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 now available on Netflix. The show takes place on the fictional planet of Eternia, a planet of magic, myth and fantasy. Its lead character is Prince Adam, the young son of Eternia's rulers, King Randor and Queen Marlena. Whenever Prince Adam holds the Sword of Power aloft and proclaims "By the Power of Grayskull!" he is endowed with "fabulous secret powers" and transformed into He-Man, the most powerful man in the universe. Together with his close allies, Battle Cat (who undergoes a similar transformation from being Adam's cowardly pet tiger Cringer), The Sorceress, Teela, Man-At-Arms and Orko, He-Man uses his