- Dietmar Schönherr
- Â Cliff Allister McLane 7 episodes, 1966
- Eva Pflug
- Â Tamara Jagellovsk 7 episodes, 1966
- Wolfgang Völz
- Â Mario de Monti 7 episodes, 1966
- Claus Holm
-  Hasso Sigbjörnson 7 episodes, 1966
- Friedrich G. Beckhaus
- Â Atan Shubashi 7 episodes, 1966
- Ursula Lillig
- Â Helga Legrelle 7 episodes, 1966
- Benno Sterzenbach
- Â General Wamsler 7 episodes, 1966
- Friedrich Joloff
- Â Oberst Villa 6 episodes, 1966
- Thomas Reiner
- Â Adjutant Michael Spring-Brauner 5 episodes, 1966
- Franz Schafheitlin
- Â Sir Arthur 5 episodes, 1966
- Hans Cossy
- Â Marshall Kublai-Krim 5 episodes, 1966
- Charlotte Kerr
- Â General Lydia van Dyke 4 episodes, 1966
- Alfons Höckmann
- Â Rott 3 episodes, 1966
- Gerhard Jentsch
- Â Hydra-Astrogator 3 episodes, 1966
- Norbert Gastell
- Â Hydra-Offizier / ... 2 episodes, 1966
- Reinhard Glemnitz
- Â Pieter-Paul Ibsen / ... 1 episode, 1966
- Herbert Fleischmann
- Â Dr. Schiller 2 episodes, 1966
- Alexander Hegarth
- Â Dr. Heine 2 episodes, 1966
- Nino Korda
- Â GSD-Ordonanz 2 episodes, 1966
- Emil Stöhr
- Â von Wennerstein 2 episodes, 1966
- Hans Epskamp
-  Minister für auÃerplanetare Angelegenheiten 1 episode, 1966
- Siegurd Fitzek
- Â Henryk, Verbannter auf Mura 1 episode, 1966
- Wolfgang Büttner
- Â Tourenne 1 episode, 1966
- Helmut Brasch
- Â Kommodore Ruyther 1 episode, 1966
- Konrad Georg
- Â Dr. Regwart 1 episode, 1966
- Erwin Linder
- Â Professor Sherkoff 1 episode, 1966
- Liselotte Quilling
-  Ingrid Sigbjörnson 1 episode, 1966
- Herwig Walter
- Â Richard Hall 1 episode, 1966
- Maurice Teynac
- Â Chefingenieur Kranz 1 episode, 1966
- Sigfrit Steiner
- Â Dr. Stass 1 episode, 1966
- Hans Wengefeld
- Â Sprengmeister 1 episode, 1966
- Heinz Beck
- Â GSD-Beamter 1 episode, 1966
- Vivi Bach
- Â Chroma-Ordonanz 1 episode, 1966
- Kunibert Gensichen
- Â Abschnittsleiter 1 episode, 1966
- Siegfried Fetscher
- Â Hyperion-29 Offizier 1 episode, 1966
- Rosemarie von Schach
- Â Chroma-Ordonanz 1 episode, 1966
- Walter Gnilka
- Â Chroma-Wissenschaftler 1 episode, 1966
- Wolf Rahtjen
- Â Oberst Mulligan 1 episode, 1966
- Christine Isensee
- Â T.R.A.V.-Ordonanz 1 episode, 1966
- Wilfried von Aacken
- Â Chroma-Wissenschaftler 1 episode, 1966
- Wolf Petersen
- Â Commander Alonzo Pietro 1 episode, 1966
- Margot Trooger
- Â SIE 1 episode, 1966
- Hans-Dieter Asner
- Â Offizier 1 episode, 1966
- Albert Hehn
- Â Commander Lindley 1 episode, 1966
- Willy Schäfer
- Â Tau-Astrogator 1 episode, 1966
- Claus Biederstaedt
- Â Introduction (uncredited) 7 episodes, 1966
- Wolfgang Hess
- Â Ground Control / ... (uncredited) 2 episodes, 1966
- Ursula Herwig
- Â TRAV-Vorzimmerdame (uncredited) 2 episodes, 1966
- Lukas Ammann
- Â Chefingenieur Kranz (uncredited) 1 episode, 1966
- Horst Raspe
- Â Voice Command (uncredited) 1 episode, 1966
- Kurt E. Ludwig
- Â Sprecher (uncredited) 1 episode, 1966
- Niels Clausnitzer
- Â Ship Commander 'Lupus 12' (uncredited) 1 episode, 1966