Arthur Poppington / Defendor

Woody Harrelson

Kat

Kat Dennings

Chuck Dooney

Elias Koteas

Dr. Park

Sandra Oh

Paul Carter

Michael Kelly

Wendy Carter

Kristin Booth

Dominique Ball

Lisa Ray

Roger Fairbanks

Clark Johnson

Fay Poppington

Charlotte Sullivan

Olga

Tatiana Maslany

Radovan Kristic

A.C. Peterson

Biker Cliff

Tony Nappo

Wayne

Lyriq Bent

Jack Carter - 9

Dakota Goyo

Grandpa Henry

David Gardner

Blake

Michael Cram

Mr. Debrofkowitz

Bryan Renfro

Biker Bob

James Preston Rogers

Judge Wilson

Ron White

Constable Mike

Graham Abbey

Young Arthur

Max Dreesen

Jerry

Matt Gordon

Doctor

Peter Stebbings

Jack Carter - 4

John Paul Ruttan