Full cast of Inspector Gadget

Don Adams

Inspector Gadget (voice)

86 episodes

Cree Summer

Penny (voice)

65 episodes

Dan Hennessey

Chief Quimby (voice)

65 episodes

Frank Welker

22 episodes

Maurice LaMarche

Chief Quimby (voice)

21 episodes

Holly Berger

Penny (voice)

21 episodes

Townsend Coleman

2 episodes

Don Knotts

1 episode

Mona Marshall

1 episode