Ewan 'Sudsy' Clark

as Doctor

as Santa Mouse (voice)

as The Boss

as Harvey

as Preston Crawford (1 episode), as Sean Penny (1 episode)

as Mr. McKinnis

as Congressman Nelson Braddock (1 episode)

as Vincent Brunings (1 episode)

as Additional Voices (voice) (52 episodes)

as Heinrich (1 episode), as George Lalonde (1 episode)

as Dr. Fillinger

as Searcher