- Bud Abbott
- Bud Alexander
- Lou Costello
- Lou Francis
- Nancy Guild
- Helen Gray
- Arthur Franz
- Tommy Nelson
- Adele Jergens
- Boots Marsden
- Sheldon Leonard
- Morgan
- William Frawley
- Detective Roberts
- Gavin Muir
- Dr. Philip Gray
- Sam Balter
- Radio Announcer
- John Daheim
- Rocky Hanlon
- Walter F. Appler
- Professor Dugan
- Howard Banks
- Officer
- Bobby Barber
- Sneaky
- Richard Bartell
- Bald Man
- Phil Bloom
- Fight Spectator
- John Breen
- Trainer
- Milt Bronson
- Ring Announcer
- Ralph Brooks
- Man at Bar
- Steve Carruthers
- Reporter
- Tom Coleman
- Dugan Detective School Graduate
- Chester Conklin
- Counter man
- Bing Conley
- Trainer
- Russ Conway
- Newspaperman
- Paul Cristo
- Fight Spectator
- Frank Dae
- Col. Duffie
- Roy Darmour
- Man
- Sayre Dearing
- Reporter
- Jack Deery
- Hospital Visitor
- Jimmy Dime
- Man In Gym
- Ralph Dunn
- Motorcycle Cop
- George Ford
- Reporter
- Edward Gargan
- Milt
- Harold Goodwin
- Bartender
- Dick Gordon
- Man
- Kit Guard
- Fighter on Rowing Machine
- Bobbie Hale
- Graduation Spectator
- Chuck Hamilton
- Policeman
- Stuart Holmes
- Fight Spectator
- Kenner G. Kemp
- Policeman
- Johnny Kern
- Trainer
- Donald Kerr
- Fight Spectator
- Perc Launders
- Cop
- George J. Lewis
- Torpedo Al
- Rory Mallinson
- Tough Guy at Bar
- Paul Maxey
- Dr. Turner
- Mathew McCue
- Graduation Spectator
- Hans Moebus
- Restaurant Patron
- Ralph Montgomery
- Photographer
- Mike Morelli
- Training Spectator
- William H. O'Brien
- Fight Spectator
- Monty O'Grady
- Fight Spectator
- Franklin Parker
- Photographer
- Jack Perrin
- Dugan Detective School Graduate
- Jack Perry
- Rocky's Handler
- Victor Romito
- Waiter
- Clark Ross
- Fight Spectator
- Syd Saylor
- Waiter
- Sammy Shack
- Fighter
- Edith Sheets
- Nurse
- Jack Shutta
- Attendant
- Carl Sklover
- Lou's Handler
- Billy Snyder
- Newspaperman
- Brick Sullivan
- Dugan Detective School Graduate
- Frankie Van
- Referee
- Herb Vigran
- Stillwell
- Billy Wayne
- Rooney - Rocky's Manager
