602. White Martian (Miranda Crane)

611. Frank Creed

619. Noelle

621. Bratva mechanic

629. Janet

634. Vickie Bolen

645. Rene Carpenter

658. Mackenzie

665. Samuel Foswell

672. The Pilgrim

675. Wilcox

693. Natalie Logue

720. Cecile Horton (Mirrorverse)

Those are correct. List Updated. the Nocentis might have been named after comic book writer/editor Anne Nocenti, while Maxima in both comics and shows is attracted to Superman. It appears that the Random Number Generator favours the A-Team's leader; it has good taste. Because the Silencer first appeared in Silencer #1, I couldn't really name that series in the clues; Ditto the previously found Jemm, who first appeared in Jemm, Son of Saturn #1.

The Silencer is worth 15 bonus shots. You just used 6 bonus shots so that leaves 60.

With so many characters found before 24 hours were up, that restarts the clock before more major clues are added.

 

Not quite a day but I'll be heading out in just over an hour plus I found a bunch of letters I missed so let's do this for today.

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 D.

Letters/numbers found so far: BCDEFGIJKLMNPTVWXZ245780

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**VE*
371. Original; judge; killed by someone whose trial she presided over T*E*E**  **W**D
372. Original; high school teacher; statutory rapist **M*EL  BE*N**D
373. Comics (this version's surname missing a syllable); journalist; The Flash; won a Pullitzer  M***N  BRIDGE
374. Original; cultist; escaped a raid on boss' lair initially  *C*L*TE /  C**IG
376. Original; weapons dealer; led a street gang  B**N*  M**ETTI
377. Original; firefighter; fire department including her is recurring  T*ME**  D*LLE*
380. Original; student if any; parents killed by assassin  T**L**  M***E
382. Original; police officer, cultist; posed as his cult leader and kidnapped a cast character  D*IL*
383. Comics; CEO, businessman, shipping magnate; Green Arrow; took bribes to allow drug smuggling  M**TIN **ME**
384. Original; firefighter; got doused in turpentine D*NN* DE L* VEG*
385. Real person; newscaster; played by herself, though real person reports out of a different city  LE*N* NG**EN
386. Slightly earlier (same episode) character this continuity; unrevealed; counterpart of Earth-1 version of character, though this version unnamed  ****I**N  **E*L***E WELL*'  FIFT* EX-WIFE (E**T*- T*D##)
387. Comics, though comics version's real name is unknown; criminal; All-Flash; absorbs kinetic energy  T**TLE /  ****ELL  GL*****
390. Original; unrevealed; flirted with cast character I*M* ***E
391. Comics; unrevealed; Teen Titans Special; mother of major character's half sister  K*Z*MI *D*C*I
392. Mostly original, though name a nod to a real person; crime boss; has been to a baseball arena  **INT***  **IM*****
393. Comics; mercenary; Nightwing; hired to kill the main villain of the season  G*ILLE*M*  B****E*
396. Original; Italian restaurant owner; homophobic  *LE***ND**
397. Original; criminal; blackmail and threatened the life of someone CL**  *T*NLE*
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*EV**  **INICK
402. Original; student turned assassin; kidnapped by extreme sect  T*LIB** / ME*I  N*TIF**
403. Original; government agent; worked with the main villain of the season  J**D*N  PIE*CE
404. Original; field agent; removed a villain's stinger from their victim's body ***TM*NN
406. Original; high school student; son of a recurring villain *WEN P**T
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*X (*.I.)
409. Original; personal assistant; host of alien consciousness I*M* ****E*
413. Real person; musician; performed at night club opening and was played by himself *TEVE **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*N D***ND
416. Slightly earlier (same episode) character this continuity; unrevealed; married the same person twice but divorced them both times ****I**N **E*L***E WELL*' F***T* EX-WIFE (E**T*-T*D#0)
417. Real person; presumed watercolourist if same as real version; sister of a famous female novelist C****ND** ***TEN
418. Original; police detective; took part in getting innocents convicted *T* D*NNELL*
419. Original; unrevealed; because friends with a cast character after they moved to their town for a time ***** **FFM*N
420. Comics; criminal; All-American Comics; created giant version of recurring toy character ***G*N T*E ***CE*E*
