He-Man in black magic and all forms of combat. He was also shown to be extremely cunning and intelligent. Though his origin was mysterious, and the cartoon described him only as a "demon from another dimension", a tie-in comic implied that Skeletor's true identity was Prince Keldor (the older brother of King Randor), thus making him He-Man's uncle. It was revealed in the animated motion picture "He-Man and She-Ra: The Secret of the Sword" that Skeletor was Hordak's right-hand man until his capture (Hordak referred to Skeletor as "my old pupil" and Skeletor's throne-room in Snake Mountain as "my old throne-room"
Evil twin usages were in fact in westerns. Two episodes entitled "Deadly Image" appeared within a year of each other on two different westerns. "Maverick's" version appeared in March 1961, followed swiftly by "The Rifleman's" take in February 1962. Beyond the coincidence of name, both offered similar plots: the hero becomes confused with a look-alike criminal, and the guilt of the hero must be cleared by demonstrating that the evil twin is a separate individual. "Pretty Little Liars" could be used as an example, where one of the main protagonists Spencer Hastings was discovered to have an evil identical twin sister named