LAST UPDATED: January 14, 2020 (prior to the airing of Crisis parts 4 and 5)
 
This is an attempt to catalogue the various Arrowverse actors who have appeared in previous DC productions. Note that while I’ve tried to keep spoilers to a minimum, in some cases they are avoidable so if you aren’t caught up, read at your own risk. This list will be updated as more actors appear, new seasons air, and overlooked appearances are discovered. Please do let me know what I’m missing. At this point I’m limiting things to DC actors, the reason being that actors having appeared previously in a Marvel production doesn’t seem to increase their chances of landing an Arrowverse role. Should that change, I’ll add the Marvel actors in later.
 
I use Show Name, Show Start Year regardless of whether the actor appeared in that particular year, Character Name/s, Season(s) only for live action shows lasting more than one season, and Whether Cast, Guest (latter two TV), Movie, or Animated Short. For purposes of this list, actors who appear in every or nearly episode of a season are considered Cast regardless of their official classification.  To avoid any preferential treatment, actors are listed in order of last name. All prior live action DC work noted; for animated work only the best known work noted as voice actors tend to appear in many productions.
 
For purposes of this list, the Arrowverse is defined as the four live action superhero shows on the CW in 2016-2018+: Arrow (2012), Flash (2014), Supergirl (2015), and DC’s Legends of Tomorrow (2016). The reason the list counts Supergirl but not Flash (1990) when both have been shown on Flash (2014) to be on parallel Earths is simply because Supergirl is part of the current wave of shows while Flash (1990) is a long ended show.  Gotham (2014), while a contemporary of the Arrowverse shows, is on FOX and not connected to the Arrowverse. Actors whose sole DC work occurred subsequent to Arrow’s premiere in 2012 are not currently being tracked.
 
Alison Araya
Older Work: Superman Returns (2006): Actor (uncredited; Movie); Watchmen (2009): Foreign Newscaster (Movie)
Arrowverse Work: Arrow (2012): SCPD Officer aka Uni aka Officer Lopez (Guest Season 3-6)
Notes: Lopez is a Star City police officer.
 
Nikolas Baric
Older Work: Older Work: Smallville (2001): Thug #2 (Guest Season 10)
Arrowverse Work: Arrow (2012): Vincent Steelgrave (Guest Season 3), Thug #1 (Guest Season 4), Nathan Sierra (Guest Season 5); Legends of Tomorrow (2016): Hunter #3 (Guest Season 1); Carny #3 (uncredited) (Guest Season 3); The Flash (2014): Thug #2 (Guest Season 2), Security Guard #1 (Guest Seasons 3, 6); Supergirl (2015): Stick Up Man (Guest Season 2), Acolyte #2 (Guest Season 3), Rabbit #1 (Guest Season 5)
Note: Steelgrave is a minor Team Arrow foe.
 
Corinne Bohrer
Older Work: Flash (1990): Prank/Zoey Clark (Guest)
Arrowverse Work: Flash (2014): Prank/Zoey Clark (Guest Season 4)
Note: Prank was created for the original Flash series. In the current Flash series, Prank is the mother of the younger Trickster.
 
Clancy Brown
Older Work: Superman: The Animated Series (1996) and Justice League (2002): Lex Luthor (Guest) among other DC animated work.
Arrowverse Work: Flash (2014): Wade Eiling (Guest Season 1)
Note: Eiling is a corrupt soldier who in the comics is an enemy/sometimes uneasy ally of Captain Atom. While Brown has voiced a number of roles, Superman’s arch nemesis Luthor is by far what he’s most known for DC-wise.
 
Dean Cain
Older Work: Lois & Clark: The New Adventures of Superman (1993): Superman/Clark Kent (Cast); Smallville (2001): Curtis Knox (Guest Season 7)
Arrowverse Work: Supergirl (2015): Jeremiah Danvers (Guest Season 1-2)
Note: Cain plays Supergirl’s adoptive father on Supergirl; both this role and his appearance as a villain on Smallville were undoubtedly due to him playing Superman on Lois & Clark.
 
