Ingo Brosch

as Dr Kaufmann (2 episodes)

as Gerhard Jacobi

as Auctioneer

as Lieutenant Colonel (voice)

as Professor Clemenceau

as Victor Duquet (15 episodes)

as Dr. Jan Colbert (100 episodes)

as Moritz Steinhaus (1 episode)

as Dr. Harald Riedhoff (2 episodes)

as Dr. Weissgerber (1 episode), as Achim Ritter (1 episode)

as KOK Alexander Berthold (1 episode)