| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alberto Boccianti | Crew | Art | Art Direction |
 Alejandro Ulloa | Crew | Camera | Director of Photography |
 Carlo Ponti | Crew | Production | Producer |
Eduardo Noé | Crew | Camera | Camera Operator |
Emilio Ruiz del Río | Crew | Visual Effects | Visual Effects |
Enrico Job | Crew | Costume & Make-Up | Costume Design |
 Enzo G. Castellari | Crew | Directing | Director |
Giancarlo Pettini | Crew | Production | Executive Producer |
Gianfranco Plenizio | Crew | Sound | Conductor |
Gianni D'Amico | Crew | Sound | Sound Mixer |
Gino Zamprioli | Crew | Costume & Make-Up | Makeup Artist |
 Guido De Angelis | Crew | Sound | Music |
Gumersindo Andrés | Crew | Art | Assistant Art Director |
 Luciano Vincenzoni | Crew | Writing | Screenplay, Story |
Luis Gómez Valdivieso | Crew | Directing | Assistant Director |
Mario Maffei | Crew | Directing | Second Unit Director |
 Massimo Vanni | Crew | Crew | Stunts |
 Maurizio De Angelis | Crew | Sound | Music |
 Nazzareno Zamperla | Crew | Crew | Stunt Coordinator |
Roberto Girometti | Crew | Camera | Camera Operator |
 Rocco Lerro | Crew | Crew | Stunts, Master at Arms |
 Sergio Donati | Crew | Writing | Story, Screenplay |
Zev Braun | Crew | Production | Producer |
Gianfranco Amicucci | Crew | Editing | Editor |
Giusy Bovino | Crew | Costume & Make-Up | Hairstylist |
Valentín Panero | Crew | Production | Production Manager |
Maria Luisa Merci | Crew | Directing | Script Supervisor |
Cesarina Casini | Crew | Editing | Assistant Editor |
Guillermo Peña | Crew | Camera | Assistant Camera |
Walter Cossu | Crew | Costume & Make-Up | Makeup Artist |
Luis López | Crew | Sound | Sound Engineer |
María Luisa Pino | Crew | Editing | Assistant Editor |
Juan Manuel Torres | Crew | Crew | Stunts |
Tonino Cacciottolo | Crew | Sound | Sound Effects |
Benito Persico | Crew | Costume & Make-Up | Assistant Costume Designer |
Antonio Parra | Crew | Crew | Special Effects |
Ronald A. Tash | Crew | Production | Executive Producer |
Alejandro de Enciso | Cast | John (uncredited) | |
 Antonio Pica | Cast | Actor | Hal Foster (uncredited) |
 Charly Bravo | Cast | Actor | Judd (uncredited) |
 Dan van Husen | Cast | Actor | Deputy Zachary |
 Daniel Martín | Cast | Actor | Jim (uncredited) |
 David Warbeck | Cast | Actor | Villain with Sunglasses (uncredited) |
 Dick Butkus | Cast | Actor | Jeff |
 Duilio Cruciani | Cast | Actor | Cal 'Caligola' Foster |
 Emma Cohen | Cast | Actress | Mary Ann |
Enzo G. Castellari | Cast | Actor | Deputy Sheriff (uncredited) |
 Franco Nero | Cast | Actor | Onion Stark |
 George Rigaud | Cast | Actor | Terrateniente (uncredited) |
Helmut Brasch | Cast | Actor | Deputy Sheriff |
 Leo Anchóriz | Cast | Actor | Sheriff |
Lucy Tiller | Cast | Violet (uncredited) | |
 Manuel Zarzo | Cast | Actor | Jack (uncredited) |
 Mariano Vidal Molina | Cast | Actor | Owen (uncredited) |
 Martin Balsam | Cast | Actor | Petrus Lamb |
Massimo Vanni | Cast | Actor | Buck, Lamb Henchman |
Nazzareno Zamperla | Cast | Actor | Oblò |
 Romano Puppo | Cast | Actor | 'Nerone' Foster |
 Sterling Hayden | Cast | Actor | Henry 'Jack' Pullitzer |
 Wal Davis | Cast | Actor | Zeke |
 Xan das Bolas | Cast | Actor | Sam - Merchant (uncredited) |
Agustín Bescos | Cast | Actor | Oil Board Member (uncredited) |
Fernando Castro | Cast | Dutch Foster | |
Leopold Francis | Cast | Mack (uncredited) | |
| Person | Type | Job | Role(s) |