421. Original, but related to comics based character; actor, secret society leader; great-great-grandfather of cast character *EN** *TEIN
423. Earlier character this continuity; unrevealed; read a poem about bread *.P. WELL* (E**T*-25)
424. Comics; police detective; The Flash; partner (in the job sense) of cast character F*ED C***E
425. Original; unrevealed; uncle of cast character *IC*
428. Slightly earlier (same episode) character this continuity; arsonist; mistaken for visiting counterpart from another Earth EDDIE *LICK (E**T*-#)
429. Comics; head of IT, former hacktivist; OMAC; helped create (computer) super-virus with roommate and a cast character M***N 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*LENTIN* V**T*K)
431. Real person; jazz guitarist; killed by minotaur in erased timeline DJ*NG* *EIN***DT
432. Comics (comics version's surname has one fewer syllable); psychiatrist; Justice League of America; used a book to warp reality J**N DEEG*N
433. Original; accountant; actions led to extortion, kidnapping, and murder ****LD 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 ENC**NT*E**
436. Comics (individual based on a race); presumed criminal; Guy Gardner: Warrior; sentenced by main character's mother T**M*CK
439. Original; inventor, motorcyclist; invented new carburetor for shovelhead motorcycles C*L DEVIT*
440. Original; unrevealed; mother of cast characters N***EEN T***ZI
441. Comics; mayor; Green Arrow; killed by rogue vigilante group *LTM*N [LOCKED; letters/numbers found at time of locking: BCEFGIJKLMNPTVWXZ245780]
442. Original; high school student; family moved due to father's imprisonment TEG*N 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*EDD* ME*E**
446. Original; unrevaled; fostered alien child for a time D*N* F**D
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 N*T*LIE L*NE  I**N* (E**T*- T*D22)
449. Original; personal assistant/double agent; fired by boss for spying on behalf of boss' mother *L*N* (L-C**P)
450. Comics (slightly different codename); assassin; possibly Green Arrow; her team was allied with major villain *ED [LOCKED; characters found at time of locking: BCDEFGIJKLMNPTVWXZ245780]
451. Possibly comics; university student, stripper; Adventure Comics; daughter of cast character  J**NIE
452. Comics (comics version has different real surname); field supervisor; The Flash; has superhuman strength, etc.  F*E*Z* /  *LEX*  *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**N  WELL* (E**T*- T*D2)
455. Comics; TV new reporter turned sports journalist; The Flash; dated a main character for a time and has evil counterpart on another Earth LIND* 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**
460. Original; unrevealed; mother of a cast character I**BEL N*L
463. Apparently original, though related to real person; unrevealed; uncle of famous musician L*CI*** P*E*LE*
464. Earlier character this continuity; unrevealed; in prison camp for being Jewish FElICIT*  *M**K'*  E**T*-X  D*PPELG*NGE* (has accent somewhere)
466. Comics; none; Convergence: Superman; erased from existence and replaced with much older person of same name  J*N*T**N KENT (**E- C*I*I*)
468. Comics; prison warden; Bite Club; seen mainly in darkness, hinting she might be a vampire as per the comics version DEL T***
471. Comics (indirectly/different first name); terrorist; Supergirl; counterpart of hero/former cast character  T**M*N / WINN  *C**TT (E**T*- T*D##)
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***D
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  *ING* (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*DE* / T*N*  W**D***D
478. Comics (indirectly); unrevealed to the extent applicable; Action Comics; counterpart of sorts to relative of cast chatracters *LEX  D*NVE**'  **T*E* (*B*IDI*N  PL*TIN*M)
479. Original; criminal gang leader; used alien tech in crimes C*ET MINE*
480. Original; government agent; recurring ally of cast characters  V****EZ (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 *LEX* V*N **EN
484. Original; presumed student; nephew of cast character *.J.  DIGGLE [LOCKED; characters found at time of locking: BCDEFGIJKLMNPTVWXZ245780]
485. Comics; criminal; Robin Annual; could morph hands into blades **Z******P /  **ELENE  ****P
486. Original; deputy director/double agent; subverted his organization's attempts to find a main villain BE** [LOCKED; letters found at time of locking: BCEGIJKPTW2780]
