Underdog

Jason Lee

as

Shoeshine / Un...

Peter Dinklage

as

Dr. Simon Bars...

Jim Belushi

as

Dan Unger

Patrick Warbur...

as

Cad

Alex Neuberger

as

Jack Unger

Taylor Momsen

as

Molly

John Slattery

as

Mayor

Amy Adams

as

Polly Purebred...

Brad Garrett

as

Riff Raff (voi...

Samantha Bee

as

Principal

Timothy Crowe

as

Police Chief

Larry Vigus

as

Security Guard

Mario Mariani

as

Police Officer

Bates Wilder

as

Cop

Alexander 'Ale...

as

Small Boy

Christopher Fr...

as

Mailman (as Ch...

Joe Siriani

as

News Stand Guy...

Sujoy De

as

Office Worker ...

Michele Proude

as

Office Worker ...

Frank Ridley

as

Police Sergeant

Diana Shneider

as

Police Secreta...

John Franchi

as

Observer

Ezra Buzzington

as

Referee

Jay Leno

as

Jay Leno

Susie Castillo

as

Diana Flores

Phil Morris

as

Supershep 1 (v...

Michael Massee

as

Supershep 2 (v...

Cam Clarke

as

Little Brown D...

John DiMaggio

as

Bulldog / Supe...

Danny Mastrogi...

as

Crazy Dog (voi...

Jess Harnell

as

Astronaut (voi...

Susan Garfield

as

Office Worker