Lon Chaney
Professor Echo / Granny O'Grady
Matt Moore
Hector McDonald
Harry Earles
Tweedledee aka Little Willie
Matthew Betz
Detective Regan
William Humphrey
Attorney for Defense
E. Alyn Warren
Prosecuting Attorney
Margie Angus
Twin (uncredited)
Mary Angus
Twin (uncredited)
Walter P. Cole
Human Skeleton (uncredited)
Carrie Daumery
Pet Shop Customer (uncredited)
Delmo Fritz
Sword Swallower (uncredited)
Alice Julian
Fat Lady (uncredited)
Peter Kortes
Sword Swallower (uncredited)
Mickey McBan
Boy Watching Hercules' Act (uncredited)
Wilmuth Merkyl
Jeweler (uncredited)
John Millerta
Wild Borneo Man (uncredited)
Louis Morrison
Police Commissioner (uncredited)
Majorie Morton
Mrs. Arlington (uncredited)
Walter Perry
Dime Museum Announcer (uncredited)
Louis Shank
Newsboy (uncredited)
Vera Vance
Dancer (uncredited)
Charles Wellesley
John Arlington (uncredited)
Percy Williams
Butler (uncredited)