *E*C* G***E*
370. Original; plantation and slave owner; fought zombie soldiers ***IE* C***I**
371. Original; judge; killed by someone whose trial she presided over **E*E**  **W***
372. Original; high school teacher; statutory rapist ****E*  BE*****
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  B*I*GE
374. Original; cultist; escaped a raid on boss' lair initially  *C***TE /  C**IG
376. Original; weapons dealer; led a street gang  B****  ***ETTI
377. Original; firefighter; fire department including her is recurring  T**E** /  ****E*
378. Original; engineer; reported co-worker to boss, causing her to be fired BI**  C***I**E
379. Original; CEO; eyes were gouged out E***  C**TE******
380. Original; student if any; parents killed by assassin  T*****  ****E
381. Real person; artist; known for surreal art  ******** ***í
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  **I**
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** ***E**
384. Original; firefighter; got doused in turpentine ***** *E ** VEG*
385. Real person; newscaster; played by herself, though real person reports out of a different city  *E*** *G**E*
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ****I***  **E*****E WE***'  FIFT* E*-WIFE ( E**T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**T*E /  ****E**  G******
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character W**F *PI*E* / E***  B**KE
389. Original; attorney; represented the main villain of the season  FIT*****I*
390. Original; unrevealed; flirted with cast character I*** ***E
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K****I ***C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **I*****  **I******
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*I**E***  B****E*
394. Original; high school student; plays football and likes to drink C**E*  WE***IT*
396. Original; Italian restaurant owner; homophobic  **E*******
397. Original; criminal; blackmail and threatened the life of someone C***  *T***E*
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  *ITC*  ***E**
399. Original; pizza place owner; hates aliens  ****I**
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*E***  **I*ICK
401. Original; criminal; used an electrical blaster  KI**V**T /  *IC**E*  K**T*I***
402. Original; student turned assassin; kidnapped by extreme sect  T**IB** / *E*I  **TIF**
403. Original; government agent; worked with the main villain of the season  J*****  PIE*CE
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 *WE* P***
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (E**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  **CI** F** (*.I.)
409. Original; personal assistant; host of alien consciousness I*** ****E*
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages F*E**I*
413. Real person; musician; performed at night club opening and was played by himself *TE*E **KI
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain BE**
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 ****I*** **E*****E WE***' F***T* E*-WIFE (E**T*-T**#0)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C******** ***TE*
418. Original; police detective; took part in getting innocents convicted *T* ****E***
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** **FF***
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** T*E ***CE*E*
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *TEI*
422. Original; crime syndicate member; stole liquid nitrogen VI*GI* GETT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. WE*** (E**T*-2#)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character F*E* C****
425. Original; unrevealed; uncle of cast character *IC*
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** E*I***
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth E**IE **ICK (E**T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** F**E*T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers **VIET FI*E*T*** (V**E*TI** V**T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* *EI*****T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** *EEG**
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 E*C***T*E**
435. Real person; Viking warlord; thought that toy from her future had divine messages *EIF E*IK****
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*** CIT* P**ICE *EP**T*E*T *FFICE*
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C** *EVIT*
440. Original; unrevealed; mother of cast characters ****EE* T****I
441. Comics; mayor; Green Arrow; killed by rogue vigilante group **T***
442. Original; high school student; family moved due to father's imprisonment TEG** WICK*E*
443. Original; corportation founder, inventor; main villain of a season; likes to sing BI***P
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour IC*I** ******I**
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline F*E*** *E*E**
446. Original; unrevaled; fostered alien child for a time **** F***
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**IE ***E  I**** (E**T*- T**22)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes VICT** **CE*TI
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 *E*
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J***IE
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  F*E*** /  **E**  *IVE**
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J***ETT P**KE*
454. Earlier character this continuity; unrevealed; appeared after solving an equation ****I***  WE*** (E**T*- T**2)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth *I*** P**K
456. Original; prison warden; fired for misuse of prisoners W**TT K*TE
457. Original; personal accountant; is a demon and possibly hasn't been to Earth TIBE*I**
458. Real person; poet, playwright; heroes visited him to get a piece of a loom; extremely famous WI**I** ***KE*PE**E
459. Original; high school graduate; became pregnant with a time traveller's baby **I
460. Original; unrevealed; mother of a cast character I**BE* ***
461. Original; unrevealed; had an emotional affair in a VR world JE**I*E* B*TE*
462. Original; pilot of sorts; was saved from time pirates by heroes E*E B***E*
463. Apparently original, though related to real person; unrevealed; uncle of famous musician **CI*** P*E**E*
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish FE*ICIT*  ****K'*  E**T*-*  **PPE*G**GE* (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** KE*T (**E- C*I*I*)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character B**KE
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *E* T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *TEP***IE  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / WI**  *C**TT (E**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 P**K
474. Original; judge; precided over trial of a cast character (but not main character)  B**CKETT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  *I*G* (E**T*-2)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  GI**E* / T***  W*******
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters **E*  ****E**'  **T*E* (***I*I**  P**TI***)
479. Original; criminal gang leader; used alien tech in crimes C*ET *I***
480. Original; government agent; recurring ally of cast characters  V****E* (E**T*-#8)
481. Original; high school student when last seen; close friend of cast character during teen years J**IE
482. Original; district attorney; questioned main character during his or her trial **E** V** **E*
484. Original; presumed student; nephew of cast character *.J.  *IGG*E
485. Comics; criminal; Robin Annual; could morph hands into blades *********P /  **E*E*E  ****P
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain BE**
487. Original; unrevealed; villager in an African nation  F**I*****
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  *E**IE ****
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  E*I** **CE*TI
490. Original; crime boss; killed by gaseous villain ****  ***BI****
491. Original; government agent; hunted a villain who killed him  *E******
492. Original; unrevealed; killed by parasitic villain *****E*  ***PE-**IFTE*
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  VICKI ******E
494. Original; slave turned spy; tasked with stealing battle plans from an enemy *E*** *C*TT
495. Original; engineer; super-villain tried to take him captive C***
496. Earlier character this continuity; unrevealed; resides in bottled Earth *****'*  E**T*-T**#7 **PPE*G**GE* (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**** C**PE*
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 ***i T***i (**B*T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money JE*** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ***iC *EI*TE*
503. Comics (different first name); CEO; Batman; mother of main character J*** JET
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**F*'* #### *EIN*C****TI**
505. Original; unrevealed; has passing resemblance to now major character but not a true counterpart JE** [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T****E
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  *I**E* **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******** *****E
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character *E*TE* ***E*
511. Comics; CEO; The Power Company; had nannite-created powers BI**** /  J*CK *P*EE*
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. B*T*R*
513. Original; server; played Dungeons & Dragons with cast character ***C*
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** ***TE*
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** FI*KE*
518. Original; high school student; son of a police commissioner *TE*E* F**BE*
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** C*I*
520. Original; unrevealed; childhood bully of major villain JE**E FE*E*IC*
521. Original; senator; initially had anti-alien views ******* C***E
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 *I** W***E*
527. Original; spy of sorts; impersonated cast character W*ITE ***TI** ("**E* ***VE**")
529. Original; unrevealed; grandmother of cast character VI**ET
530. Comics; criminal; first appeared in his own title; this version is an alien convict while the comics version is an alien superhero JE**  [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration E* C***
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact P***TI**E /  BETTE **** ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*** /  G***E GIBB***
535. Original; unrevealed, likely student if any; from a post-Soviet country *IK**I*
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **TE *E***** (**B*T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator **I** K***E* (*I*****E**E)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *I**IG*T
539. Original; investor; invested in an attempt to make a museum **G*
540. Original; unrevealed; husband shot by card themed villain J*** W***I*GT**
541. Original; government agent; electrocuted underwater **E* ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C**E*** *B****    
543. Original; psychologist; kidnapped by group run by villain wanting advice *****E
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother ******* *E**** (E**T*-2)
545. Original; army leader; alien who helped try to take over the Earth T*E C******E*
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ****PE
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*IEF *F *T*FF I* **TI**** CIT*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **VE **CKETT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation **E* F***T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement P**C* /  B***I* ***IK
552. Original; housewife; wife of major villain ***I* **CK****
553. Original; security agent; ex-husband of cast character T**E*
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 *I******
557. Original; high school student; ex-boyfriend of cast character *E** **IT*
