Jason James Richter

Bastian Bux

Melody Kay

Nicole

Jack Black

Slip

Ryan Bollman

Dog

Freddie Jones

Mr. Coreander / Old Man of Wandering Mountain

Julie Cox

The Childlike Empress

William Hootkins

Bark Troll / Falkor (voice)

Tony Robinson

Engywook

Thomas Petruo

Large Head

Moya Brady

Urgl

Tracey Ellis

Jane Bux

Kevin McNulty

Barney Bux

Nicole Parker

Nasty #1

Adrien Dorval

Nasty #2

Frederick Warder

Mr. Rock Chewer - Felsenbeißer / Shopping Clerk

David Forman

Junior Rockchewer

Andrea Nemeth

Rachel

Mark Acheson

Janitor

Marilyn Norry

Mrs. Crackerby

Alfonso Quijada

Delivery Man

Ulli Kinalzik

Eskimo Trapper

John 'Bear' Curtis

Lumberjack

Richard Newman

Photographer

Veena Sood

Sales Lady #1

Marcy Goldberg

Sales Lady #2

Lossen Chambers

Sales Lady #3

Hrothgar Mathews

Nursery Truck Driver

David Longworth

Log Dispatcher

Gary Martin

Mr. Rockchewer / Junior Rockchewer (voice)

Mac McDonald

Mrs. Rockchewer (voice)

Jesse Camacho

Beaver Boy (uncredited)