 | Vincent Cartier als Self, Walter's twin brother and manager |
| Walter Cartier als Self |
| Nat Fleischer als Self, boxing historian |
| Bobby James als Self, Walter's opponent |
| Judy Singer als Self, female fan in crowd (uncredited) |
 | Stanley Kubrick als Self (man at ringside with camera) (uncredited) |
| Alexander Singer als Self |
 | Douglas Edwards als Narrator |
| Stanley Kubrick | Director |
| Stanley Kubrick | Producer |
| Gerald Fried | Music |
| Robert Rein | Script |
| Julian Bergman | Editor |
| Alexander Singer | Assistant Director |
| Stanley Kubrick | Director of Photography |