Lynda Carter
Older Work: Wonder Woman (1975): Wonder Woman/Princess Diana/Diana Prince (Cast); Smallville (2001): Moira Sullivan (Guest Season 6)
Arrowverse Work: Supergirl (2015): President Olivia Marsdin (Guest Seasons 2 & 4)
Note: While Carter appeared as key Smallville character Chloe Sullivan’s mother in Smallville, it was obviously her role as Wonder Woman that landed her the role of the US President in Supergirl.
 
Kevin Conroy
Older Work: Batman: The Animated Series (1992) and numerous subsequent shows and movies: Batman/Bruce Wayne (Cast or Movie); Batman: The Brave and the Bold (2008): Batman of Zur-En-Arrh, Phantom Stranger (both Guest Season 2) among other DC roles
Arrowverse Work: Batwoman (2019):  Bruce Wayne of Earth-99 (Guest Season 1)
Note: The Bruce Wayne of Earth-99 is unrelated to any of the various Bruce Wayne versions he’s voiced over the years.
 
Jon Cryer
Older Work: Superman IV: The Quest for Peace (1987): Lenny (Movie)
Arrowverse: Supergirl (2015): Lex Luthor (Guest Seasons 4-5); Batwoman (2019): same (Guest Season 1); The Flash: same (Guest Season 6)
Note: Lenny was a minor Superman foe; obviously his Supergirl character is a much bigger Superman foe. His appearances in Batwoman and The Flash are part of the Crisis on Infinite Earths.
 
Vito D'Ambrosio
Older Work: Flash (1990): Bellows (Cast)
Arrowverse Work: Flash (2014): Mayor Anthony Bellows (Guest Seasons 1-4)
Note: Bellows was a cop in the first Flash series and a mayor in the new series; it’s unknown if the Arrowverse Bellows was also a cop. Biff Maynard, who played his partner Murphy in the original series unfortunately passed on prior to the start of Flash (2014).
 
Alex Désert
Older Work: Flash (1990): Julio Mendez (Cast)
Arrowverse Work: Flash (2014): Julio Mendez (Guest Season 3)
Note: The Arrowverse Mendez has appeared in both the Flashpoint and regular realities. Like the original Flash series version, the Flashpoint Mendez worked for the police (though as Ca[tain rather than as a forensics scientist)
 
Erica Durance
Older Work: Smallville (2001): Lois Lane (Guest Season 4, Cast Season 5-10)
Arrowverse Work: Supergirl (2015): Allura Zor-El (Guest Season 3 &5), J’Onn J’Onzz as Noel Neill (Guest Season 3); Batwoman (2019): Lois Lane of Earth-167 (Season 1).
Note: J”onn’s Noel Neill alias is a tribute to the actress of the same name who, like Durance, played Lois Lane (Neill played her on The Adventures of Superman). Durance replaces Laura Benanti as Supergirl’s mother Allura on Supergirl. During the Crisis on Infinite Earths crossover she played both Allura and the Lois Lane from Smallville.
 
Matt Ellis
Older Work: Smallville (2001): Tanner Sutherland (Guest Season 4)
Arrowverse Work: Flash (2014): Zak Zeal (Guest Season 6)
Note: Zak is a multiversal investigator.
 
Courtney Ford
Older Work: Human Target (2010): Laura (Guest Season 1)
Arrowverse Work: Legends of Tomorrow (2015): Nora Darhk (Guest Season 3, Cast Season 4)
Note: Nora Darhk is villain Damien Darhk’s daughter
 
Victor Garber
Older Work: Green Lantern: First Flight (2009): Sinestro (Movie)
Arrowverse Work: Flash (2014): Martin Stein (Guest Seasons 1-4); DC’s Legends of Tomorrow: same (Cast Seasons 1-3), Supergirl: same (Guest Season 3), Arrow: same (Guest Season 6)
Note: Garber played Green Lantern’s future arch nemesis in a full-length animated movie; Stein is half of the heroic Firestorm gestalt being, though thus far on the Arrowverse shows it’s always been his partner who’s been in control of Firestorm.
 
