Sebastiano Coímbra / Elliot Vance
Terence Hill
Antonio Coímbra / Greg Wonder
Bud Spencer
Olympia Chavez
April Clough
Managing director of the 'double agency'
Harold Bergman
Officier de police
C.V. Wood Jr.
Van der Bosch, Chef des mercenaires
Dary Reis
Doctor Albert von Eisenburg
Dennis Bourke
Tango's Thug / Mercenary (uncredited)
Giancarlo Bastianoni
Tango's Thug / Mercenary (uncredited)
Franco Sattamini
Tango's Thug / Mercenary (uncredited)
Sergio Smacchi
Tango's Thug (uncredited)
Franco Ukmar