558. Original; likely student of any; son of a later superhero *KI* ******I**
559. Original; judge; let main character out on bail C. *CG**VE*
560. Original; construction manager; helped build amusement park *IKE* T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens *I*** B***E
562. Real person; pirate; brought back after death B**CK C*E***
563. Original; child trafficker; kidnapped main character while latter still a kid C***I*E ***G
564. Comics more or less;  Nazi Party member, SS-Standartenführer; Master Comics; enhanced speed, durability, strength K*IEGE*  [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
566. Original; police officer; arrested cast characters for disrespecting him and partner *E*I**
567. Original; company vice president; helped foot bill for free medical event EV** WE**E*
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**E* ***E*'* E**T*-* **PPE*G**GE* (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters KE*I* **GGI**
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 **I*E B**E*
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects B**CK BI*** / *I** C***T**
574. Original; asylum inmate; has drooling problem *B*****
575. Original; research assistant; tried to run tests on cast character *IGE*
576. Original; some sort of special agent; hypnotized after being called in for performance review P*WE**
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** BEE***
578. Original; pastor; lived in Odessa, Texas in 1925 P**E**
579. Original; science centre owner; secretly worked for season main villain ***G *I****
580. Original; unrevealed, likely student if any; has alien for a pet ***** (*PIKE'* ***E*)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK*EI*E*
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 EVE*** *E*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 GIBB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ***I**
587. Original; high school music teacher; surname is a music term ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *PE***
589. Real person; physicist; kidnapped by cast character to help solve a specific problem ***I*E*
590. Original; bounty hunter; tried to collect on a bounty on a main character ****IB**
591. Original; police officer; arrested cast characters for disrespecting him and partner **IT*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman *E** ******
593. Original; army officer; led soldiers in capturing cast characters *IK**I* **K**I*
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*** VE*E*IKT*V
595. Original; nation's president; killed during alien invasion T**VE*E*
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident **ETT C***I** (E**T*-2)
597. Original; secretary for major recurring character (season 1 of series) P***I**
598. Original; judge; precided over trail of main character's mother ****E*B***
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. *I*C**I*'*  **T*E*
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 E*I** P***
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character W*ITE ***TI* ("*I**** C***E")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ***G**** /  ***** *E**I*G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** *I****
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**KE* T***E*
606. Original; criminal; serving a life sentence for two counts of murder PETE* T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  *E*** *EWITT (E**T*-2)
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 / V**E*** J***E*
609. Original; scientist; alien with thorns on his forearms ***** V**E
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** CIT*  ****E* a.k.a.  I***TE ##22 /  *T***E*  **VE*
611. Original; mixed martial artist; affected by totem during tournament F***K  C*EE*
612. Original; police officer; tried to force major character to testify against main character P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *IP **** /  ****E**  **GE**
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J**E W****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past P*I*CE C****E*
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*TE K**E (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake **I** ***K*V
618. Original; money launderer; worked for crimelord in flashbacks P**T* F*IE*KI*
619. Original; unrevealed if any; vampire **E**E
620. Original; nation's President; took on role after predecessor forced to resign P*I* B*KE*
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy B**T*V *EC***IC
622. Comics; assassin; first appeared in own series; crew teamed with major villain *I*E*CE* / *****
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*E*E** *E*KE*
624. Original; unrevealed, likely student; cast character's first cousin once removed C**I*
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation F*****T / **I* 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*E ***** /  **VIE* *EE*
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 FEI**
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J**ET
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object **EI*TE* C**W*E*
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***I* *I*G* (*I*****E**E)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *EI****K
633. Comics; security agent, police officer; Robin; murdered cast character's father *ET***T** /  *IG*E* **B*E*
634. Original; unrevealed; has fragokinesis power VICKIE B**E*
635. Original; unrevealed; kidnapped by legacy villain W*IT*E* **TC*I****
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower GE*E ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *E* **E**E*
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** **G*E (**B*T)
640. Original; special agent of sorts; awarded Agent of the Month *EI* *C*EI*
641. Original; unrevealed; father of cast character P*** ***
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**-E*
643. Original; bus driver, criminal; stomach slashed by major villain KEI*** ****E
644. Original; receptionist; tried unsuccessfully to stop main character's arrival JE** [LOCKED; both remaining letters the same; letters found so far: Letters/numbers found so far: BCEGIKLPTW2780]
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  *E*E C**PE*TE*
646. Original; unrevealed; gained powers in an experiment J**PE* T***E*
647. Original; criminal; right-hand man for recurring villain **ECK
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero **PE**** / K**-E* (E**T*- T**22)
649. Real person; theatrical producer; oversaw major playwright's work P****P *E*****E
651. Original; councilman; ally of major villain K***E**
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future K*I*E
653. Original; bartender; ex-girlfriend of main character *E*G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*I* K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TTE* *****
656. Original; doctor; assigned to care for main character ****E* ****IG*E*
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CKE**IE
659. Original; research scientist; killed after procuring a map E**** **GE**
660. Original; college student; member of fraternity and convention attendee K**E FE**K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war ***E*I* J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective *E** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  *E**ITT ***I*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy B**CK**T / F***** GIB***
665. Original; editor-in-chief; succeeded comics based character in role  ****E* F**WE**
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** B***E
667. Real person; astronaut; major villain impersonated him J*** *WIGE*T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island V*** VE*E*IKT*V
669. Original; unrevealed; alien with fire powers I*FE**I** *TT*CKE*
670. Original; anchorwoman; often reports on main character's activities **** *EWITT
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** P**G*I*
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal E* G*T*
674. Original; unrevealed; sibling of major villain ***I* *W*E*'* *I*TE*
675. Original; police officer; villain attached bomb to chest *I****
676. Original; criminal; robbed blood banks for sustenance *I*** W*IT*
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. *IG*T /  KI*I** ****I
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***TE* J*I*E* / "C*** ***PE*"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*B**
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband I*I* WE*T-***E* (E**T*-2)
682. Original; inmate; magical fugitive who loves to sing *G*E /  F*E*E*IC
683. Original; unrevealed; fan of major character's writing ***I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character *****ITE P***CE G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *TEI*
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous BE*TIE /  *E*B**T GE**GE WE***
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C**P*C*B**
688. Original; unrevealed; accused of being a witch J**E **WT****E
689. Original; music student graduate; attended University of Cincinnati V**IT* *IP***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major villain *****G*PT***
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J***E*
692. Original; executive staffer; worked for villain's parents VIT* [LOCKED; Letters/numbers found at time of locking: BCEFGIKLPTVW2780]
693. Original; sorcereress cult member; mother of cast character **T**IE **G*E
694. Original; scientist; created super-soldiers with powers of specific villain *ET***CT**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion C***W***I*
696. Original; night club owner; main character slept with his fiancée *** F***E*
697. Original; executive employee; committed acts of industrial espionage PETE* 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 ***GE* /  WI**ICK ***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 /  *E*** *EWITT
703. Original; security agent, criminal; helped frame cast characters *I**E*
704. Original; scientist; wife of major event character **EE*
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain VI*GI*
706. Original; singer; participated in reality TV competition ***CÉ*
708. Original; football player running back; testified against murderous brother *P**** TE****
709. Original; media employee; mind controlled into committing suicide KE***
710. Original; scientist; wife of someone who was impersonated for a long time TE** ***G**
712. Original; unrevealed; was seen as candidate for human trials *E**ICK *I*****
713. Original; director; worked for major studio in 1937 ****** C**E***
714. Original; police officer; killed in an ambush J**E*
715. Real person; musician; strand of hair snagged by cast character J**I* J*P*I*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character **E* ***VE**' **T*E* (***I**I* P**TI***)
717. Original; scientist; ally of main character's mother JET**I** I****T*IE* *E**T***GI*T (note: while not named in the show souce sources claim she's **. T*V*; I'll accept either name)
718. Original; unrevealed; version of another character, attended a World's Fair E*IT* 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*E*
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld CECI*E ***T** (*I*****E**E)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. E*G** ****E*
722. Original; criminal; kidnapped people in a revenge attempt F***** ***I*
723. Original; federal agent; killed by cultists *E***
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***Te
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 **E*I *E***V
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*BE*-W***** /  *****  W***I*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 WE**T*E* WITC* /  J***** J*CK**

 

505. Jenn

564. Krieger

692. Vito

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 the letter L.