487. Original; unrevealed; villager in an African nation  F**IN**L*
490. Original; crime boss; killed by gaseous villain ***Z  D**BIN***
491. Original; government agent; hunted a villain who killed him  *E*N*LD*
492. Original; unrevealed; killed by parasitic villain *NN*MED  ***PE-**IFTE*
493. Original; high school student when last seen; cast character secretly has a crush on her as a teen  VICKI D*N***E
494. Original; slave turned spy; tasked with stealing battle plans from an enemy *EN** *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*D#7 D*PPELG*NGE* (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 Z**I T***ZI (**B*T)
500. Original; restaurant co-owner/waitress; harassed by someone wanting protection money JENN* *****
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*D* JET [LOCKED; both remaining letters the same; characters found at time of locking: BCDEFGIJKLMNPTVWXZ245780]
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*'* ##4# *EINC**N*TI*N
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*NEL L*T***
508. Real person; senator; betrayed his best friend; this betrayal was chronicled by someone else in this collage in the real world 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*****D** **V*GE
510. Comics; museum owner/future currator; The Flash; will eventually curate a museum devoted to a main character DEXTE* M*LE*
511. Comics; CEO; The Power Company; had nannite-created powers BI*M*X /  J*CK *P*EE*
513. Original; server; played Dungeons & Dragons with cast character M**C*
514. Comics; district attorney; The Flash; prosecuted main character in trial *NT*N *L*TE*
519. Original; technology expert; tried unsuccessfully to help get someone back to their home Earth D*VID C*IN
520. Original; unrevealed; childhood bully of major villain JE**E FEDE*IC*
521. Original; senator; initially had anti-alien views MI**ND* C**NE
522. Original; nation's President; gave a speech on a late hero ****
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 LIZ* W**NE*
532. Comics; military sergeant and bomb defusal specialist; The Fury of Firestorm; could spontaneously combust objects upon physical contact PL**TI**E /  BETTE **N* ***Ci
534. Original; student, also vigilante in one future; legacy villain in erased future CiC*D* /  G**CE GIBB*N*
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 N*TE *E****D (**B*T)
537. Earlier character this continuity; posed as police officer; replaced somene captured in an elevator D*I** K**BE* (MI****VE**E)
539. Original; investor; invested in an attempt to make a museum *LG*
541. Original; government agent; electrocuted underwater *LEX ***TT
542. Original; mercenary arsonist; crew fought off two superheroes before being defeated C*ME**N *B**M*    
543. Original; psychologist; kidnapped by group run by villain wanting advice M*L*NE
544. Comics (indirectly); company owner; Justice League of America ; husband of counterpart of main character's mother M*LC*LM ME*L*N (E**T*-2)
545. Original; army leader; alien who helped try to take over the Earth T*E C*MM*NDE*
546. Original; slave; whipped for accidentally burning cloth prior to being freed by heroes M***
547. Original; actor; posed as father of cast character **ND* ****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 IN N*TI*N*L CIT*
549. Comics (comics version has no first name); bodyguard; Green Arrow: Year One; bodyguard to main character's father D*VE **CKETT
550. Original; controlled demolitionist, terrorist; accidentally killed children in building detonation *LEX 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*DI* L*CK***D
553. Original; security agent; ex-husband of cast character T*LE*
554. Original; government agent; hunted a villain who killed him T**NG
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*NCE (CL*NE)
557. Original; high school student; ex-boyfriend of cast character *E*N *MIT*
558. Original; likely student of any; son of a later superhero *KI* **M***I**
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*N* B**NE
563. Original; child trafficker; kidnapped main character while latter still a kid C*NDICE L*NG
566. Original; police officer; arrested cast characters for disrespecting him and partner MEDIN* [LOCKED; characters found at time of locking: BCDEFGIJKLMNPTVWXZ245780]
567. Original; company vice president; helped foot bill for free medical event EV*N WENDE*
