Sergio Corbucci Director, Writer Jesus Fernandez Actor Franco Nero Yodlaf Peterson Actor Tomas Milian El Vasco Actor Jack Palance John Actor Fernando Rey Prof. Xantos Actor Iris Berben Lola Actor Francisco Bodalo Gen. Mongo Actor Eduardo Fajardo Colonel Actor Álvaro de Luna John's Henchman Actor Massimo De Rita Writer José Frade Writer Arduino Maiuri Writer Fritz Ebert Screenwriter Dino Maiuri Screenwriter Antonio Morelli Executive Producer Stan Gelt Executive Producer Alejandro Ulloa Cinematographer Eugenio Alabiso Film Editing Ennio Morricone Music Adolfo Cofiño Production Design Jürgen Henze Costume Design