Siegfried Lowitz

as Alfred Langer (34 episodes)

as Maximilian

as Herr Ellerbrook (1 episode)

as Self (1 episode)

as Benhamou (1 episode)

as Self (1 episode)

as Dr. Alfred Flohr

as Self (1 episode)

as Self (1 episode)

as Erwin Köster (111 episodes)

as Self (1 episode)

as Maître Magloire (3 episodes)

as Werner Rutger (1 episode), as August Bark (1 episode)

as Evens

as Dr. Orloff

as Robert Löffler

as James Wharton

as Inspector Edward Keith-Kendrick

as Herr Soldan

as Martinay

as Philo

as Fabrikant Dreissiger

as Pawel Rusanow

as Heinrich Vollweg

as Orogon