Jason Lee
Shoeshine / Underdog (voice)
Acting
Peter Dinklage
Dr. Simon Barsinister
Acting
Jim Belushi
Dan Unger
Acting
Patrick Warburton
Cad
Acting
Alex Neuberger
Jack Unger
Acting
Taylor Momsen
Molly
Acting
John Slattery
Mayor
Acting
Amy Adams
Polly Purebred (voice)
Acting
Brad Garrett
Riff Raff (voice)
Acting
Samantha Bee
Principal
Acting
Timothy Crowe
Police Chief
Acting
Larry Vigus
Security Guard
Acting
Mario Mariani
Police Officer
Acting
Bates Wilder
Cop
Acting
Alexander 'Alex' Garde
Small Boy
Acting
Christopher Francis Byrnes
Mailman (as Christopher Byrnes)
Acting
Joe Siriani
News Stand Guy (as Joseph Siriani)
Acting
Sujoy De
Office Worker #1
Acting
Michele Proude
Office Worker #2
Acting
Albert M. Chan
Geek Worker
Acting
Jon Pierce
Hot Dog Vendor
Acting
Susie Castillo
Diana Flores
Acting
Bob Jaffe
Professor
Acting
Bruce-Robert Serafin
City Worker (as Bruce Serafin)
Acting
Lonnie Farmer
Passerby
Acting
Anthony Estrella
Male School Teacher (as Tony Estrella)
Acting
Malik McMullen
Bomb Squad Officer
Acting
Aaron Dorsey
Little Boy
Acting
Walter Covell
Old Man
Acting
Kate Lohman
Housewife
Acting
Lewis D. Wheeler
Geek with Glasses
Acting
Ellen Withrow
Female Teacher
Acting
John M. Deluca
Newscaster
Acting
Frank Ridley
Police Sergeant
Acting
Grady Justice
College Guy
Acting
Courtney O'Reagan
College Girl
Acting
Rebekah Aramini
Fox Collar Lady
Acting
Richney Fischer
Baseball Dad
Acting
Joe Stapleton
Cat Burglar Police #1
Acting
Armen Garo
Cat Burglar Police #2
Acting
Daniel Kirby
News Director
Acting
Stephen James Kidd
Bomb Squad Member (as Steve Kidd)
Acting
Rena Maliszewski
Mother
Acting
Diana Shneider
Police Secretary
Acting
Barry Blair
SWAT Captain
Acting
Bob Boehm
Bomb Squad Officer #2 (as Robert Boehm)
Acting
Lincoln P. Sisson
Bomb Squad Officer #3
Acting
Gabriel Field
Lyle
Acting
Harry L. Thomas
Police Artist
Acting
Amy Tanner
Kissing Girl
Acting
Nicole Kopka
Jogger in Park
Acting
Adam McCarthy
Capitol City Security
Production
Roy Souza
Capitol City Cop
Acting
Tom Paolino
Capitol City Cop
Acting
Scott Dittman
Hot Dog Contestant
Acting
Ezra Buzzington
Referee
Acting
Chris Andrew Ciulla
Fireman (as Chris Ciulla)
Acting
Jay Leno
Jay Leno
Acting
Phil Morris
Supershep 1 (voice)
Acting
Michael Massee
Supershep 2 (voice)
Acting
Cam Clarke
Little Brown Dog / Supershep 3 (voice)
Acting
John DiMaggio
Bulldog / Supershep 4 (voice)
Acting
Danny Mastrogiorgio
Crazy Dog (voice)
Acting
Jess Harnell
Astronaut (voice)
Acting
Joe Bucaro III
Goon #1
Crew
Stuart F. Wilson
Goon #2
Crew
John Franchi
Observer (uncredited)
Acting
Susan Garfield
Office Worker (uncredited)
Acting
Michael Tyler Henry
Jack Unger (voice)
Acting