Lon Chaney
饰 Professor Echo / Grandma O'Grady
Elliott Nugent
饰 Hector McDonald
Harry Earles
饰 Tweedledee aka Willie 'Midget'
John Miljan
饰 Prosecuting Attorney
Crauford Kent
饰 Defense Attorney
Trixie Friganza
饰 Lady Customer (uncredited)
Cecilia Parker
饰 First Siamese Twin (uncredited)
Linda Parker
饰 Second Siamese Twin (uncredited)
Ray Cooke
饰 Sailor at Sideshow (uncredited)
Jack Baxley
饰 Outside Sideshow Barker (uncredited)
