Malcolm McDowell
as
Dr. Stenson
John Glover
as
Gustav
Walter Perez
as
Mateo
Lacey Chabert
as
Ms. Lorne
Sigourney Weaver
as
Claudia Hoffman
Sam Neill
as
Frederick Hoffman
Miroslav Táborský
as
Gustav
Chris Bauer
as
Konrad
Trine Dyrholm
as
Anne
Gustav Lindh
as
Gustav
Magnus Krepper
as
Peter
Walter Slezak
as
Baron
Louisa Krause
as
Amber
Peter Stormare
as
Gustav
Lake Bell
as
Lauren Gray
Alex Karpovsky
as
(voice)
Hanna Alström
as
Lärarinnan
Georg Rydeberg
as
Gustav
Magnus Härenstam
as
Kronofogden
Mark Hamill
as
Grandpa
John Goodman
as
Paul Bunyan
Kelsey Grammer
as
The Amazing Blackstone / Norm Blandsford
Peter Gilsfort
as
Gustav
Adam Lundgren
as
Gustav
Josephine Bornebusch
Director
Pål Sverre Hagen
as
Gustav