 | Bud Spencer als Sheriff Hall |
 | Cary Guffey als H7-25 (aka Charlie Warren) |
 | Ferruccio Amendola als Howard, City Mayor |
 | Claudio Undari als Alien Boss |
 | John Bartha als Police Chief |
 | Carlo Reali als Lieutenant Turner |
 | Giancarlo Bastianoni als One of the Brother's Dynamite / Masked Hooligan / Alien |
 | Giovanni Cianfriglia als Alien |
 | Ottaviano Dell'Acqua als Cop |
 | Paolo Figlia als One of the Brother's Dynamite |
 | Lorenzo Fineschi als Second Woodcutter |
 | Enzo Maggio als Cop |
 | Lawrence Montaigne als Military Sergeant |
 | Riccardo Pizzuti als First Woodcutter |
 | Larry Quackenbush als Doctor |
 | Sergio Smacchi als Cop |
 | Marco Stefanelli als Cop with black eye |
| Raffaele Mottola als Man Working for Army (uncredited) |
 | Ted Henning als Military adviser (uncredited) |
 | Burton Slade als Dusty Newman (uncredited) |
 | Bill Crabb als Henry Coleman (uncredited) |
 | Salvatore Basile als Cop in Jail (uncredited) |
 | Edy Biagetti als Bank director (uncredited) |
 | Giuseppe Pedersoli als Passerby greeting the sheriff (uncredited) |
| Michele Lupo | Director |
| Marcello Fondato | Screenplay |
| Guido De Angelis | Original Music Composer |
| Franco Di Giacomo | Director of Photography |
| Francesco Scardamaglia | Screenplay |
| Maurizio De Angelis | Original Music Composer |
| Eugenio Alabiso | Editor |
| Elio Scardamaglia | Producer |
| Luciano Sagoni | Costume Design |
| Francesco Scardamaglia | Co-Producer |
| Arduino Mercuri | Production Supervisor |
| Walter Patriarca | Production Design |
| Fausto De Lisio | Hair Designer |
| Ennio Di Meo | Production Supervisor |
| Salvatore Basile | Assistant Director |
| Lucio Bompani | Production Manager |
| Marcello Fondato | Story |
| Francesco Scardamaglia | Story |
| Marcello Fondato | Co-Producer |
| Luciano Giustini | Makeup Artist |