Letters/numbers found so far: BCEFGIJKLPTVW2780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba; movie nod is to Apocalypse Now KILG**E
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows *E*C* G***E*
370. Original; plantation and slave owner; fought zombie soldiers ***IEL C*LLI**
371. Original; judge; killed by someone whose trial she presided over **E*E**  **W***
372. Original; high school teacher; statutory rapist ****EL  BE*****
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  *****  B*I*GE
374. Original; cultist; escaped a raid on boss' lair initially  *C*L*TE /  C**IG
376. Original; weapons dealer; led a street gang  B****  ***ETTI
377. Original; firefighter; fire department including her is recurring  T**E** /  **LLE*
378. Original; engineer; reported co-worker to boss, causing her to be fired BILL  C**LI**E
379. Original; CEO; eyes were gouged out E***  C**TELL****
380. Original; student if any; parents killed by assassin  T**L**  ****E
381. Real person; artist; known for surreal art  **L***** **Lí
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  **I**
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  ****** ***E**
384. Original; firefighter; got doused in turpentine ***** *E L* VEG*
385. Real person; newscaster; played by herself, though real person reports out of a different city  LE*** *G**E*
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ****I***  **E*L***E WELL*'  FIFT* E*-WIFE ( E**T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**TLE /  ****ELL  GL*****
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character W*LF *PI*E* / E***  BL*KE
389. Original; attorney; represented the main villain of the season  FIT*****I*
390. Original; unrevealed; flirted with cast character I*** ***E
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K****I ***C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **I*****  **I******
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*ILLE***  B****E*
394. Original; high school student; plays football and likes to drink C**E*  WELL*IT*
396. Original; Italian restaurant owner; homophobic  *LE*******
397. Original; criminal; blackmail and threatened the life of someone CL**  *T**LE*
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  *ITC*  ***E**
399. Original; pizza place owner; hates aliens  ****I**
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*E***  **I*ICK
401. Original; criminal; used an electrical blaster  KIL*V**T /  *IC**EL  K**T*I***
402. Original; student turned assassin; kidnapped by extreme sect  T*LIB** / *E*I  **TIF**
403. Original; government agent; worked with the main villain of the season  J*****  PIE*CE
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 *WE* P***
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths **** (E**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  L*CI** F** (*.I.)
409. Original; personal assistant; host of alien consciousness I*** ****E*
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages F*E**I*
413. Real person; musician; performed at night club opening and was played by himself *TE*E **KI
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain BE**
415. Original; spy; proficient in air radio terminology *L** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ****I*** **E*L***E WELL*' F***T* E*-WIFE (E**T*-T**#0)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C******** ***TE*
418. Original; police detective; took part in getting innocents convicted *T* ****ELL*
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** **FF***
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** T*E ***CE*E*
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *TEI*
422. Original; crime syndicate member; stole liquid nitrogen VI*GIL GETT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. WELL* (E**T*-2#)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character F*E* C****
425. Original; unrevealed; uncle of cast character *IC*
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** E*I***
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth E**IE *LICK (E**T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character ***** F**E*T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers **VIET FI*E*T*** (V*LE*TI** V**T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* *EI*****T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** *EEG**
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 E*C***T*E**
435. Real person; Viking warlord; thought that toy from her future had divine messages LEIF E*IK****
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*** CIT* P*LICE *EP**T*E*T *FFICE*
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C*L *EVIT*
440. Original; unrevealed; mother of cast characters ****EE* T****I
441. Comics; mayor; Green Arrow; killed by rogue vigilante group *LT***
442. Original; high school student; family moved due to father's imprisonment TEG** WICK*E*
443. Original; corportation founder, inventor; main villain of a season; likes to sing BI***P
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour IC*I** ******I**
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline F*E*** *E*E**
446. Original; unrevaled; fostered alien child for a time **** F***
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*LIE L**E  I**** (E**T*- T**22)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes VICT** **CE*TI
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother *L*** (L-C***)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain *E*
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J***IE
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  F*E*** /  *LE**  *IVE**
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J***ETT P**KE*
454. Earlier character this continuity; unrevealed; appeared after solving an equation ****I***  WELL* (E**T*- T**2)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth LI*** P**K
456. Original; prison warden; fired for misuse of prisoners W**TT K*TE
457. Original; personal accountant; is a demon and possibly hasn't been to Earth TIBE*I**
458. Real person; poet, playwright; heroes visited him to get a piece of a loom; extremely famous WILLI** ***KE*PE**E
459. Original; high school graduate; became pregnant with a time traveller's baby *LI [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
460. Original; unrevealed; mother of a cast character I**BEL **L
461. Original; unrevealed; had an emotional affair in a VR world JE**I*E* B*TE*
462. Original; pilot of sorts; was saved from time pirates by heroes E*E B***E*
463. Apparently original, though related to real person; unrevealed; uncle of famous musician L*CI*** P*E**E*
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish FElICIT*  ****K'*  E**T*-*  **PPELG**GE* (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** KE*T (**E- C*I*I*)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character BL*KE LI [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *EL T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *TEP***IE  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T***** / WI**  *C**TT (E**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*L****
473. Original; psychologist; treated a cast character P**K
474. Original; judge; precided over trial of a cast character (but not main character)  B**CKETT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  *I*G* (E**T*-2)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  GI**E* / T***  W*******
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters *LE*  ****E**'  **T*E* (***I*I**  PL*TI***)
479. Original; criminal gang leader; used alien tech in crimes C*ET *I***
480. Original; government agent; recurring ally of cast characters  V****E* (E**T*-#8)
481. Original; high school student when last seen; close friend of cast character during teen years J**IE
482. Original; district attorney; questioned main character during his or her trial *LE** V** **E*
484. Original; presumed student; nephew of cast character *.J.  *IGGLE
485. Comics; criminal; Robin Annual; could morph hands into blades *********P /  **ELE*E  ****P
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain BE** [LOCKED; this one should have been labeled locked before, so letters found at time of locking exclude a few recent finds: BCEGIJKPTW2780]
487. Original; unrevealed; villager in an African nation  F**I***L*
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  LE*LIE L***
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  E*IL* **CE*TI
490. Original; crime boss; killed by gaseous villain ****  ***BI****
491. Original; government agent; hunted a villain who killed him  *E***L**
492. Original; unrevealed; killed by parasitic villain *****E*  ***PE-**IFTE*
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  VICKI ******E
494. Original; slave turned spy; tasked with stealing battle plans from an enemy *E*** *C*TT
495. Original; engineer; super-villain tried to take him captive C**L
496. Earlier character this continuity; unrevealed; resides in bottled Earth ***L*'*  E**T*-T**#7 **PPELG**GE* (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**L* C**PE*
498. Original; some sort of criminal boss; mother of cast character's children K**L*
