Frank Martin
Police Commissioner
Dr. Robert Matthews
Arthur Welt
Dr. Chambers
Castle owner
Ulianov
Duca Lamberti
Betto
Red Wiley
Guido Nervi
Buddy Ben / Bear
Frank Donovan
Vallauri
Captain Lynch
Dr. Giulio
Brett McBain
Edwin Kean
Ramirez
Sheriff Burnett
Paola's husband
Narrator / Self
Commendatore / Mister Eat it
Bill San Antonio
Joshua Tracy/The Black One
Paul Lefèvre
Aguilar
Charlie Morgan
Jim/Trevor Norton
Ivan Mikhailovic
Eli
Quartermaster Sergeant
Truck Driver
Vartan Damadian
Antonio
Count Galeazzo Ciano
Salvatore
Gaspare Pisciotta
Proximates the Tyrant
Bearded Man (uncredited)
Sgt. Potter
Alexander Ward
First Delivery Man
Henchman