Terence Hill as Elliot Vance / Sebastiano Coímbra

Bud Spencer as Greg Wonder / Antonio Coímbra

April Clough as Olympia Chavez

Harold Bergman as Double Agency Director

C.V. Wood Jr. as Police Officer

Dary Reis as Van der Bosch

Nello Pazzafini as Don Tango

José Van de Kamp as Bernardo

Fernando Amaral as Ángel Duarte

Roberto Roney as Nadiño

Ataíde Arcoverde as Vinicio

Claudioney Penedo as Don Tango's Boss

Dennis Bourke as Albert von Eisenburg

Giancarlo Bastianoni as Tango's Thug / Mercenary (uncredited)

Sergio Smacchi as Tango's Thug / Mercenary (uncredited)

Franco Ukmar as Tango's Thug (uncredited)