| Person | Type | Job | Role(s) |
|---|---|---|---|
 Archie R. Dalzell | Crew | Camera | Camera Operator |
Daniel B. Ullman | Crew | Writing | Original Story |
Earl Snyder | Crew | Sound | Sound Effects |
Ernest Miller | Crew | Camera | Director of Photography |
 Frank McDonald | Crew | Directing | Director |
Frankie Van | Crew | Crew | Technical Supervisor |
Fred Preble | Crew | Art | Art Direction |
Glen Glenn | Crew | Sound | Sound Effects |
Hugh Winn | Crew | Editing | Editor |
Ira Webb | Crew | Production | Associate Producer |
June Carr | Crew | Production | Associate Producer |
Ray Mercer | Crew | Crew | Special Effects |
Robert L. Lippert | Crew | Production | Executive Producer |
 Ron Ormond | Crew | Production | Producer, Adaptation |
Ted Offenbecker | Crew | Art | Set Decoration |
Walter Greene | Crew | Sound | Music |
Paul Stanhope | Crew | Costume & Make-Up | Makeup Artist |
Gloria Welsch | Crew | Writing | Dialogue |
Moree Herring | Crew | Directing | Script Supervisor |
Donald S. Wakeling | Crew | Costume & Make-Up | Wardrobe Designer |
Edward Rebner | Crew | Sound | Musician |
 Charles Morton | Cast | Actor | Fight Spectator (uncredited) |
 Chester Clute | Cast | Actor | Timid Man |
Dan Tobey | Cast | Actor | Fight Announcer |
 Don Barry | Cast | Actor | Mike O'Hara, "King Cobra" |
Edit Angold | Cast | Actress | Mama Berger |
Frankie Van | Cast | Referee | |
 Harvey Parry | Cast | Actor | Bit Role (uncredited) |
 Jack Perry | Cast | Actor | Trainer (uncredited) |
James J. Casino | Cast | Actor | Boxer (uncredited) |
Jimmy Martin | Cast | Fight Second | |
Joey Adams | Cast | Actor | Duke Hensel |
John Breen | Cast | Actor | Fight Spectoator (uncredited) |
 John Cason | Cast | Actor | Tiger Johnson |
 Joseph Crehan | Cast | Actor | Oscar Brannigan |
 Lyle Talbot | Cast | Actor | Radio Announcer |
 Margia Dean | Cast | Actress | Joy White |
 Noble 'Kid' Chissell | Cast | Actor | Fight Spectator (uncredited) |
 Sam Flint | Cast | Actor | Doctor |
 Sheila Ryan | Cast | Actress | Janet 'J.L.' Brannigan |
 Stanley Price | Cast | Actor | Fight Spectator (uncredited) |
 Tom Brown | Cast | Actor | Joe O'Hara |
 William Edmunds | Cast | Actor | Professor Berger |
 Sol Murgi | Cast | Fight Spectator (uncredited) | |
 Michael Vallon | Cast | Bettor | |
 Al Bain | Cast | Actor | Fight Spectator (uncredited) |
Mark Plant | Cast | Gangster | |
Harry Brown | Cast | Fight Manager | |
Tony Canzoneri | Cast | Swinger Markham | |
Bobby Henshaw | Cast | Fight Spectator (uncredited) | |
Ned Roberts | Cast | Fighter (uncredited) | |
| Person | Type | Job | Role(s) |
