- Robert Ginty
- Boris 'Bo' Donnelly
- Fred Williamson
- Noah Barclay
- Belinda Mayne
- Ingrid Donnelly / Olga
- Jess Hahn
- Sam
- Mirella Banti
- Sophia
- Diana Goodman
- Olga
- Gordon Mitchell
- Olaf
- Henri Guégan
- Mike Henchman / Peter, Bo mercenary (uncredited)
- Coskun Gögen
- One of the thugs
- Ayten Gökçer
- Sophie De Rey, plastic surgeon
- Edouard Pallardy
- Bo as a boy
- Jean-Marie Pallardy
- Father
- Benito Stefanelli
- Barbossa
- Annemieke Verdoorn
- Assistent to plastic surgeon
- Bruno Zincone
- Interrogator