Arms dealer Yolaf Peterson aims to make a sale to guerilla Mongo, but the money is locked in a bank safe, the combination known only to Professor Xantos, a prisoner of the Americans. Yolaf agrees to free Xantos, accompanied by reluctant guerilla Basco, but a former business partner of Yolaf's- John 'The Wooden Hand', has other ideas.
Franco Nero
Yodlaf Peterson
Tomas Milian
El Vasco
Jack Palance
John
Fernando Rey
Prof. Xantos
Iris Berben
Lola
José Bódalo
General Mongo Alvarez
Karin Schubert
Zaire Harris
Eduardo Fajardo
Colonel
Gino Pernice
Tourneur
Tito García
Tiger
Gérard Tichy
Lieutenant
Lorenzo Robledo
Captain Jim
Álvaro de Luna
John's Henchman
Jesús Fernández
Teenage Xantista
Claudio Scarchilli
Mexican Officer
Giovanni Petti
Mexican Border Officer
Gianni Pulone
John's Henchman
Rafael Albaicín
Mongo Henchman (uncredited)
Simón Arriaga
Mongo Henchman (uncredited)
José Canalejas
Mongo Henchman (uncredited)
Cantori Moderni Di Alessandroni
Choir Member (uncredited)
Ramón Fernández Tejela
Xantista (uncredited)
Víctor Israel
Rosenbloom Henchman with Brown Suit (uncredited)
José Luis Lizalde
Cantina Barman (uncredited)
José Marco
Fort Yuma Corporal (uncredited)
Antonio Padilla
Mongo Henchman (uncredited)
Joaquín Parra
Mexican Patrol Lieutenant (uncredited)
Vicente Roca
Rosenbloom Henchman with Tropical Hat (uncredited)