Bud Spencer (Ben), Terence Hill (Kid), Patty Shepard (Liza), Deogratias Huerta (Attila), John Sharp (Der Boss), Manuel de Blas (Paganini), Luis Barbero (Jeremias), Donald Pleasence (Der Doktor), Emilio Laguna (Leiter), Omero Capanna (Bingo), Giancarlo Bastianoni (Gangster auf der Party), Roberto Alessandri (Boxer im Fitnessstudio), Manuel Mateos (Boxer im Fitnessstudio), Rocco Lerro (Gymnast), Rafael Albaicín (Gymnast), Giovanni Cianfriglia (Gymnast), José Yepes (Gymnast), José Luis Lizalde (Gymnast), Enzo Maggio (Gymnast)