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"
He-Man and the Masters of the Universe is considered the most successful animated series ever made by Filmation. The show was often criticized by parent groups as a cartoon designed to advertise action figures. In 2009, IGN ranked the series as the 58th greatest animated show of all time in their Top 100 list. BCI Eclipse LLC (under its "Ink & Paint" classic animation entertainment label) (under license from Entertainment Rights) released all 130 episodes of the original 1983 series of "He-Man and the Masters of the Universe" on DVD in Region 1 in 2005/2006, in 4 volume sets. Each episode on BCI Ink & Paint's "He-Man