Shoeshine / Underdog (voice)
Jason Lee
Dan Unger
Jim Belushi
Cop
Bates Wilder
Police Sergeant
Frank Ridley
Small Boy
Alexander 'Alex' Garde
Police Secretary
Diana Shneider
Principal
Samantha Bee
Observer
John Franchi
Referee
Ezra Buzzington
Jay Leno
Diana Flores
Susie Castillo
Supershep 1 (voice)
Phil Morris
Cad
Patrick Warburton
Supershep 2 (voice)
Michael Massee
Little Brown Dog / Supershep 3 (voice)
Cam Clarke
Bulldog / Supershep 4 (voice)
John DiMaggio
Crazy Dog (voice)
Danny Mastrogiorgio
Astronaut (voice)
Jess Harnell
Office Worker
Susan Garfield
Police Chief
Timothy Crowe
Mayor
John Slattery
Dr. Simon Barsinister
Peter Dinklage
Riff Raff (voice)
Brad Garrett
Molly
Taylor Momsen
Polly Purebred (voice)
Amy Adams
Jack Unger
Alex Neuberger
Security Guard
Larry Vigus
Stunts
Kimberly Shannon Murphy
Stunt Coordinator
Jon H. Epstein
Script Supervisor
Kelly Cronin
Caroline Vexler
First Assistant Director
Philip A. Patterson
Novel
Adam Rifkin
Screenplay
Story
Second Unit Director
Bob Brown
Visual Effects Supervisor
Ben Shepherd
Stuart F. Wilson
Joanne Lamstein
Original Music Composer
Randy Edelman
Producer
Gary Barber
Hoyt Yeatman
Joe Piscatella
Craig A. Williams
Director of Photography
David Eggby
Director
Frederik Du Chau
Roger Birnbaum
Jonathan Glickman
Supervising Music Editor
Charles Martin Inouye
Visual Effects Producer
Andy Fowler
Second Assistant Director
Ellen M. Hillers
Sound Designer
Robert L. Sephton
Special Effects Coordinator
Paul J. Lombardi
Executive Producer
Eric Ellenbogen
Bob Higgins
Co-Producer
Erin Stam
Supervising Sound Editor
Unit Production Manager
Donna E. Bloom
Casting Director
Gail Goldberg
Hair Department Head
Peggy Nicholson
Production Coordinator
Montez A. Monroe
Music Editor
Tanya Noel Hill
Rebekah Rudd
Todd Arnow
Mark Dornfeld
Animal Coordinator
Boone Narr
Rob Duncan
Gayle Busby
Scenic Artist
Lisa Shaftel
Ian Mclaughlin
Jimmy P. Wong
Aaron Vexler
Shawn Kautz
Makeup Department Head
Joe Rossi
Jay Polstein
Art Direction
James F. Truesdale
Set Decoration
Maggie Martin
Editor
Tom Finan
Costume Design
Gary Jones
Production Design
Garreth Stover