Shoeshine / Underdog (voice)
Dan Unger
Cad
Mayor
Dr. Simon Barsinister
Riff Raff (voice)
Molly
Polly Purebred (voice)
Jack Unger
Security Guard
Cop
Police Sergeant
Small Boy
Police Secretary
Principal
Observer
Referee
Jay Leno
Diana Flores
Supershep 1 (voice)
Supershep 2 (voice)
Little Brown Dog / Supershep 3 (voice)
Bulldog / Supershep 4 (voice)
Crazy Dog (voice)
Astronaut (voice)
Office Worker
Police Chief