Reparto
Jason Lee
Shoeshine / Underdog (voice)
Peter Dinklage
Dr. Simon Barsinister
Jim Belushi
Dan Unger
Patrick Warburton
Cad
Alex Neuberger
Jack Unger
Taylor Momsen
Molly
John Slattery
Mayor
Amy Adams
Polly Purebred (voice)
Brad Garrett
Riff Raff (voice)
Samantha Bee
Principal
Larry Vigus
Security Guard
Bates Wilder
Cop
Sujoy De
Office Worker #1
Michele Proude
Office Worker #2
Susie Castillo
Diana Flores
Bruce-Robert Serafin
City Worker (as Bruce Serafin)
Lonnie Farmer
Passerby
Anthony Estrella
Male School Teacher (as Tony Estrella)
Lewis D. Wheeler
Geek with Glasses
Frank Ridley
Police Sergeant
Joe Stapleton
Cat Burglar Police #1
Armen Garo
Cat Burglar Police #2
Rena Maliszewski
Mother
Diana Shneider
Police Secretary
Ezra Buzzington
Referee
Jay Leno
Jay Leno
Phil Morris
Supershep 1 (voice)
Michael Massee
Supershep 2 (voice)
Cam Clarke
Little Brown Dog / Supershep 3 (voice)
John DiMaggio
Bulldog / Supershep 4 (voice)
Danny Mastrogiorgio
Crazy Dog (voice)
Jess Harnell
Astronaut (voice)
Joe Bucaro III
Goon #1
Stuart F. Wilson
Goon #2
John Franchi
Observer (uncredited)
Susan Garfield
Office Worker (uncredited)
