Charles Murray
— McDoo
Gus Pixley
— The Wild Man
Dorothy Gish
— Miss Smart / Sideshow Patron
Edward Dillon
— Rooly, Pooly, Dooly
Florence Lee
— Actress in The Rise & Fall of McDoo
Lionel Barrymore
— In Audience (uncredited)
Clarence Barr
— Guppy (of Guppy and Fugg)
Bud Duncan
— Fugg (of Guppy and Fugg) / Sideshow Patron
Kathleen Butler
— Actress in The Rise & Fall of McDoo
William J. Butler
— Policeman / In Audience