He-Man and the Masters of the Universe powers to defend Eternia from the evil forces of Skeletor. Skeletor's main goal is to conquer the mysterious fortress of Castle Grayskull, from which He-Man draws his powers. If successful, Skeletor would have enough power to rule all of Eternia and possibly the entire universe. The Mattel company released the original He-Man action figure in 1982; the franchise backstory was developed by the Filmation animation studio. On 1 December 1982, Michael Halperin wrote a "series bible". Some time after, both firms pitched the idea to the ABC network, who turned it down. The resulting series, "He-Man and the Masters of
He-Man laser-gun in the film and the mini-comics, a battle axe, a shield, and other equipment - including vehicles) while battling his foes. His sword, apparently indestructible, could deflect bolts of energy. His sister Adora's Sword of Protection was not entirely indestructible; the stone in the hilt was once damaged, preventing her from transforming. In addition, the sword gave him the ability to transform from Prince Adam into He-Man (and back) by utilizing the powers of Castle Grayskull. He also uses his sword to transform Cringer into Battle Cat. In the earliest versions of the story (for example, the first four