| Cast list | | Terence Hill | as | Kid | | Bud Spencer | as | Ben | | Patty Shepard | as | Liza (as Paty Shepard) | | Deogratias Huerta | as | Attila (as Deogracias Huerta) | | John Sharp | as | The Boss | | Manuel de Blas | as | Paganini | | Luis Barbero | as | Jeremias | | Donald Pleasence | as | The Doctor | | Emilio Laguna | as | Conductor | | Rafael Albaicín | as | (as Rafael Albaicin) | | Giancarlo Bastianoni | as | Gymnast | | José Yepes | as | (as Jose Yepes) | | Inés Morales | as | (as Ines Morales) |
| | Crew list: | | Marcello Fondato (Director) | | Vicente Coello (Writer) | | Jesús R. Folgar (Writer) |
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