Roscoe 'Fatty' Arbuckle

Fatty

Minta Durfee

Fatty's Sweetheart

Al St. John

Fatty's Rival

Frank Hayes

One Lung

Charley Chase

Fight Spectator / Man at the Dance (uncredited)

Dixie Chene

Social Club Girl (uncredited)

Edward F. Cline

Gymnasium Man (uncredited)

Harry McCoy

Pianist (uncredited)