568. Comics unnamed, radio show named; vigilante; Action Comics, named in The Adventures of Superman; killed by counterpart of main character J*ME* *L*EN'* E**T*-X D*PPELG*NGE* (one letter has accent)
569. Original; drug dealer; sold drag that turned people into rage monsters KE*IN **GGIN*
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 *LICE B*LEN
573. Comics (gender swapped/different real name); cultural anthropology professor turned criminal; The Fury of Firestorm; could animate objects BL*CK BI**N / MIN* C***T*N
574. Original; asylum inmate; has drooling problem *B****M
577. Original; housewife/restaurant assistant; supplied the burgers' secret sauce ***ND* BEEM*N
578. Original; pastor; lived in Odessa, Texas in 1925 P**ELL
579. Original; science centre owner; secretly worked for season main villain D**G MILLE*
580. Original; unrevealed, likely student if any; has alien for a pet *L*N* (*PIKE'* **NE*)
581. Original; gangster; skipped town to avoid main character M**C** *T*CK*EIME*
584. Comics (possibly); unrevealed; Arkham Asylum: A Serious House on Serious Earth; was rewarded money for hel[ping cast characters locate a car M*D D*G
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*N** *PE***
589. Real person; physicist; kidnapped by cast character to help solve a specific problem; think Bohemian Rhapsody G*LILE*
592. Real person; phone operator, inventor, actress; film career drerailed by time-displaced woman *ED* L*M***
593. Original; army officer; led soldiers in capturing cast characters MIK**IL **K*DIN
594. Comics; slam harvester, dive instructor; Green Arrow: Year One; worked with cast character while trapped on an island T*I*N* VENEDIKT*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 B*ETT C*LLI** (E**T*-2)
597. Original; secretary for major recurring character (season 1 of series) P**LIN*
598. Original; judge; precided over trail of main character's mother M*NDELB**M
599. Original; unrevealed; attended daughter's wedding but ended up making out with the would-be groom M*. *INCL*I*'*  M*T*E*
600. Comics but gender swapped; criminal; The Brave and the Bold; has mind control and telekinesis X*T**
603. Comics; unrevealed; Batman: Shadow of the Bat; born with mental illness and prone to attacking others *M*GD*L* /  ***** *ELZINGE*
604. Comics (gender swapped, so slightly different real name); criminal; The Flash; can induce vertigo T*P / **** DILL*N
605. Original; cyberterrorist, now high school student; disowned by parents for being a lesbian P**KE* T***E*
607. Comics; lab assistant; The Fury of Firestorm; cast characters unnerved by his resemblance to a super-villain  *EN** *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*NE*** J*N*EN
609. Original; scientist; alien with thorns on his forearms ****N 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.  INM*TE ##22 /  *T*NLE*  D*VE*
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*NE W**D*
616. Comics; vigilante; Batwoman, but inspired by character from Detective Comics; only seen in a photo K*TE K*NE (***T*-##)
617. Comics; scientist; The Brave and the Bold; developed a device with the power to create a man-made earthquake B*I*N M**K*V
618. Original; money launderer; worked for crimelord in flashbacks P**T* F*IEDKIN
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 / NEIL B**M*N
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**** /  X*VIE* *EED
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**
631. Comics (indirectly); posed as chief of police; The Flash Secret Files and Origins; replaced main version of the character D*VID *ING* (MI****VE**E)
632. Original; accountant; attempt to retrieve money extorted from a mayor J** *EIM*D*K
636. Comics (comics version's first name unrevealed); technology firm employee; The Flash; fired from organization and then killed for being whistleblower GENE ***KK
637. Original; arms dealer; came to town to sell a shipment of stolen weapons but was interrupted by cast character LE* M*ELLE*
639. Comics (indirectly); timeline protector; Hellblazer; mistakenly believed herself to be the real version **T** L*G*E (**B*T)
641. Original; unrevealed; father of cast character P**L N*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
646. Original; unrevealed; gained powers in an experiment J**PE* T**NE*
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*M*N / K*L-EL (E**T*- T*D22)
649. Real person; theatrical producer; oversaw major playwright's work P**L*P *EN*L**E
