Joe Palooka, Champ

Michael Mark

Herman (Pop) Palooka

Philip Van Zandt

Freddie Wells

J. Farrell MacDonald

Long-Count Bowman

Robert Kent

Ronnie Brewster

Joe Sawyer

Lefty

Lou Nova

Al Costa

Elisha Cook Jr.

Eugene

Eduardo Ciannelli

Florini

Eddie Gribbon

Louie, the Louisiana Lion

Betty Blythe

Mrs. Stafford

Emmett Vogan

Fight Commissioner

Sarah Padden

Mom Palooka

Joe Kirkwood Jr.

Joe Palooka

Leon Errol

Knobby Walsh

Elyse Knox

Anne Howe

Jack Roper

Waldo, the Wyoming Wildcat

Reginald Le Borg

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Sam Hayes

Radio Announcer

Warren Hymer

Ira Eyler

Joe Louis

Himself

Sam McDaniel

Smoky

Carol Hughes

Mrs. Van Pragg

Manuel Ángeles Ortiz

Manuel Ortiz

Henry Armstrong

Henry Armstrong

Jo Ann Marlowe

Rosie Palooka

Jimmy McLarnin

Jimmy McLarnin

Roger Daniel

Roger Daniel

Ceferino García

Ceferino Garcia

Dave Willock

Mr. Rodney

John Kelly

Sammy

Carole Donne

Mrs. Oberlander

Russ Vincent

Curly