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos ***i T***i (**B*T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money JE*** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality ***iC *EI*TE*
503. Comics (different first name); CEO; Batman; mother of main character and cast character herself J*** JET
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**F*'* #### *EIN*C****TI**
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T****E
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  LI**E* L*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******** *****E
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character *E*TE* **LE*
511. Comics; CEO; The Power Company; had nannite-created powers BI**** /  J*CK *P*EE*
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin *. B*TL*R
513. Original; server; played Dungeons & Dragons with cast character ***C*
514. Comics; district attorney; The Flash; prosecuted main character in trial ***** *L*TE*
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** FI*KEL
518. Original; high school student; son of a police commissioner *TE*E* F**BE*
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** C*I*
520. Original; unrevealed; childhood bully of major villain JE**E FE*E*IC*
521. Original; senator; initially had anti-alien views ******* C***E
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth V*L [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
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 LI** W***E*
527. Original; spy of sorts; impersonated cast character W*ITE ***TI** ("*LE* ***VE**")
529. Original; unrevealed; grandmother of cast character VI*LET [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration EL C***
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact PL**TI**E /  BETTE **** ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*** /  G***E GIBB***
535. Original; unrevealed, likely student if any; from a post-Soviet country *IK**IL
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **TE *E***** (**B*T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator **I** K***E* (*I*****E**E)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  *I**IG*T
539. Original; investor; invested in an attempt to make a museum *LG*
540. Original; unrevealed; husband shot by card themed villain J*** W***I*GT**
541. Original; government agent; electrocuted underwater *LE* ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C**E*** *B****    
543. Original; psychologist; kidnapped by group run by villain wanting advice **L**E
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother **L**L* *E*L** (E**T*-2)
545. Original; army leader; alien who helped try to take over the Earth T*E C******E*
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes ****
547. Original; actor; posed as father of cast character ***** ****PE
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*IEF *F *T*FF I* **TI***L CIT*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **VE **CKETT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation *LE* F***T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement P**C* /  B***I* **LIK
552. Original; housewife; wife of major villain L**I* L*CK****
553. Original; security agent; ex-husband of cast character T*LE*
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 **** L**CE (CL**E)
556. Mythology; likely none; Greek myths; known to party at college fraternities *I******
557. Original; high school student; ex-boyfriend of cast character *E** **IT*
558. Original; likely student of any; son of a later superhero *KI* ******I**
559. Original; judge; let main character out on bail C. *CG**VE*
560. Original; construction manager; helped build amusement park *IKE* T.
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens *I*** B***E
562. Real person; pirate; brought back after death BL*CK C*E***
563. Original; child trafficker; kidnapped main character while latter still a kid C***I*E ***G
566. Original; police officer; arrested cast characters for disrespecting him and partner *E*I**
567. Original; company vice president; helped foot bill for free medical event EV** WE**E*
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J**E* *L*E*'* E**T*-* **PPELG**GE* (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters KE*I* **GGI**
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 *LI*E B*LE*
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects BL*CK BI*** / *I** C***T**
574. Original; asylum inmate; has drooling problem *B*****
575. Original; research assistant; tried to run tests on cast character *IGEL [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
576. Original; some sort of special agent; hypnotized after being called in for performance review P*WELL [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** BEE***
578. Original; pastor; lived in Odessa, Texas in 1925 P**E**
579. Original; science centre owner; secretly worked for season main villain ***G *ILL**
580. Original; unrevealed, likely student if any; has alien for a pet *L*** (*PIKE'* ***E*)
581. Original; gangster; skipped town to avoid main character ***C** *T*CK*EI*E*
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 EVEL** *E*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 GIBB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband ***I**
587. Original; high school music teacher; surname is a music term ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *PE***
589. Real person; physicist; kidnapped by cast character to help solve a specific problem; think Bohemian Rhapsody **LILE*
590. Original; bounty hunter; tried to collect on a bounty on a main character ****IB*L
591. Original; police officer; arrested cast characters for disrespecting him and partner **IT*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman *E** L*****
593. Original; army officer; led soldiers in capturing cast characters *IK**IL **K**I*
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*** VE*E*IKT*V
595. Original; nation's president; killed during alien invasion T**VELE*
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident **ETT C*LLI** (E**T*-2)
597. Original; secretary for major recurring character (season 1 of series) P**LI**
598. Original; judge; precided over trail of main character's mother ****ELB***
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom **. *I*CL*I*'*  **T*E*
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 E*IL* P***
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character W*ITE ***TI* ("*I**** C***E")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others ***G**L* /  ***** *EL*I*G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** *ILL**
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**KE* T***E*
606. Original; criminal; serving a life sentence for two counts of murder PETE* T*******
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  *E*** *EWITT (E**T*-2)
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 BL*CK / V**E*** J***E*
609. Original; scientist; alien with thorns on his forearms ***** V**E
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** CIT*  *L**E* a.k.a.  I***TE ##22 /  *T**LE*  **VE*
611. Original; mixed martial artist; affected by totem during tournament F***K  C*EE*
612. Original; police officer; tried to force major character to testify against main character P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *IP **** /  ****ELL  **GE**
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J**E W****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past P*I*CE C***LE*
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*TE K**E (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake **I** ***K*V
618. Original; money launderer; worked for crimelord in flashbacks P**T* F*IE*KI*
619. Original; unrevealed if any; vampire **ELLE
620. Original; nation's President; took on role after predecessor forced to resign P*IL B*KE*
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy B**TV* *EC***IC
622. Comics; assassin; first appeared in own series; crew teamed with major villain *ILE*CE* / *****
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*E*E** *E*KEL
624. Original; unrevealed, likely student; cast character's first cousin once removed C**I*
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation F*LL**T / **IL 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*E ***** /  **VIE* *EE*
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 FEI**
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J**ET
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object *LEI*TE* C**WLE*
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***I* *I*G* (*I*****E**E)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *EI****K
633. Comics; security agent, police officer; Robin; murdered cast character's father *ET***T** /  *IG*E* **BLE*
634. Original; unrevealed; has fragokinesis power VICKIE B*LE*
635. Original; unrevealed; kidnapped by legacy villain W*IT*E* **TC*I****
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower GE*E ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *E* **ELLE*
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** L*G*E (**B*T)
640. Original; special agent of sorts; awarded Agent of the Month *EIL *C*EIL
641. Original; unrevealed; father of cast character P**L **L
