Mark Hamill, Kevin Conroy voicing DC Universe Online

Despite laying off 4 percent of its staff recently, Sony Online Entertainment has kicked off the beta registration for its upcoming massively multiplayer online role-playing game, DC Universe Online. In addition to providing gamers with an avenue to an exclusive first look into the game, the publisher today announced a star-studded cast of voice actors for the MMORPG, which includes Mark Hamill and Kevin Conroy, who will bring two of the game's most prominent characters to life.

Conroy (Batman: The Animated Series, Justice League Unlimited, Batman: Arkham Asylum) will bring the voice of Batman to life in the upcoming PC and PlayStation 3 title, and Mark Hamill (Batman: Arkham Asylum, Batman: The Animated Series) will enunciate the Joker's shrill laugh.

The rest of the voice cast is fairly prominent as well. Adam Baldwin (Dutch from Halo 3: ODST, Firefly) will voice Superman; former Firefly star Gina Torres will voice Wonder Woman; James Marsters of Smallville, Buffy, and Torchwood will bring life to Lex Luthor; and Michelle Forbes (Dr. Mossman in Half-Life 2) will create Wonder Woman's adversary, Circe.

Set within the DC Comics world, DC Universe Online will let players create a superhero or villain and fight alongside or against iconic comic book characters, such as the Joker, Batman, Superman, and others.

DC Universe Online is currently scheduled for release on November 2 for the PS3 and PC. For more on the game, check out GameSpot's most recent preview.