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)