Lon Chaney
饰 Professor Echo / Granny O'Grady
Mae Busch
饰 Rosie O'Grady
Matt Moore
饰 Hector McDonald
Victor McLaglen
饰 Hercules
Harry Earles
饰 Tweedledee aka Little Willie
Matthew Betz
饰 Detective Regan
William Humphrey
饰 Attorney for Defense
E. Alyn Warren
饰 Prosecuting Attorney
Margie Angus
饰 Twin (uncredited)
Mary Angus
饰 Twin (uncredited)
Walter P. Cole
饰 Human Skeleton (uncredited)
Carrie Daumery
饰 Pet Shop Customer (uncredited)
Delmo Fritz
饰 Sword Swallower (uncredited)
Alice Julian
饰 Fat Lady (uncredited)
Peter Kortes
饰 Sword Swallower (uncredited)
Mickey McBan
饰 Boy Watching Hercules' Act (uncredited)
Wilmuth Merkyl
饰 Jeweler (uncredited)
John Millerta
饰 Wild Borneo Man (uncredited)
Louis Morrison
饰 Police Commissioner (uncredited)
