DC Universe Online MMO GameSony Online Entertainment has announced that Mark Hamill will voice The Joker and Kevin Conroy will voice Batman in the superhero MMORPG DC Universe Online.

Both actors know their part, since they played them in the cartoon series Batman: The Animated Series, but also in the acclaimed game Batman: Arkham Asylum. No need to say that Mark Hamill is best known as Luke Skywalker. There are also other movie and TV stars in DC Universe Online’s cast. Adam Baldwin is Superman, Gina Torres is the Wonder Woman, James Marsters is Lex Luthor and Michelle Forbes is Circe.

Also, remember that the beta registration is open. Both the PC and PS3 versions are scheduled for November.