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)