Underdog

Jason Lee

As Shoeshine / Underdog (voice)

Peter Dinklage

As Dr. Simon Barsinister

Jim Belushi

As Dan Unger

Patrick Warburton

As Cad

Alex Neuberger

As Jack Unger

Taylor Momsen

As Molly

John Slattery

As Mayor

Amy Adams

As Polly Purebred (voice)

Brad Garrett

As Riff Raff (voice)

Samantha Bee

As Principal

Timothy Crowe

As Police Chief

Larry Vigus

As Security Guard

Mario Mariani

As Police Officer

Bates Wilder

As Cop

Alexander 'Alex' Garde

As Small Boy

Christopher Francis Byrnes

As Mailman (as Christopher Byrnes)

Joe Siriani

As News Stand Guy (as Joseph Siriani)

Sujoy De

As Office Worker #1

Michele Proude

As Office Worker #2

Albert M. Chan

As Geek Worker

Jon Pierce

As Hot Dog Vendor

Susie Castillo

As Diana Flores

Bob Jaffe

As Professor

Bruce-Robert Serafin

As City Worker (as Bruce Serafin)

Lonnie Farmer

As Passerby

Anthony Estrella

As Male School Teacher (as Tony Estrella)

Malik McMullen

As Bomb Squad Officer

Aaron Dorsey

As Little Boy

Walter Covell

As Old Man

Kate Lohman

As Housewife

Lewis D. Wheeler

As Geek with Glasses

Ellen Withrow

As Female Teacher

John M. Deluca

As Newscaster

Frank Ridley

As Police Sergeant

Grady Justice

As College Guy

Courtney O'Reagan

As College Girl

Rebekah Aramini

As Fox Collar Lady

Richney Fischer

As Baseball Dad

Joe Stapleton

As Cat Burglar Police #1

Armen Garo

As Cat Burglar Police #2

Daniel Kirby

As News Director

Stephen James Kidd

As Bomb Squad Member (as Steve Kidd)

Rena Maliszewski

As Mother

Diana Shneider

As Police Secretary

Barry Blair

As SWAT Captain

Bob Boehm

As Bomb Squad Officer #2 (as Robert Boehm)

Lincoln P. Sisson

As Bomb Squad Officer #3

Gabriel Field

As Lyle

Harry L. Thomas

As Police Artist

Amy Tanner

As Kissing Girl

Nicole Kopka

As Jogger in Park

Adam McCarthy

As Capitol City Security

Roy Souza

As Capitol City Cop

Tom Paolino

As Capitol City Cop

Scott Dittman

As Hot Dog Contestant

Ezra Buzzington

As Referee

Chris Andrew Ciulla

As Fireman (as Chris Ciulla)

Jay Leno

As Jay Leno

Phil Morris

As Supershep 1 (voice)

Michael Massee

As Supershep 2 (voice)

Cam Clarke

As Little Brown Dog / Supershep 3 (voice)

John DiMaggio

As Bulldog / Supershep 4 (voice)

Danny Mastrogiorgio

As Crazy Dog (voice)

Jess Harnell

As Astronaut (voice)

Joe Bucaro III

As Goon #1

Stuart F. Wilson

As Goon #2

John Franchi

As Observer (uncredited)

Susan Garfield

As Office Worker (uncredited)

Michael Tyler Henry

As Jack Unger (voice)