The Fireball

Mickey Rooney

Johnny Casar

Pat O'Brien

Father O'Hara

Beverly Tyler

Mary Reeves

James Brown

Allen

Ralph Dumke

Bruno Crystal

Milburn Stone

Jeff Davis

Bert Begley

Shilling

Marilyn Monroe

Polly

Sam Flint

Dr. Barton

Glenn Corbett

Mack Miller

John Hedloe

Ullman

James Anderson

Strong Arm Man (uncredited)

Al Hill

Policeman (uncredited)

Lois James

Roller Derby Girl (uncredited)

Kenner G. Kemp

Roller Derby Spectator (uncredited)

Frank Mills

Roller Derby Spectator (uncredited)