Original: The home version of the game features Heihachi Mishima from Tekken, Link from The Legend of Zelda, Spawn from the comic book series by Todd McFarlane, and Necrid, a new character created by Todd McFarlane.
Simplified: The GameCube version has Link from Nintendo's The Legend of Zelda series, Heihachi Mishima from Namco's Tekken series of video games, and Todd McFarlane's Spawn from the comic book Spawn (comic).