651. Original; councilman; ally of major villain K*LLEN*
653. Original; bartender; ex-girlfriend of main character *E*G*N
655. Original, but resembles character based on comics; mobster; resembles character from Justice League of America; seen in artificial reality C*TTE* M***N
656. Original; doctor; assigned to care for main character **F*EL **D*IG*EZ
657. Original; police officer; provided superhero with intel *N**N
659. Original; research scientist; killed after procuring a map ET**N **GE**
661. Comics; unrevealed if any; Martian Manhunter; betrayed his race during a civil war M*LEFIC J'*NZZ
662. Comics; drug dealer; Green Arrow and Black Canary; attempted to murder a police detective *E*N **N**
663. Original; TV anchorman and news reporter; reported on a major first episode story  ME**ITT D*VI*
664. Comics (different real surname); student; Flashpoint; had the power to harness electrical energy BL*CK**T / F***** GIB***
666. Original; named after real person but not a true counterpart; criminal; kidnapped major character's son J**N B**NE
667. Real person; astronaut; major villain impersonated him J**N *WIGE*T
668. Original; drug harvester, deckhand; harvested a specific drug on a recurring island VL*D VENEDIKT*V
670. Original; anchorwoman; often reports on main character's activities **N* *EWITT
671. Comics; criminal, orphanage head; All-American Comics; test subject for major villain C**** G*LD
674. Original; unrevealed; sibling of major villain **LIN DW*E*'* *I*TE*
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 D*. 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 D**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-*LLEN (E**T*-2)
682. Original; inmate; magical fugitive who loves to sing *G*E /  F*EDE*IC
683. Original; unrevealed; fan of major character's writing D**I*
684. Original; some sort of protector (can't be more specific without revealing too much fo the answer); protected cast character D*X*MITE P*L*CE G***D
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*NE **WT***NE
689. Original; music student graduate; attended University of Cincinnati V*NIT* *IP**N
690. Comics; princess; Action Comics, though elements of the character from Superman's Pal, Jimmy Olsen; major/cast villain N*XL*G*PTLNZ
691. Original, though possible nod to real person; military lieutenant turned special forces unit leader; attacked government organization for revenge J**NE*
694. Original; scientist; created super-soldiers with powers of specific villain MET*D*CT**
696. Original; night club owner; main character slept with his fiancée M*X F*LLE*
697. Original; executive employee; committed acts of industrial espionage PETE* K*NG
701. Original; army member; served under cast character *NT*N*
702. Comics; scientist; The Fury of Firestorm; was seen as a potential superhero but became a villain T*K*M*K /  *EN** *EWITT
704. Original; scientist; wife of major event character X*EE*  [LOCKED; both remaining letters the same; letters found at time of locking: BCEFGIJKLMPTVWXZ245780]
706. Original; singer; participated in reality TV competition ***CÉ*
708. Original; football player running back; testified against murderous brother *P*LL* TE*L**
710. Original; scientist; wife of someone who was impersonated for a long time TE** M**G*N
712. Original; unrevealed; was seen as candidate for human trials DE**ICK *IMM*N*
713. Original; director; worked for major studio in 1937 **N*LD C*LE**N
714. Original; police officer; killed in an ambush J*NE*
716. Comics (indirectly); science based employee to the extent applicable; Action Comics; counterpart of recurring character *LEX D*NVE**' F*T*E* (*B*IDI*N PL*TIN*M)
717. Original; scientist; ally of main character's mother JET**I*N IND**T*IE* *EM*T*L*GI*T (note: while not named in the show souce sources claim she's D*. T*V*; I'll accept either name)
718. Original; unrevealed; version of another character, attended a World's Fair EDIT* B***DM*N
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*
722. Original; criminal; kidnapped people in a revenge attempt F**Z*D **DI*
723. Original; federal agent; killed by cultists DEM**
725. Comics; terrorist financier; Young Justice; other death of main character's half-sister's mother D*NTE [LOCKED; characters found at time of locking: BCDEFGIJKLMNPTVWXZ245780]
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 *LEXI LE*N*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*N /  L****  W***INGT*N