Mark Gibbon
Older Work: Smallville (2001): Deputy (Guest Seasons 1-2); Mr. Raines (Guest Season 1); Sacks' Bodyguard (Guest Season 9)
Arrowverse Work: Arrow (2012): Ops Leader (Guest Season 2); Supergirl (2015): General Zod (Guest Season 2); Batwoman (2019): Angus Stanton (Guest Season 1)
Note: General Zod is a Kryptonian villain. Angus was a corrupt DA killed by the Executioner. Gibbon was also Roughneck in the 2013 movie Man of Steel.
 
Marrett Green
Older Work: Smallville (2001): TV News Announcer (Guest Season 5)
Arrowverse Work: Arrow (2012): TV Anchorman aka TV Field Reporter aka News Reporter aka Merrit Davis (Guest Seasons 1-2, 4-5, 7)
Note: Green frequently plays reporters in TV movies and series. It’s unclear if all his appearances as a reporter on Arrow are the Davis character or if they are different reporters.
 
Mark Hamill
Older Work: Flash (1990): The Trickster/James Jesse (Guest); Batman: The Animated Series (1992) and numerous subsequent shows and movies: The Joker (Guest or Movie); Batman: The Brave and the Bold (2008): The Spectre (Guest Season 2) among other DC roles
Arrowverse Work: Flash (2014): The Trickster/James Jesse (Guest Season 1-2), The Trickster/James Jesse of Earth-3 (Guest Season 3)
Note: Despite his many years voicing the Joker, it was most likely his Trickster role that got him into Flash (2014). All versions of the Trickster are Flash enemies. In the current Flash series his Trickster is the father of a younger Trickster.
 
Teri Hatcher
Older Work: Lois & Clark: The New Adventures of Superman (1993): Lois Lane (Cast)
Arrowverse Work: Supergirl (2015): Rhea (Guest Season 2)
Note: Rhea is the mother of Mon-El on Supergirl.
 
Adrian Holmes
Older Work: Smallville (2001): Griff (Guest Season 5), Basqat (Season 9); Human Target (2010): Negotiator (Guest Season 1), Vaughn (Guest Season 2)
Arrowverse Work: Arrow (2012): Frank Pike (Guest Season 1-6)
Note: Griff was an agent of Lex Luthor, while Basqat was a clone working for Zod. Frank Pike was a police captain.
 
Greyston Holt
Older Work: Smallville (2001): Tobias Rice (Guest Season 6)
Arrowverse Work: Batwoman (2019):  Tyler (Guest Season 1)
Note: Tobias was a minor villain. Tyler is the husband of Batwoman’s ex, Sophie.
 
Ernie Hudson
Older Work: The Super Powers Team: Galactic Guardians (1985):  Cyborg (Cast); Batman: The Animated Series (1992): Security Guard (Guest); Superman: The Animated Series (1996): Professor Felix (Guest)
Arrowverse Work: Arrow (2012): General Stewart (Guest Season 7)
Note: The superhero Cyborg appeared in the final season of the Super Friends series of shows. His Arrowverse character is the adoptive father of John Diggle.
 
Michael Ironside
Older Work: Superman: The Animated Series (1996) and Justice League (2002): Darkeseid (Guest); The New Batman Adventures (1997): 80s Batman (Guest); Smallville (2001): General Sam Lane (Guest Season 4 & 10).
Arrowverse Work: Flash (2014): Lewis Snart (Guest Season 2)
Note: Darkseid is the main villain of New Gods stories. Sam Lane is Lois Lane’s father while Lewis Snart is Captain Cold’s father
 
William Katt
Older Work: Batman: The Animated Series (1992): Zowie (Guest Season 3), Justice League (2001): Green Guardsman/Scott Mason (Guest Season 1), Batman: The Brave and the Bold (2008): Hawkman (Guest Season 2)
Arrowverse Work: Supergirl (2015): Minister (Guest Season 3)
Notes: Green Guardsman is an homage to the 1940s Green Lantern (Alan Scott). His guest appearance on Supergirl as a minister, however, probably owes less to his previous animated DC work than it does to playing Ralph Hinkley on The Greatest American Hero.
 