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**-EL
643. Original; bus driver, criminal; stomach slashed by major villain KEI*** ****E
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  *E*E C**PE*TE*
646. Original; unrevealed; gained powers in an experiment J**PE* T***E*
647. Original; criminal; right-hand man for recurring villain **ECK
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero **PE**** / K*L-EL (E**T*- T**22)
649. Real person; theatrical producer; oversaw major playwright's work P**L*P *E**L**E
651. Original; councilman; ally of major villain K*LLE**
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future KLI*E [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
653. Original; bartender; ex-girlfriend of main character *E*G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*IL K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TTE* *****
656. Original; doctor; assigned to care for main character ****EL ****IG*E*
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker **CKE**IE
659. Original; research scientist; killed after procuring a map E**** **GE**
660. Original; college student; member of fraternity and convention attendee K*LE FE**K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war **LEFIC J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective *E** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  *E**ITT ***I*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy BL*CK**T / F***** GIB***
665. Original; editor-in-chief; succeeded comics based character in role  ****EL F**WELL
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** B***E
667. Real person; astronaut; major villain impersonated him J*** *WIGE*T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island Vl** VE*E*IKT*V
669. Original; unrevealed; alien with fire powers I*FE**I** *TT*CKE*
670. Original; anchorwoman; often reports on main character's activities **** *EWITT
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain C**** G*L*
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets T*E P*LG*I*
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal EL G*T*
674. Original; unrevealed; sibling of major villain **LI* *W*E*'* *I*TE*
675. Original; police officer; villain attached bomb to chest *ILC**
676. Original; criminal; robbed blood banks for sustenance *IL** W*ITE
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. LIG*T /  KI*I** ****I
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts ***TE* J*ILE* / "C**L ***PE*"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*BL*
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband I*I* WE*T-*LLE* (E**T*-2)
682. Original; inmate; magical fugitive who loves to sing *G*E /  F*E*E*IC
683. Original; unrevealed; fan of major character's writing ***I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character *****ITE P*L*CE G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *TEI*
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous BE*TIE /  *E*BE*T GE**GE WELL*
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C**P*C*B**
688. Original; unrevealed; accused of being a witch J**E **WT****E
689. Original; music student graduate; attended University of Cincinnati V**IT* *IP***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major/cast villain ***L*G*PTL**
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J***E*
693. Original; sorcereress cult member; mother of cast character **T*LIE L*G*E
694. Original; scientist; created super-soldiers with powers of specific villain *ET***CT**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion C***W*LLI*
696. Original; night club owner; main character slept with his fiancée *** F*LLE*
697. Original; executive employee; committed acts of industrial espionage PETE* 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 ***GE* /  WI**ICK ***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 /  *E*** *EWITT
703. Original; security agent, criminal; helped frame cast characters *ILLE*
704. Original; scientist; wife of major event character **EE*
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain VI*GIL [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
706. Original; singer; participated in reality TV competition ***CÉ*
708. Original; football player running back; testified against murderous brother *P*LL* TE*L**
709. Original; media employee; mind controlled into committing suicide KELL*  [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
710. Original; scientist; wife of someone who was impersonated for a long time TE** ***G**
712. Original; unrevealed; was seen as candidate for human trials *E**ICK *I*****
713. Original; director; worked for major studio in 1937 ****L* C*LE***
714. Original; police officer; killed in an ambush J**E*
715. Real person; musician; strand of hair snagged by cast character J**I* J*PLI*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character *LE* ***VE**' **T*E* (***I**I* PL*TI***)
717. Original; scientist; ally of main character's mother JET**I** I****T*IE* *E**T*L*GI*T (note: while not named in the show souce sources claim she's **. T*V*; I'll accept either name)
718. Original; unrevealed; version of another character, attended a World's Fair E*IT* 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*E*
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld CECILE ***T** (*I*****E**E)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. E*G** ****E*
722. Original; criminal; kidnapped people in a revenge attempt F***** ***I*
723. Original; federal agent; killed by cultists *E***
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***Te
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 *LE*I LE***V
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*BE*-W***** /  L****  W***I*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 WE**T*E* WITC* /  J**L** 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 the letter M.

Letters/numbers found so far: BCEFGIJKLMPTVW2780

368. Original, but name is a nod to a non-DC movie character; military general; wanted the President to fire a missile at Cuba; movie nod is to Apocalypse Now KILG**E
369. Earlier show; security head turned terrorist; Superman: The Animated Series; works for a major villain from the comics on both shows ME*C* G***E*
370. Original; plantation and slave owner; fought zombie soldiers ***IEL C*LLI**
371. Original; judge; killed by someone whose trial she presided over **E*E**  **W***
372. Original; high school teacher; statutory rapist **M*EL  BE*****
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  M****  B*I*GE
374. Original; cultist; escaped a raid on boss' lair initially  *C*L*TE /  C**IG
376. Original; weapons dealer; led a street gang  B****  M**ETTI
377. Original; firefighter; fire department including her is recurring  T*ME**  **LLE*
378. Original; engineer; reported co-worker to boss, causing her to be fired BILL  C**LI*LE
379. Original; CEO; eyes were gouged out E***  C**TELL****
380. Original; student if any; parents killed by assassin  T**L**  M***E
381. Real person; artist; known for surreal art  **L***** **Lí
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  **I**
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  M**T** **ME**
384. Original; firefighter; got doused in turpentine ***** *E L* VEG*
385. Real person; newscaster; played by herself, though real person reports out of a different city  LE*** *G**E*
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ****I***  **E*L***E WELL*'  FIFT* E*-WIFE ( E**T*- T**##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**TLE /  ****ELL  GL*****
388. Comic; art thief, museum editor; Batwoman; childhood friend of major character W*LF *PI*E* / E***  BL*KE
389. Original; attorney; represented the main villain of the season  FIT*M**TI*
390. Original; unrevealed; flirted with cast character I*M* ***E
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K***MI ***C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **I*****  **IM*****
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*ILLE*M*  B****E*
394. Original; high school student; plays football and likes to drink C**E*  WELL*IT*
396. Original; Italian restaurant owner; homophobic  *LE*******
397. Original; criminal; blackmail and threatened the life of someone CL**  *T**LE*
398. Mostly original; surname possible reference to comics character and definitely to real person; arms dealer; possibly Swamp Thing; undead villain  MITC*  **ME**
399. Original; pizza place owner; hates aliens  M***IM*
400. Original; possible but unconfirmed connection to earlier character; prison guard; active in 2049  T*E***  **I*ICK
401. Original; criminal; used an electrical blaster  KIL*V**T /  MIC**EL  K**T*I***
402. Original; student turned assassin; kidnapped by extreme sect  T*LIB** / ME*I  **TIF**
403. Original; government agent; worked with the main villain of the season  J*****  PIE*CE
404. Original; field agent; removed a villain's stinger from their victim's body ***TM***
406. Original; high school student; son of a recurring villain *WE* P***
407. Original but looks like someone from another Earth previously seen; assistant geologist; travelled between Earths M*** (E**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  L*CI** F** (*.I.)
