Rolf Illig

as Friedrich Lüttjohann

as Narrator (voice)

as Wilhelm Boden

as Dr. Lukas Heller

as Sam Barnes

as Dr. Voss (1 episode)

as Schröder

as Prof. Brandeis (1 episode)

as Wilhelm Friedrich

as Dr. Hilbig

as Daniels Father

as Juwelier Teichert (1 episode)

as Leo Würzburger

as Lenk

as Karl Sievenich (2 episodes)

as George's Father

as Jakob Niemeier (8 episodes)

as Max von Laue (2 episodes)

as Laternenanzünder (Stimme)

as Stoph

as Professor Dipferl (1 episode)

as Waller

as Dennison (3 episodes)