Derek de Lint

as Grandpa

as Father Jan

as Self

as William van Bronkhorst

as Man

as Rolan Antonov

as Eibert

as Self - Actor

as Opa Ber

as Johan Kievit

as Dokter Rossi

as Sinterklaas / Santa Claus

as Victor DuBois

as Baron van Westerholt

as Twan Benschop

as Karel

as Professor Holzmann

as Old Thom

as Willem Barentsz

as Anatole Deibler

as Casper

as Dokter Rossi

as Levi

as Anton Zwager

as Terence Hill

as King of Dagonaut

as Peter Fontein

as Gerben Kuipers

as Dr. Mandrakis

as Dokter Rossi

as Manfredi Ferrer

as Stephen Brauer

as Vlad

as Head Gray Man

as Vader Richard

as Mr. Bancroft

as Allessandro Censi

as Gerard Cuvee

as Tramp

as Karl Jorgensen

as Theo Van Sertema

as Roberto Rannaldini

as Derek Rayne, Ph.D.

as Dirk Petersen

as Bertus

as Bob Hooke

as Georges van Baaren

as Alex

as High Centurion Sulat Ray

as Carl van der Meer

as Dr. Estes

as Charles Deveraux

as Peter Koudbier

as Peter

as Lothar de la Rey

as Lothar de la Rey

as Lothar de la Rey

as Gus Morgan

as Abramov

as Abramov

as Inni Wintrop

as Dr. Thost

as Dr. Thost

as Abelard

as Dr. Gerard Bernard

as Franz

as Jan Clopatz

as Chris Brine

as Philippe / Marcel's son-Simone's husband

as Eric Hoogland

as Anton Steenwijk

as Paul de Wit / Nathan Blum

as Karel van Laar

as Jack de Graaf

as Ritsaart

as Lieutenant Steiner

as Erik

as Alex

as Theo van Delft

as Alex

as Mark