John Bartha
Police Chief
Bud Spencer
Sheriff Hall
Sergio Smacchi
Cop
Carlo Reali
Lieutenant Turner
Giovanni Cianfriglia
Alien
Salvatore Basile
Cop in Jail (uncredited)
Giuseppe Pedersoli
Passerby greeting the sheriff (uncredited)
Cary Guffey
H7-25 (aka Charlie Warren)
Ferruccio Amendola
Howard, City Mayor
Claudio Undari
Alien Boss
Ottaviano Dell'Acqua
Cop
Marco Stefanelli
Cop with black eye
Riccardo Pizzuti
First Woodcutter
Bill Crabb
Henry Coleman (uncredited)
Ted Henning
Military adviser (uncredited)
Edy Biagetti
Bank director (uncredited)
Paolo Figlia
One of the Brother's Dynamite
Lorenzo Fineschi
Second Woodcutter
Enzo Maggio
Cop
Lawrence Montaigne
Military Sergeant
Larry Quackenbush
Doctor
Burton Slade
Dusty Newman (uncredited)