409. Original; personal assistant; host of alien consciousness I*M* ****E*
410. Real person; Viking shieldmaiden; thought that toy from her future had divine messages F*E**I*
413. Real person; musician; performed at night club opening and was played by himself *TE*E **KI
414. Comics (has different code name with same meaning); assassin; possibly Green Arrow; his team was allied with major villain BE**
415. Original; spy; proficient in air radio terminology *L** ******
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ****I*** **E*L***E WELL*' F***T* E*-WIFE (E**T*-T**#0)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C******** ***TE*
418. Original; police detective; took part in getting innocents convicted *T* ****ELL*
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** **FF***
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ****** T*E ***CE*E*
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character ***** *TEI*
422. Original; crime syndicate member; stole liquid nitrogen VI*GIL GETT*
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. WELL* (E**T*-2#)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character F*E* C****
425. Original; unrevealed; uncle of cast character *IC*
427. Real person; presumed inventor and businessman going by real world version; replaced by robot T***** E*I***
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth E**IE *LICK (E**T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character M**** F**E*T
430. Comics (comics version has different codename); scientist; Showcase; hero in comics, villain in show with another hero's powers **VIET FI*E*T**M (V*LE*TI** V**T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline *J**G* *EI*****T
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J*** *EEG**
433. Original; accountant; actions led to extortion, kidnapping, and murder ****** B*CKM**
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 E*C***T*E**
435. Real person; Viking warlord; thought that toy from her future had divine messages LEIF E*IK****
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother T**M*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**M CIT* P*LICE *EP**TME*T *FFICE*
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C*L *EVIT*
440. Original; unrevealed; mother of cast characters ****EE* T****I
441. Comics; mayor; Green Arrow; killed by rogue vigilante group *LTM**
442. Original; high school student; family moved due to father's imprisonment TEG** WICK*EM
443. Original; corportation founder, inventor; main villain of a season; likes to sing BI***P
444. Original; doctor, metalsmith; outfitted cast character in Samurai armour IC*I** **M***I**
445. Original, though name evokes movie characters; high school graduate; wrongly believed to be a killer in one timeline F*E*** ME*E**
446. Original; unrevaled; fostered alien child for a time **** F***
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*LIE L**E  I**** (E**T*- T**22)
448. Original, though surname may be nod to real person; stevedore; discovered company's CEO was taking drug smuggling bribes VICT** **CE*TI
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother *L*** (L-C***)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain *E*
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J***IE
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  F*E*** /  *LE**  *IVE**
453. Comics; prison chief psychiatrist, criminal; The Flash; commaneded guards to inject main character with truth serum J***ETT P**KE*
454. Earlier character this continuity; unrevealed; appeared after solving an equation ****I***  WELL* (E**T*- T**2)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth LI*** P**K
456. Original; prison warden; fired for misuse of prisoners W**TT K*TE
457. Original; personal accountant; is a demon and possibly hasn't been to Earth TIBE*I**
458. Real person; poet, playwright; heroes visited him to get a piece of a loom; extremely famous WILLI*M ***KE*PE**E
459. Original; high school graduate; became pregnant with a time traveller's baby *LI [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
460. Original; unrevealed; mother of a cast character I**BEL **L
461. Original; unrevealed; had an emotional affair in a VR world JE**I*E* B*TE*
462. Original; pilot of sorts; was saved from time pirates by heroes E*E B***E*
463. Apparently original, though related to real person; unrevealed; uncle of famous musician L*CI*** P*E**E*
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish FElICIT*  *M**K'*  E**T*-*  **PPELG**GE* (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  ****T*** KE*T (**E- C*I*I*)
467. Original; unrevealed, possible high school student when last seen given age; friend of cast character BL*KE LI [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version *EL T***
470. Comics; educational facility graduate; Detective Comics; daughter of a super-villain  *TEP***IE  B****
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T**M** / WI**  *C**TT (E**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*L****
473. Original; psychologist; treated a cast character P**K
474. Original; judge; precided over trial of a cast character (but not main character)  B**CKETT
475. Comics; criminal; The Flash Secret Files and Origins; counterpart of a police captain  *I*G* (E**T*-2)
477. Comics; iron works employee turned criminal; The Flash: Iron Heights; super-villain killed and then brought back briefly as undead foe  GI**E* / T***  W*******
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters *LE*  ****E**'  **T*E* (***I*I**  PL*TI***)
479. Original; criminal gang leader; used alien tech in crimes C*ET MI*E*
480. Original; government agent; recurring ally of cast characters  V****E* (E**T*-#8)
481. Original; high school student when last seen; close friend of cast character during teen years J**IE
482. Original; district attorney; questioned main character during his or her trial *LE** V** **E*
484. Original; presumed student; nephew of cast character *.J.  *IGGLE
485. Comics; criminal; Robin Annual; could morph hands into blades *********P /  **ELE*E  ****P
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain BE** [LOCKED; this one should have been labeled locked before, so letters found at time of locking exclude a few recent finds: BCEGIJKPTW2780]
487. Original; unrevealed; villager in an African nation  F**I***L*
488. Comics; pesonal assistant; Action Comics; alien possessing an Earth woman  LE*LIE L***
489. Original, though surname may be nod to real person; unrevealed; filed suit against man her father was going to testify against  EMIL* **CE*TI
490. Original; crime boss; killed by gaseous villain ****  ***BI****
491. Original; government agent; hunted a villain who killed him  *E***L**
492. Original; unrevealed; killed by parasitic villain ****ME*  ***PE-**IFTE*
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  VICKI ******E
494. Original; slave turned spy; tasked with stealing battle plans from an enemy *E*** *C*TT
495. Original; engineer; super-villain tried to take him captive C**L
496. Earlier character this continuity; unrevealed; resides in bottled Earth ***L*'*  E**T*-T**#7 **PPELG**GE* (one letter has accent)
497. Original; counseling director; disliked for strict methods in running camp P**L* C**PE*
498. Original; some sort of criminal boss; mother of cast character's children K**L*
499. Earlier show (indirectly); timeline protector; The Secrets of Isis; counterpart of sorts of cast character, though unlike main version has tattoos ***i T***i (**B*T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money JE*** *****
502. Earlier show; unrevealed, arguably some sort of teacher; Batman: The Brave and the Bold; trapped someone in an artificial reality M**IC MEI*TE*
503. Comics (different first name); CEO; Batman; mother of main character and cast character herself J*** JET
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**F*'* #### *EIN*C****TI**
506. Comics; presumed criminal; Nightwing; helped stop a drone strike T****E
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  LI**E* L*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******** *****E
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character *E*TE* M*LE*
511. Comics; CEO; The Power Company; had nannite-created powers BI*M** /  J*CK *P*EE*
512. Original; asylum warden and chief psychiatrist; poerformed experiments using fear toxin M. B*TLER [LOCKED; letters found at time of locking: BCEFGIJKLMPTVW2780]
513. Original; server; played Dungeons & Dragons with cast character M**C*
