Knobby Walsh
Leon Errol
Joe Palooka
Joe Kirkwood Jr.
Captain Lance
Douglass Dumbrille
Thurston
Douglas Fowley
Canvasback
Eddie Gribbon
Angelo Cardona
Sonny Chorre
Dr. Colman
Ralph Graves
Announcer
Martín Garralaga
Bellboy
Roland Dupree
Nurse
Gertrude Messinger
Pedro
John Hart
Steward
Robert Conway
Anne Howe
Elyse Knox
Fight Referee
John Indrisano
Joe Herrera
Spanish Handler
Roy Aversa
Attendant
Johnny Casino
Museum Caretaker
Pedro de Cordoba
Policeman
Frank Ellis
Messenger
William Roy
Kern
Paul Stader
Arena Policeman
Wally West
Anton Kindel
Marcel Journet
Myra Madison
Sheila Ryan
Chick Bennett
Harry Lewis
Looie
Frank Sully
Professor Lilliquist
Ian Wolfe
Fight Announcer
Sam Hayes
Austin
Walter Sande
Director
Reginald Le Borg
Screenplay
Cy Endfield
Original Story
Associate Producer
Bernard W. Burton
Art Direction
Dave Milton
Producer
Hal E. Chester
Editor
Warren Adams
Otho Lovering
Henry Blankfort
Set Decoration
Raymond Boltz Jr.
Director of Photography
William A. Sickner
Comic Book
Ham Fisher
Makeup Artist
Charles Huber
Script Supervisor
Ilona Vas
Assistant Director
William A. Calihan Jr.
Music Director
Edward J. Kay
Production Manager
Allen K. Wood
Still Photographer
Al St. Hilaire
Camera Operator
William Margulies
Sound
Tom Lambert
Gaffer
Lloyd Garnell
Grip
Grant Tucker