 | Paolo Villaggio als Giandomenico Fracchia / La Belva Umana |
 | Lino Banfi als Commissario Auricchio |
 | Anna Mazzamauro als Signorina Corvino |
 | Gigi Reder als Madre della Belva Umana |
 | Massimo Boldi als Pera |
 | Francesco Salvi als Neuro |
 | Sandro Ghiani als De Simone |
 | Antonio Allocca als Ufficiale dei Carabinieri |
 | Jole Silvani als Palmira |
 | Fiammetta Baralla als Cicciona che fa footing |
 | Ugo Bologna als Direttore della banca |
 | Giulio Farnese als Controllore dell'Aldilà |
 | Renzo Rinaldi als Colonnello dei Carabinieri |
 | Renato Cecchetto als Comandante della Digos |
 | Roberto Della Casa als Tino |
 | Gianni Agus als Dott. Orimbelli |
 | Giulio Massimini als Poliziotto |
 | Ennio Antonelli als Cameriere |
 | Alfonso Giganti als poliziotto |
 | Nicola Di Gioia als Uomo con coltello |
| Antonio Pane als Bank Employee (uncredited) |
| Neri Parenti | Director |
| Claudio Saraceni | Producer |
| Fred Bongusto | Original Music Composer |
| Sergio Montanari | Editor |
| Mario Ambrosino | Costume Design |
| Giovanni Manganelli | Story |
| Leonardo Benvenuti | Screenplay |
| Piero De Bernardi | Screenplay |
| Giovanni Manganelli | Screenplay |
| Neri Parenti | Screenplay |
| Paolo Villaggio | Screenplay |
| Alberto Spagnoli | Director of Photography |
| Giantito Burchiellaro | Production Design |
| Marina Mattoli | First Assistant Director |
| José Mascolo | Conductor |
| Paolo Vandini | Line Producer |
| Bruno Altissimi | Producer |
| Vivien Boden | Unit Manager |
| Nereo Salustri | Unit Manager |
| Mario Bernacchia | Production Secretary |
| Francesco Benvenuti | Production Secretary |
| Leonardo Curreri | Administration |
| Carlo Tafani | Camera Operator |
| Giancarlo Granatelli | Assistant Camera |
| Eleonora Pallottini | Script Supervisor |
| Bruno Rukauer | Still Photographer |
| Massimo Quaglia | Assistant Editor |
| Vittorio Massi | Sound |
| Giulio Viggiani | Boom Operator |
| Rosanna Andreoni | Assistant Costume Designer |
| Antonia Rubeo | Assistant Production Design |
| Gianfranco Mecacci | Makeup Artist |
| Mirella Ginnoto | Hairstylist |
| Pasquino Benassati | Special Effects |
| Alberto Emidi | Key Grip |
| Fernando Massaccesi | Gaffer |
| Antonio Ferri | Property Master |
| Massimo Anzellotti | Foley Artist |
