

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)