Neil Kaplan

as Hank (voice) (1 episode)

as Sheriff Longarm D. Law (voice) (1 episode)

as Additional Voices (voice) (1 episode)

as Emperor Zarkon (voice) (76 episodes)

as Club Owner (voice) (1 episode)

as Additional Voices (voice)

as Albus Dumbledore / Lt. Stone (voice) (1 episode)

as Amr Ibn Alas / The Spy (voice)

as Angel (voice)

as Twin Boy 1 / Computer Voice 2 / Professor / Hawkmon / Halsemon (voice)

as Diabolico (voice)

as Venus Claptrap (voice) (1 episode), as Porkasaurus (voice) (1 episode), as Witch Doctor (voice) (1 episode), as Hornix (voice) (8 episodes)

as Oozelings (voice) (uncredited)

as Destruxo/Mutantrum (voice) (1 episode), as Destruxo (voice) (2 episodes), as Gluto (voice) (14 episodes), as Diabolico (voice) (25 episodes), as Diabolico/Gold Beaked Monster (voice) (1 episode)