514. Comics; district attorney; The Flash; prosecuted main character in trial **T** *L*TE*
516. Original; couples counselor and psychiatrist; counselled cast characters prior to their marriage ****** FI*KEL
518. Original; high school student; son of a police commissioner *TE*E* F**BE*
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth ***** C*I*
520. Original; unrevealed; childhood bully of major villain JE**E FE*E*IC*
521. Original; senator; initially had anti-alien views M****** C***E
522. Original; nation's President; gave a speech on a late hero ****
523. Original; unrevealed, possible student; alien who likely never visited Earth V*L [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
524. Original; event coordinator and moderator; arranged romance novel convention in Seattle T*MM*
525. Comics; police sergeant and task force leader turned criminal; 1st Issue Special; led an anti-vigilate task force before going rogue LI** W***E*
527. Original; spy of sorts; impersonated cast character W*ITE M**TI** ("*LE* ***VE**")
529. Original; unrevealed; grandmother of cast character VI*LET [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
531. Original, but possible nod to real person; wrestler and film star; success affected by a 1961 aberration EL C***
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact PL**TI**E /  BETTE **** ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*** /  G**CE GIBB***
535. Original; unrevealed, likely student if any; from a post-Soviet country MIK**IL
536. Comics (indirectly); timeline protector; Justice Society of America; has super strength and durability **TE *E***** (**B*T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator **I** K**BE* (MI****VE**E)
538. Possibly comics, with slightly different spelling; terrorist; Superwoman; powerful entity from an unknown planet  MI**IG*T
539. Original; investor; invested in an attempt to make a museum *LG*
540. Original; unrevealed; husband shot by card themed villain J*** W***I*GT**
541. Original; government agent; electrocuted underwater *LE* ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C*mE*** *B**M*    
543. Original; psychologist; kidnapped by group run by villain wanting advice M*L**E
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother M*L**LM ME*L** (E**T*-2)
545. Original; army leader; alien who helped try to take over the Earth T*E C*MM***E*
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes M***
547. Original; actor; posed as father of cast character ***** ****PE
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*IEF *F *T*FF I* **TI***L CIT*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father **VE **CKETT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation *LE* F***T
551. Comics; reformed criminal; The Flash; powers include telephathy, empathy, fear inducement, illusion inducement P**C* /  B***I* M*LIK
552. Original; housewife; wife of major villain L**I* L*CK****
553. Original; security agent; ex-husband of cast character T*LE*
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 **** L**CE (CL**E)
556. Mythology; likely none; Greek myths; known to party at college fraternities *I******
557. Original; high school student; ex-boyfriend of cast character *E** *MIT*
558. Original; likely student of any; son of a later superhero *KI* **M***I**
559. Original; judge; let main character out on bail C. MCG**VE*
560. Original; construction manager; helped build amusement park MIKE* T.  [LOCKED; letters found at time of locking: BCEFGIJKLMPTVW2780]
561. Original; bartender, alien rights activist; ran group therapy sessions for aliens *I*** B***E
562. Real person; pirate; brought back after death BL*CK C*E***
563. Original; child trafficker; kidnapped main character while latter still a kid C***I*E ***G
566. Original; police officer; arrested cast characters for disrespecting him and partner ME*I**
567. Original; company vice president; helped foot bill for free medical event EV** WE**E*
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J*ME* *L*E*'* E**T*-* **PPELG**GE* (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters KE*I* **GGI**
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 *LI*E B*LE*
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects BL*CK BI*** / MI** C***T**
574. Original; asylum inmate; has drooling problem *B****M
575. Original; research assistant; tried to run tests on cast character *IGEL [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
576. Original; some sort of special agent; hypnotized after being called in for performance review P*WELL [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ****** BEE***
578. Original; pastor; lived in Odessa, Texas in 1925 P**E**
579. Original; science centre owner; secretly worked for season main villain ***G MILL**
580. Original; unrevealed, likely student if any; has alien for a pet *L*** (*PIKE'* ***E*)
581. Original; gangster; skipped town to avoid main character M**C** *T*CK*EIME*
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 EVEL** *E*T
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car M** **G
585. Original; police officer; seen at a crime scene caused by two super-villains GIBB***
586. Comics; queen; Action Comics; alien who felt that a superhero was the only one worthy of becoming her husband M**IM*
587. Original; high school music teacher; surname is a music term ****P
588. Comics; Linguistics and Semiotics teacher, cultist; Worlds' Finest; left one cult but cultists tried to force her into another cult T**** *PE***
589. Real person; physicist; kidnapped by cast character to help solve a specific problem; think Bohemian Rhapsody **LILE*
590. Original; bounty hunter; tried to collect on a bounty on a main character ****IB*L
591. Original; police officer; arrested cast characters for disrespecting him and partner *MIT*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman *E** L*M***
593. Original; army officer; led soldiers in capturing cast characters MIK**IL **K**I*
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*** VE*E*IKT*V
595. Original; nation's president; killed during alien invasion T**VELE*
596. Slightly earlier (same episode) character this continuity; unrevealed; killed a cast character's father in a drunk driving accident **ETT C*LLI** (E**T*-2)
597. Original; secretary for major recurring character (season 1 of series) P**LI**
598. Original; judge; precided over trail of main character's mother M***ELB***
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom M*. *I*CL*I*'*  M*T*E*
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 E*IL* P***
602. Original; spy of sorts; posed as senator; attempted to assassinate cast character W*ITE M**TI* ("MI**** C***E")
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others *M*G**L* /  ***** *EL*I*G**
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** *ILL**
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**KE* T***E*
606. Original; criminal; serving a life sentence for two counts of murder PETE* T**M****
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  *E*** *EWITT (E**T*-2)
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 BL*CK / V**E*** J***E*
609. Original; scientist; alien with thorns on his forearms ***** V**E
610. Comics; serial killer; The Fox and the Crow (real name), Green Arrow (code name); obsessed with main character's earliest vigilante persona *T** CIT*  *L**E* a.k.a.  I*M*TE ##22 /  *T**LE*  **VE*
611. Original; mixed martial artist; affected by totem during tournament F***K  C*EE*
612. Original; police officer; tried to force major character to testify against main character P. P**K*
613. Comics; assassin, CEO; Young Justice; created an enormous destructive tidal wave *IP **** /  ****ELL  **GE**
614. Original; newswoman; interviewed counsellor on anti-vigilantism bill J**E W****
615. Real person; royalty (exact type considered part of name); targeted by real life threat from the past P*I*CE C***LE*
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*TE K**E (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake B*I** M**K*V
618. Original; money launderer; worked for crimelord in flashbacks P**T* F*IE*KI*
619. Original; unrevealed if any; vampire **ELLE
620. Original; nation's President; took on role after predecessor forced to resign P*IL B*KE*
621. Original; bodyguard, plus another job that's part of the answer; apologized to main character after initially believing him an enemy B**TV* MEC***IC
622. Comics; assassin; first appeared in own series; crew teamed with major villain *ILE*CE* / *****
