John Buijsman

as Self (voice)

as Opa Jan

as Richard

as Kees

as Richard van Kampen

as Nico

as Voice-over

as Captain SS Rotterdam

as Willem

as Vader Bas

as Vader Alex

as Meester Menno (voice)

as Arend Valk

as Principal

as Opa Darius

as Pa

as Henk van Langeveld

as Dr. Doolittle

as Joop

as Huub

as Mr. van Dol

as Inspector

as Rob

as Father Antoin

as Simon

as Karel Groen

as Ernie T.

as Karel

as Dr. Doolittle

as Pooijer

as Dr. Doolittle

as Meneer Visser