Non c'è due senza quattro

Eliot Vance / Bastiano Coimbra de la Coronilla y Azevedo

Managing director of the 'double agency'

Officier de police

Chef des mercenaires (as Dary Reiz)

Tango

Majordome (as Jose' Van de Kamp)

Secrétaire

Nadino

Vinicio (as Ataide Arcoverde)

Doctor

Tango's Thug / Mercenary (uncredited)

Tango's Thug / Mercenary (uncredited)

Tango's Thug / Mercenary (uncredited)

Tango's Thug (uncredited)

Terence Hill and Bud Spencer play dual roles in this movie.

The birth names of Terence Hill and Bud Spencer are Mario Girotti and Carlo Pedersoli respectively.

Sixteenth movie collaboration of Italian comedy duo Terence Hill and Bud Spencer.

When Antonio arrives at the airport to discover his car has had flames painted on it, lighting equipment can be seen reflected in the car's rear passenger side window while the door is being opened.

When Eliot Vance and Greg Wonder are talking in a soccer stadium, they are with the "Vasco da Gama" crowd. After the the goal (footage) they all cheer. But that goal happened in the 1984 Brazilian Soccer Championship final (May,24 1984 at Maracanã Stadium, Rio de Janeiro) made by Vasco's oponent team: "Fluminense".

Eliot Vance: The fact that he calls himself Tango in the land of Samba, tells us he's a complete idiot.

Eliot Vance: [viewing the photos] And this is Zefa, the cook!