Medium: TV series
Arnold Wesker, a second-tier villain in the Batman rogues' gallery, is notable for his advanced split personality disorder. Wesker himself is a meek, timid, middle-aged man but the ventriloquist dummy that he can't separate himself from embodies his alternate persona, Scarface, a crime lord so ruthless that tons of henchmen don't seem to mind that they're technically taking orders from a wooden doll.
Scarface's first few appearances were modeled after Al Capone, like the 1932 original film. After countless comic book appearances and several episodes on the popular Batman: The Animated Series, Scarface became Tony Montana on The Batman, the lesser middle aughts follow-up to one of the greatest cartoons ever. This Pacino flecked Scarface appeared on three episodes.