Jason Lee character Shoeshine / Underdog (voice)
Jim Belushi character Dan Unger
Patrick Warburton character Cad
John Slattery character Mayor
Peter Dinklage character Dr. Simon Barsinister
Brad Garrett character Riff Raff (voice)
Taylor Momsen character Molly
Amy Adams character Polly Purebred (voice)
Alex Neuberger character Jack Unger
Larry Vigus character Security Guard
Bates Wilder character Cop
Frank Ridley character Police Sergeant
Alexander 'Alex' Garde character Small Boy
Diana Shneider character Police Secretary
Samantha Bee character Principal
John Franchi character Observer
