Derek de Lint

as Grandpa

as Father Jan

as Man

as Eibert

as Self - Actor

as Opa Ber

as Johan Kievit

as Dokter Rossi

as Sinterklaas / Santa Claus

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 Terence Hill

as King of Dagonaut

as Gerben Kuipers

as Dr. Mandrakis

as Self • 6 eps

as William van Bronkhorst • 8 eps

as Rolan Antonov • 4 eps

as Victor DuBois • 1 eps

as Anton Zwager • 32 eps

24 eps

as Peter Fontein • 1 eps

as Dokter Rossi • 58 eps

as Manfredi Ferrer • 1 eps

as Stephen Brauer • 1 eps

as Head Gray Man • 1 eps

as Vader Richard • 1 eps

as Gerard Cuvee • 1 eps

as Roberto Rannaldini • 3 eps

as Derek Rayne, Ph.D. • 88 eps

as Georges van Baaren • 1 eps

as High Centurion Sulat Ray • 1 eps

1 eps

as Lothar de la Rey • 4 eps

as Lothar de la Rey • 4 eps

as Abramov • 2 eps

as Dr. Thost • 2 eps

as Dr. Gerard Bernard • 9 eps

as Karel van Laar • 7 eps