When the first adventure of the cosmonaut appeared in 1961 with "Unternehmen Stardust", not even the two German authors, Clark Darlton and K.H. Scheer, had any idea of the tenacity of their hero.
| Actor | Role |
|---|---|
 Bernd EichingerSelf | Self |
| HHans-Joachim ThunackSelf | Self |