Three Ages

Buster Keaton

The Boy

Margaret Leahy

The Girl

Wallace Beery

The Villain

Joe Roberts

The Girl's Father

Lillian Lawrence

The Girl's Mother

Kewpie Morgan

The Emperor / Cave Man / Roman Thug

Lionel Belmore

Undetermined Role (uncredited) (unconfirmed)

George Davis

Roman Guard Knocked Down (uncredited)

Louise Emmons

Old Fortune Teller (uncredited)

Blanche Payson

The Amazon (uncredited)