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*E*E** ME*KEL
624. Original; unrevealed, likely student; cast character's first cousin once removed C**I*
625. Comics; nuclear truck driver; The Flash: Iron Heights; has power to emit dangerous levels of radiation F*LL**T / *EIL B**M**
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*E M**** /  **VIE* *EE*
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 FEI**
629. Original; asylum nurse; joked with villain (the latter in a cover identity) J**ET
630. Real person; occultist, mystic, alchemist, writer, poet, painter, mountaineer, and ceremony magician; soul trapped in an object *LEI*TE* C**WLE*
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character ***I* *I*G* (MI****VE**E)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *EIM***K
633. Comics; security agent, police officer; Robin; murdered cast character's father *ET***T** /  MIG*EL **BLE*
634. Original; unrevealed; has fragokinesis power VICKIE B*LE*
635. Original; unrevealed; kidnapped by legacy villain W*IT*E* **TC*I****
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower GE*E ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character *E* M*ELLE*
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** L*G*E (**B*T)
640. Original; special agent of sorts; awarded Agent of the Month *EIL MC*EIL [LOCKED; both remaining letters the same; letters found at time of locking: BCEFGIJKLMPTVW2780]
641. Original; unrevealed; father of cast character P**L **L
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**-EL
643. Original; bus driver, criminal; stomach slashed by major villain KEI*** M***E
645. Comics; mental health evaluation team clinician; Vigilante; accompanied characters (one cast) on another cast character's arrest  *E*E C**PE*TE*
646. Original; unrevealed; gained powers in an experiment J**PE* T***E*
647. Original; criminal; right-hand man for recurring villain **ECK
648. Comics (prototype from magazine); vigilante; Action Comics  (prototype from Science Fiction: The Advance Guard of Future Civilization); villainous counterpart of a superhero **PE**** / K*L-EL (E**T*- T**22)
649. Real person; theatrical producer; oversaw major playwright's work P**L*P *E**L**E
651. Original; councilman; ally of major villain K*LLE**
652. Earlier show; TV newscaster; The Flash (1990 series); seen in erased future KLI*E [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
653. Original; bartender; ex-girlfriend of main character *E*G**
654. Original; unrevealed; was wife of season villain, the latter using an alias G*IL K***
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TTE* M****
656. Original; doctor; assigned to care for main character ****EL ****IG*E*
657. Original; police officer; provided superhero with intel *****
658. Original; reporter; apologized for prank pulled on co-worker M*CKE**IE
659. Original; research scientist; killed after procuring a map E**** **GE**
660. Original; college student; member of fraternity and convention attendee K*LE FE**K
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war M*LEFIC J'****
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective *E** *****
663. Original; TV anchorman and news reporter; reported on a major first episode story  ME**ITT ***I*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy BL*CK**T / F***** GIB***
665. Original; editor-in-chief; succeeded comics based character in role  **M*EL F**WELL
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J*** B***E
667. Real person; astronaut; major villain impersonated him J*** *WIGE*T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island Vl** VE*E*IKT*V
669. Original; unrevealed; alien with fire powers I*FE**I** *TT*CKE*
670. Original; anchorwoman; often reports on main character's activities **** *EWITT
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain C**** G*L*
672. Comics; assassin; WildC.A.T.s; kills younger versions of targets T*E P*LG*IM
673. Original; bar owner; acted as vigilante aided by nephew's ability to heal EL G*T*
674. Original; unrevealed; sibling of major villain **LI* *W*E*'* *I*TE*
675. Original; police officer; villain attached bomb to chest *ILC**
676. Original; criminal; robbed blood banks for sustenance *IL** W*ITE
677. Comics; astronomer, assassin; Crisis on Infinite Earths; may have replaced another character with the same code name due to the Arrowverse Crisis **. LIG*T /  KIMI** ****I
678. Comics; vigilante, prison guard, police detective (latter was cover); Superman; attempted to execute escaped convicts M**TE* J*ILE* / "C**L ***PE*"
679. Original but resembles character based on comics; waiter; resembles character from Justice League of America; existed in artificial reality P*BL*
681. Comics; newspaper intern turned police detective; Showcase; mistook main character for her husband I*I* WE*T-*LLE* (E**T*-2)
682. Original; inmate; magical fugitive who loves to sing *G*E /  F*E*E*IC
683. Original; unrevealed; fan of major character's writing ***I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character ****MITE P*L*CE G****
685. Comics (possibly); police captain; possibly Vigilante; fired for unintentionally causing someone's death *TEI*
686. Real person; unrevealed, student if any, presumed subsequent novelist; had tuberculous BE*TIE /  *E*BE*T GE**GE WELL*
687. Folklore; probably none; folklore of the Americas; fugitive from evil realm C**P*C*B**
688. Original; unrevealed; accused of being a witch J**E **WT****E
689. Original; music student graduate; attended University of Cincinnati V**IT* *IP***
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major/cast villain ***L*G*PTL**
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J***E*
693. Original; sorcereress cult member; mother of cast character **T*LIE L*G*E
694. Original; scientist; created super-soldiers with powers of specific villain MET***CT**
695. Real person; army lieutenant general; dismisssed war he was in as a  futile rebellion C***W*LLI*
696. Original; night club owner; main character slept with his fiancée M** F*LLE*
697. Original; executive employee; committed acts of industrial espionage PETE* 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 ***GE* /  WI**ICK ***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*M*K /  *E*** *EWITT
703. Original; security agent, criminal; helped frame cast characters MILLE*  [LOCKED; letters found at time of locking: BCEFGIJKLMPTVW2780]
704. Original; scientist; wife of major event character **EE*
705. Comics; criminal; possibly Green Arrow: Rebirth; major villain used him to make contact with another villain VI*GIL [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
706. Original; singer; participated in reality TV competition ***CÉ*
708. Original; football player running back; testified against murderous brother *P*LL* TE*L**
709. Original; media employee; mind controlled into committing suicide KELL*  [LOCKED; letters found at time of locking: BCEFGIJKLPTVW2780]
710. Original; scientist; wife of someone who was impersonated for a long time TE** M**G**
712. Original; unrevealed; was seen as candidate for human trials *E**ICK *IMM***
713. Original; director; worked for major studio in 1937 ****L* C*LE***
714. Original; police officer; killed in an ambush J**E*
715. Real person; musician; strand of hair snagged by cast character J**I* J*PLI*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character *LE* ***VE**' **T*E* (***I**I* PL*TI**M)
717. Original; scientist; ally of main character's mother JET**I** I****T*IE* *EM*T*L*GI*T (note: while not named in the show souce sources claim she's **. T*V*; I'll accept either name)
718. Original; unrevealed; version of another character, attended a World's Fair E*IT* B****M**
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*E*
720. Comics (indirectly); posed as lawyer; The Flash; counterpart character who tried to get someone into her homeworld CECILE ***T** (MI****VE**E)
721. Real person; federal agency Director; suspected immigrants of being enemy agents J. E*G** ****E*
722. Original; criminal; kidnapped people in a revenge attempt F***** ***I*
723. Original; federal agent; killed by cultists *EM**
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother ***Te
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 *LE*I LE***V
729. Similar to comics character with different code name and real name; doctor turned criminal; Wonder Woman;  augmented herself using stolen technology  C*BE*-W*M** /  L****  W***I*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 WE**T*E* WITC* /  J**L** J*CK*M