Jessica Parker Kennedy
Older Work: Smallville (2001): Plastique/Bette Sans Souci (Guest Seasons 8 & 10)
Arrowverse Work: Supergirl (2015): Nora West-Allen (Guest Season 3); Flash (2014): same (Guest Season 4), XS/Nora West-Allen (Cast Season 5)
Notes: Plastique is a terrorist. Nora is Flash’s daughter from the future, who goes by XS in season 5 of Flash.
 
Phil LaMarr
Older Work: Static Shock (2000): Static/Virgil Hawkins (Cast Seasons 1-4); Justice League (2001): Green Lantern/John Stewart (Cast Seasons 1-2); Justice League Unlimited (2004): Green Lantern/John Stewart (Cast Seasons 1-3); DC Super Friends: The Joker's Playhouse (2010): Cyborg/Gorilla Grodd (Short)
Arrowverse Work: Supergirl (2015): Leviathan/Malefic J'onzz (Guest Seasons 4-5)
Note: Static and Green Lantern are both superheroes he voiced in animated series, the latter a member of the Justice League. Malefic J'onzz is J’onn’s brother. LaMarr has done various other DC-related voices since Arrow began.
 
Zen Shane Lim
Older Work: Smaillville (2001): Dirk Lee (Guest Season 2)
Arrowverse Work: Batwoman (2019): Derek Holcomb (Guest Season 1)
Note: Dirk was a gangster. Derek was a scientist murdered by Mouse.
 
Carl Lumby
Older Work: Justice League (2001): Martian Manhunter/J'onn J'onzz (Cast Season 1-3) and numerous subsequent shows and movies as same and other characters.
Arrowverse Work: Supergirl (2015): M'yrnn J'onzz (Guest Seasons 3-5)
Note: M'yrnn is J'onn’s father.
 
Byron Mann
Older Work: Smallville (2001): Kern (Guest Season 2), Commander Cheng (Guest Season 4); Catwoman (2004): Wesley (Movie)
Arrowverse Work: Arrow (2012): Yao Fei Gulong (Guest Seasons 1, 5, 8)
Note: Yao Fei Gulong was an ally of Oliver Queen in season 1 flashbacks, the father of Mei and Shado.
 
Neil McDonough
Older Work: Green Arrow (2010): Green Arrow/Oliver Queen (Animated Short); Batman: Assault on Arkham (2014): Deadshot/Floyd Lawton (Movie).
Arrowverse Work: Arrow (2012): Damien Darhk (Cast Season 4, Guest Season 5); Flash (2014): same (Guest Season 2); DC’s Legends of Tomorrow (2016): same (Guest Season 1/3, Cast Season 2).
Note: Before playing a foe of Green Arrow, McDonough voiced Green Arrow in a short that appeared as a bonus feature on Superman/Shazam!: The Return of Black Adam (2010). His Deadshot role, though released after Arrow began, preceded his appearances on Arrowverse shows.
 
Phillip Mitchell
Older Work: Smallville (2001): Guard (uncredited; Guest Season 6)
Arrowverse Work: Arrow: Guard (Guest Season 4), Pollock (Guest Season 7); Supergirl (2015): Drug Buyer (Guest Season 2); Legends of Tomorrow (2015): Argus Officer (Guest Season 3); Batwoman (2019): Stu Donnelly (Guest Season 1)
Note: Stu was a corrupt cop killed by the Executioner
 
Dylan Neal
Older Work: Human Target (2010): Wes Gibson (Guest Season 1); Smallville (2001): Ray Sacks (Guest Season 9)
Arrowverse Work: Arrow (2012): Dr. Anthony Ivo (Guest Season 2)
Notes: Sacks was a Metropolis DA. Ivo (a Justice League foe in the comics), was a villain in season 2 flashbacks.
 
