Elenco (na ordem dos créditos)
Don Adams
Inspector Gadget(voice)
Holly Berger
Penny(voice)
Frank Welker
Brain(voice)
Louis Nye
The Great Wambini (segments "The Great Wambini's Seance" & "Magic Gadget")(voice)
Andy Goldberg
M.A.D Ninja (segment "The Capeman Cometh")(voice)
Diz White
Female Millionaire (segment "The Great Wambini's Seance")(voice)
Ronald E. House
Old Man (segment "The Great Wambini's Seance")(voice)
Maurice LaMarche
Chief Quimby(voice)
Townsend Coleman
Cpl. Capeman (segment "The Capeman Cometh")(voice)