Iron Man

A Pig Iron Jaw and a Mule Kick Got Him the Paper Crown.

Prizefighter Mason loses his opening fight so wife Rose leaves him for Hollywood. Without her around Mason trains and starts winning. Rose comes back and wants Mason to dump his manager Regan and replace him with her secret lover Lewis.

Drama

Lew Ayres

(Kid Mason)

Robert Armstrong

(George Regan)

Jean Harlow

(Rose Mason)

John Miljan

(Paul H. Lewis)

Edward Dillon

(Jeff)

Mike Donlin

(McNeil)

Morrie Cohan

(Rattler O'Keefe)

Mary Doran

(Showgirl)

Mildred Van Dorn

(Gladys DeVere)

Ned Sparks

(Riley)

Sammy Blum

(Mandel)

Bess Flowers

(Party Guest)

Claire Whitney

(Louise Lewis)

Heinie Conklin

(Prizefight Second (uncredited))

Tom Kennedy

(Bartender (uncredited))

John George

(Card Player (uncredited))