Koos van der Knaap

as Karel van Dam

as Conciërge St. Michiels

as Clerk

as Dr. Frits Steinbree (1 episode)

as Karel van Dam (228 episodes)

as Vriend Trip (1 episode)

as Leenders (1 episode)

as Politieagent (1 episode)

as Wally (1 episode), as Politieagent (uncredited) (1 episode), as Politieagent (7 episodes)

as Boer (1 episode), as Dries de Jonge (1 episode)

as Saffie, Shampo (104 episodes)

as Environmentalist #1

as Mijnheer van Delft (1 episode), as Meneer van Delft (1 episode)

as Juwelier Koekoek (1 episode)