John Buijsman

as Joop

as Dutch Soccer Coach

as Rob

as Karel Groen

as Simon

as Karel

as Principal

as Richard van Kampen

as Dr. Doolittle

as Dieter Adriaansens

as Dr. Doolittle

as Captain SS Rotterdam

as Arend Valk

as Mr. van Dol

as Vader Bas

as Arie Kooijman

as Dr. Doolittle

as Meneer Visser

as Pooijer

as Richard

as Father Antoin

as Inspecteur

as Henk van Langeveld

as Vader Alex

as Nico

as Willem

as Opa Jan

as Ernie T.

as Voice-over

as Inspector

as Huub

as Pa

as Voice-over

as Meester Menno (voice)

as Fons

as Kees

as Opa Darius

as Nikkelen Nelly