Bud Abbott

Character: Bud Alexander

Lou Costello

Character: Lou Francis

Nancy Guild

Character: Helen Gray

Arthur Franz

Character: Tommy Nelson

Adele Jergens

Character: Boots Marsden

Sheldon Leonard

Character: Boots Morgan

William Frawley

Character: Det. Roberts

Gavin Muir

Character: Dr. Philip Gray

Sam Balter

Character: Radio Announcer

John Daheim

Character: Rocky Hanlon

Walter F. Appler

Character: Professor Dugan (uncredited)

Bobby Barber

Character: Sneaky (uncredited)

Howard Banks

Character: Officer (uncredited)

Richard Bartell

Character: Bald Man (uncredited)

Phil Bloom

Character: Fight Spectator (uncredited)

John Breen

Character: Trainer (uncredited)

Milt Bronson

Character: Ring Announcer (uncredited)

Ralph Brooks

Character: Man at Bar (uncredited)

Steve Carruthers

Character: Reporter (uncredited)

Tom Coleman

Character: Dugan Detective School Graduate (uncredited)

Chester Conklin

Character: Counter Man (uncredited)

Bing Conley

Character: Trainer (uncredited)

Russ Conway

Character: Newspaperman (uncredited)

Paul Cristo

Character: Fight Spectator (uncredited)

Frank Dae

Character: Col. Duffie (uncredited)

Roy Darmour

Character: Man (uncredited)

Sayre Dearing

Character: Reporter (uncredited)

Jack Deery

Character: Hospital Visitor (uncredited)

James Dime

Character: Man in Gym (uncredited)

Ralph Dunn

Character: Motorcycle Cop (uncredited)

George Ford

Character: Reporter (uncredited)

Edward Gargan

Character: Milt (uncredited)

Harold Goodwin

Character: Bartender (uncredited)

Dick Gordon

Character: Man (uncredited)

Kit Guard

Character: Fighter on Rowing Machine (uncredited)

Bobby Hale

Character: Graduation Spectator (uncredited)

Chuck Hamilton

Character: Policeman (uncredited)

Stuart Holmes

Character: Fight Spectator (uncredited)

Kenner G. Kemp

Character: Policeman (uncredited)

Johnny Kern

Character: Trainer (uncredited)

Donald Kerr

Character: Fight Spectator (uncredited)

Perc Launders

Character: Cop (uncredited)

George J. Lewis

Character: Torpedo Al (uncredited)

Rory Mallinson

Character: Tough Guy in Bar (uncredited)

Paul Maxey

Character: Dr. Turner (uncredited)

Mathew McCue

Character: Graduation Spectator (uncredited)

Hans Moebus

Character: Restaurant Patron (uncredited)

Ralph Montgomery

Character: Photographer (uncredited)

Mike Morelli

Character: Training Spectator (uncredited)

William H. O'Brien

Character: Fight Spectator (uncredited)

Monty O'Grady

Character: Fight Spectator (uncredited)

Franklin Parker

Character: Photographer (uncredited)

Jack Perrin

Character: Dugan Detective School Graduate (uncredited)

Jack Perry

Character: Rocky's Handler (uncredited)

Victor Romito

Character: Waiter (uncredited)

Clark Ross

Character: Fight Spectator (uncredited)

Syd Saylor

Character: Waiter (uncredited)

Sammy Shack

Character: Fighter (uncredited)

Edith Sheet

Character: Nurse (uncredited)

Jack Shutta

Character: Attendant (uncredited)

Carl Sklover

Character: Lou's Handler (uncredited)

Billy Snyder

Character: Newspaperman (uncredited)

Brick Sullivan

Character: Dugan Detective School Graduate (uncredited)

Frankie Van

Character: Referee (uncredited)

Herb Vigran

Character: Stillwell (uncredited)

Billy Wayne

Character: Rooney - Rocky's Manager (uncredited)