Huib Rooymans

as Mr. Harmsen

as Jan Bout Sr. (2 episodes)

as Kolonel Everard van Aerdenhout

as Erwin Nijkamp

as Meneer Harmsen (218 episodes)

as Dokter Lammers (1 episode)

as Frank Dalstra (14 episodes)

as Jacob Berenstein (6 episodes)

as Hans

as Steeman-Woldring (1 episode)

as Meneer Wiegman (1 episode)

as Jacob

as Jan Weinberg

as Hugo

as Daan Pieters (7 episodes)