Hardness 10 (1974) — Cast
Cast
| Horst Janson | Konzernpräsident Straaten |
| Olga Georges-Picot | Mercier |
| Wolfgang Kieling | Melchior |
| Peter Capell | |
| Herbert Fux | |
| Tonio von der Meden | |
| Del Negro | |
| János Gönczöl | |
| Arthur Brauss | Abdul |
| Giuseppe Addobbati | |
| Heidi Treutler | |
| Georg Marischka | |
| Rolf Schimpf | |
| Joachim Hansen | |
| Maria Grazia Marescalchi | Steffen |
| Hans Gottschalk | |
| Michael Culver | Hubert |
| Marietta Meade | |
| Peter Vaughan | Mackintosh |
| Tilli Breidenbach | Winifred Ames |
| Jeremy Kemp | Sir Te |
Crew
| Thomas Nikel | Editor |
| Karl Heinz Willschrei | Producer |
| Peter Knöpfle | Makeup Artist |
| W. P. Hassenstein | Cinematography |
| Michael Haertel | Camera Operator |
| Karl Heinz Willschrei | Writer |
| Karsten Ullrich | Sound |
| Ursula Sensburg | Costume Designer |
| Elke Müller | Makeup Artist |
| Peter Weissenborn | Production Manager |
| Dieter Farell | Animal Coordinator |
| Thomas Nikel | Assistant Director |
| Rolf Zehetbauer | Production Designer |
| Götz Weidner | Art Direction |
| Udo Drebelow | Assistant Camera |
| Gordon Flemyng | Director |
| Hannes Nikel | Editor |
| Horst Jankowski | Original Music Composer |
| Derrick Bosch | Makeup Artist |
| Peter Berneis | Writer |