Woody Harrelson

Arthur Poppington / Defendor

Kat Dennings

Katrina Debrofkowitz

Elias Koteas

Chuck Dooney

Kristin Booth

Wendy Carter

Clark Johnson

Roger Fairbanks

Michael Kelly

Paul Carter

Lisa Ray

Dominique Ball

Sandra Oh

Dr. Park

A.C. Peterson

Radovan Kristic

Tony Nappo

Biker Cliff

David Gardner

Grandpa Henry

Bryan Renfro

Mr. Debrofkowitz

Charlotte Sullivan

Poppington

Tatiana Maslany

Olga

Ron White

Judge Wilson

Graham Abbey

Constable Mike

Max Dreesen

Young Arthur

Matt Gordon

Jerry

James Preston Rogers

Biker Bob

Michael Cram

Blake