Universal Monsters was a concept that began with the silent films starring which American stage actor?
Universal Monsters:  They began with "The Hunchback of Notre Dame" and "The Phantom of the Opera", both silent films starring Lon Chaney. Lon Chaney: Leonidas Frank "Lon" Chaney (April 1, 1883 – August 26, 1930) was an American stage and film actor, make-up artist, director and screenwriter.
Leonidas Frank "Lon" Chaney