Terence Hill
— Elliot Vance / Sebastiano Coímbra
Bud Spencer
— Greg Wonder / Antonio Coímbra
April Clough
— Olympia Chavez
Harold Bergman
— Double Agency Director
C.V. Wood Jr.
— Police Officer
Dary Reis
— Van der Bosch
Nello Pazzafini
— Don Tango
José Van de Kamp
— Bernardo
Fernando Amaral
— Ángel Duarte
Roberto Roney
— Nadiño
Ataíde Arcoverde
— Vinicio
Claudioney Penedo
— Don Tango's Boss
Dennis Bourke
— Albert von Eisenburg
Giancarlo Bastianoni
— Tango's Thug / Mercenary (uncredited)
Sergio Smacchi
— Tango's Thug / Mercenary (uncredited)
Franco Ukmar
— Tango's Thug (uncredited)