as Twin Boy 1 / Computer Voice 2 / Professor / Hawkmon / Halsemon (voice)
as Additional Voices (voice)
as Oozelings (voice) (uncredited)
as Angel (voice)
as Destruxo/Mutantrum (voice)
as Destruxo (voice)
as Gluto (voice)
as Diabolico (voice)
as Diabolico/Gold Beaked Monster (voice)
as Hank (voice)
as Emperor Zarkon (voice)
as Venus Claptrap (voice)
as Porkasaurus (voice)
as Witch Doctor (voice)
as Hornix (voice)
as Club Owner (voice)
as Sheriff Longarm D. Law (voice)
