Voiced the mutant villain Clayface on Batman: The Animated Series (1992), a character who, ironically, was a disfigured actor, then voiced the villain Slade on Teen Titans (2003), and also did the voice of the Hulk/Bruce Banner twice on two separate series, one for a guest spot on Fantastic Four: The Animated Series (1994) and one for a guest spot on Iron Man (1994), in addition to providing the voice of Orion for Justice League (2001). He then played the comic book character Hellboy in Hellboy (2004). He went on to portray Batman in Justice League Heroes (2006).