Copperhead
DC Comics
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Copperhead is the name of several supervillains appearing in comic books published by DC Comics, mostly as enemies of the superhero Batman.
Female variations appeared in Batman: Arkham Origins, and in live action on the first season of Gotham,... Wikipedia
Played by: Gideon Emery
Movie: Suicide Squad: Hell to Pay
Fictional universes: DC Universe and DC Animated Universe
Alter ego: (I) John Doe; (II) Nathan Prince; (III) Sameer Park; (IV) Jane Doe
First appearance: The Brave and the Bold #78 (July 1968)