David Nykl
Older Work: Human Target (2010): Vincent Morgan (Guest Season 1)
Arrowverse Work: Arrow (2012): Anatoly Knyazev (Guest Season 2, 5-8)
Note: Anatoly is a sometimes friend, sometimes foe of Oliver Queen on Arrow.
 
Giles Panton
Older Work: Human Target (2010): Roger (Guest Season 1); Smallville (2001): Agent (Guest Season 9)
Arrowverse Work: Batwoman (2019): Shane McKillen (Guest Season 1)
Note: Shane is a mercenary who worked for Catherine Hamilton-Kane.
 
Amanda Pays
Older Work: Flash (1990): Tina McGee (Cast)
Arrowverse Work: Flash (2014): Tina McGee (Guest Season 1-2); Tina McGee of Earth-90 (Archive Footage Season 5)
Note: Both Tinas are scientists, with the original working for STAR Labs. Archive footage of her as the Tina McGee of Earth-90 (1990 Flash series) appeared in the Crisis on infinite Earths crossover, Flash season 5.
 
Alan Ritchson
Older Work: Smallville (2001): Arthur Curry/Aquaman (Guest Seasons 5-6, 8, 10); Justice League: The New Frontier (2008): Aquaman (uncredited) (movie)
Arrowverse Work: Supergirl (2015): Hawk of Earth-9 (Guest Season 5)
Note: Aquaman usually went by Arthur on Smallville. Hawk of Earth-9 is the same character he plays on the Titans streaming series.
 
Elysia Rotaru
Older Work: Smallville (2001): Elizabeth Bishop (Guest Season 8), Female Inn Guest (Guest Season 9)
Arrowverse Work: Arrow (2012): Taiana Venediktov (Cast Season 4)
Note: Taiana was an ally of Oliver Queen in season 4 flashbacks.
 
Ryan Robbins
Older Work: Smallville (2001): Louis Leery Jr. (Guest Season 3)
Arrowverse Work: Arrow (2012): Conklin (Guest Season 4)
Note: Leery was a Lex Luthor foe. Conklin was a villain working for Baron Reiter in Arrow season 4 flashbacks.
 
Carlo Rota
Older Work: Human Target (2010): Eli Rosko (Guest Season 2)
Arrowverse Work: Flash (2014): Remington Meister (Guest Season 6)
Note: Remington is a crimelord.
 
Brandon Routh
Older Work: Superman Returns (2006): Superman/Clark Kent (Movie); The Batman (2004): The Everywhere Man/John Marlowe (Guest)
Arrowverse Work: Arrow (2012): The Atom/Ray Palmer (Cast Season 3, Guest Season 4-5); Flash (2014): The Atom/Ray Palmer (Guest Season 1, 3, 6), Superman/Clark Kent of Earth-96 (Guest Season 6); DC’s Legends of Tomorrow (2016): The Atom/Ray Palmer (Cast Seasons 1-4); Supergirl Season 5: The Atom/Ray Palmer (Guest Season 5); Batwoman Season 1: The Atom/Ray Palmer, Superman/Clark Kent of Earth-96 (both Guest Season 1)
Note: Ray Palmer became the Atom midway into season 3 of Arrow. During the Invasion crossover, we learn that Supergirl resembles Ray’s cousin, likely a nod to Supergirl and Superman being cousins. While also playing the Atom; Routh reprised his role as the Christopher Reeve version of Supreman during the Crisis on Infinite Earths crossover.
 
Patrick Sabongui
Older Work: Watchmen (2009): Knot Top Gang Leader (Movie)
Arrowverse Work: Arrow (2012): Street Dealer, Soldier #2 (Season 1); Captain David Singh (Guest Seasons 5-7); Flash (2014): Captain David Singh (Guest Seasons 1-5); Supergirl (2015): Captain David Singh (Guest Season 3)
Note: Singh was Barry Allen’s boss on The Flash.
 
