The Joker is the recurring antagonist of the DC Animated Universe which started with Batman: The Animated Series and continued through the series making up the DC Animated Universe (or DCAU). Like most characters in the DCAU, he is an iteration of the Joker from the DC comic books. The Joker was voiced by Mark Hamill, who may now be as well known for this as for his live-action role as Luke Skywalker. Starting out, he was an unknown crook working for the mob as an enforcer. Like in many versions of the his origins, Joker was accidentally knocked into a chemical vat at the Ace Chemicals factory following a chance encounter with Batman and had his skin bleached white, hair turn green, his lips colored bright red and his mind completely warped, turning him into an unhinged, sadistic madman.