Ashley Scott
Older Work: Birds of Prey (2002): The Huntress/Helena Kyle (Cast Season 1)
Arrowverse Work: Flash (2014): The Huntress/Helena Kyle of Earth-203 (Guest Season 6)
Note: The Huntress who appears in the Crisis on Infinite Earths crossover is the same character as the one from Birds of Prey.
 
Chris Shields
Older Work: Smallville (2001): Courier (Guest Season 5); unknown (Guest Season 6); VRA Op Hacker (Guest Season 10)
Arrowverse Work: Flash (2014): John Bolen (Guest Season 5); Batwoman (2019): Mayor Michael Akins  (Guest Season 1)
Note: Atkins is loosely based on a Batwoman comics character. Bolen was part of a family targeted by cicada because his wife Vickie was a meta.
 
John Wesley Shipp
Older Work: Flash (1990): Flash/Barry Allen (Cast)
Arrowverse Work: Flash (2014): Henry Allen (Guest Seasons 1-3), Flash/Jay Garrick of Earth-3 (Guest Seasons 2-3, 6), Flash/Barry Allen of Earth-90 (Guest Season 6); Supergirl: Flash/Barry Allen of Earth-90 (Guest Season 4; sequence repeated in Arrow Season 7 and Flash Season 5); Arrow: Flash/Barry Allen of Earth-90 (Guest Season 7)
Note: Shipp originally played Barry’s father on the Flash 2014 series but now plays a version of comics’ original Flash. His season 3 appearance as Henry Allen was in the Flashpoint reality. He returned to the role of the Flash from the 1990 series in the Elseworlds and Crisis on Infinite Earths crossovers.
 
Marc Singer
Older Work: Batman: The Animated Series (1992): Man-Bat/Dr. Kirk Langstrom (Guest)
Arrowverse Work: Arrow (2012): General Matthew Shrieve (Guest Season 4)
Note: On Arrow, Shrieve only appeared in flashbacks. In the comics Shrieve commanded monsters not unlike Man-Bat.
 
Rachel Skarsten
Older Work: Birds of Prey (2002): Dinah Lance (Cast Season 1)
Arrowverse Work: Batwoman (2019): Alice (Cast Season 1)
Note: Dinah would have likely become the Black Canary had Birds of Prey continued. Alice is Batwoman’s sister and arch-nemesis.
 
Helen Slater
Older Work: Supergirl (1984): Supergirl/Kara Zor-El/Linda Lee (Movie); Batman: The Animated Series (1992): Talia al Ghul (Guest); Smallville: Lara-El (Guest Season 7 & 10)
Arrowverse Work: Supergirl (2015): Eliza Danvers (Guest Season 1-4)
Note: The former Supergirl plays Supergirl’s adoptive mother on the TV series. She was also a Batman enemy/love interest on Batman and Clark’s birth mother on Smallville. Since appearing on Supergirl (2014) she’s also appeared as Clark’s adoptive mother Martha Kent in DC Super Hero Girls movies.
 
David Sobolov
Older Work: Teen Titans (2003): Cron (Guest Season 1), Legion of Super-Heroes (2007): Persuader/Lord Reesmu (Guest Season 1)
Arrowverse Work: Flash (2014): Gorilla Grodd (Guest Season 1-3); Legends of Tomorrow (2015): same (Guest Season 3)
Note: He also voices Grodd in the non-Arrowverse Justice League Action. In the 2003 video game Justice League Heroes he was Darkseid.
 
Laura Vandervoort
Older Work: Smallville (2001): Kara/Supergirl (Cast Season 7, Guest Season 8 & 10)
Arrowverse Work: Supergirl (2015): Indigo (Guest Season 1)
Note: Vandervoort’s Kara was at least initially more resistant to Earth customs than the other versions of Supergirl, making her somewhat adversarial, though also an ally of Clark.  Indigo is a villain.
 
Briana Venskus
Older Work: Wonder Woman (2011): Reporter (Failed Pilot)
Arrowverse Work: Supergirl (2015): Agent Vasquez (Guest Season 1-3)
Note: Vasquez is a minor Supergirl ally.
 
Tom Welling
Older Work: Smallville (2001): Clark Kent (Cast Seasons 1-10)
Arrowverse Work: Batwoman Season 1 (2019): Clark Kent of Earth-167
Note: The Earth-167 Clark is the same character as from Smallville.
 
Burt Ward
Older Work: Batman (1966): Robin/Dick Grayson (Cast Seasons 1-3); Batman: The Movie (1966): same (Movie); Batgirl (1967): same (Short); The New Adventures of Batman: same (Cast Season 1); Legends of the Superheroes: same (Mini-Series)
Arrowverse Work: Supergirl (2015): Dick Grayson of Earth-66 (Guest Season 5)
Note: While his character is not named, his character in the Crisis on infinite Earths crossover is heavily implied to be the same Dick Grayson as in previous appearances (except possibly the animated New Adventures of Batman, which was rerun as part of Tarzan and the Super 7 and Batman and the Super 7). Subsequent to Arrow starting, he also voiced the character in the 2017 cartoon Batman vs. Two-Face.
 
Will Wheaton
Older Work: Teen Titans (2003): Aqualad (Guest Seasons 1-3, 5), Computer Geek (Guest Season 5); Legion of Super-Heroes (2006): Cosmic Boy (Guest Seasons 1-2), Human Scientist (Guest Season 1), Roderick Doyle (Guest Season 2); Batman: The Brave and the Bold: Blue Beetle/Ted Kord (Guest Seasons 1-2)
Arrowverse Work: Supergirl (2015): Doomsday Protestor (Guest Season 5)
Note: Wheaton also Kevin in an episode of the quasi-DC series The Zeta Project.. He also voiced Robin in an online video game. Since Arrow began, he has voiced Aqualad in Teen Titans Go! (flash in its movie)
 
Michael Jai White
Older Work: Justice League (2002) and Justice League Unlimited (2004): Doomsday (Guest); The Dark Knight (2008): Gambol (Movie); Batman: The Brave and the Bold (2008): Tattooed Man (Guest)
Arrowverse Work: Arrow (2012): Bronze Tiger/Ben Turner (Seasons 2 & 6)
Note: Doomsday was the monster who briefly killed Superman in the comics. Gambol is a mob boss not from the comics. Tattooed Man is a Green Lantern foe. Bronze Tiger works for the black ops government team the Suicide Squad. White also played Green Lantern (John Stewart) in the 2006 video game Justice League Heroes.
 
Sam Witwer
Older Work: Smallville (2001): Davis Bloome (Cast Season 8)
Arrowverse Work: Supergirl (2015): Agent Liberty/Ben Lockwood (Cast Season 4)
Notes: Bloome was Doomsday’s alter ego. Unlike the heroic comic book version, Supergirl’s Agent Liberty was a xenophobe targeting aliens.

Lucas Wolf
Older Work: Smallville (2001): Security Guard (Guest Season 10)
Arrowverse Work: Arrow (2012): League Assassin (Guest Season 3); Flash (2014): Thug #3 (Guest Season 1), Man in the Iron Mask (uncredited) (Guest Season 2)
Note: Man in the Iron Mask is actually another character whom I won’t spoil.
 
Robert Wuhl
Older Work: Batman (1989): Alexander Knox (Movie)
Arrowverse Work: Supergirl (2015): Alexander Knox of Earth-89 (Guest Season 5)
Note: While his character is not explicitly named, his character is heavily implied to be Knox from the 1989 Batman movie.
 
Brendon Zub
Older Work: Human Target (2010): Geoff (Guest Season 1)
Arrowverse Work: Flash (2014): Kyle (Guest Season 1); Batwoman (2019): Chuck Dodgson (Guest Season 1)
Note: Chuck is second in command of the villainous Wonderland Gang.
 

Last edited by Andy E. Nystrom (1/14/2020 7:24 am)