He-Man Power Sword; Skeletor had the second half, and used it as his main weapon. When joined, the two halves of the Power Sword will provide the key to Castle Grayskull (this is why the two figures' swords could combine into one, when the action figures were initially released). In one early illustrated story, He-Man and Skeletor united their two Power Sword halves to form the true Power Sword, defeating a common enemy. In June 2012, DC Comics began publishing a six-issue limited series, "He-Man and the Masters of the Universe", alongside the weekly digital first series "Masters of the Universe".
He-Man be a descendant of King Grayskull (a powerful barbarian and a hero from Eternia's ancient past), who sacrificed his life in order to save Eternia from the Evil Horde and originally wielded the Sword of Power. He was the original owner of Castle Grayskull; his sword was concealed in the castle for centuries before being given to Prince Adam, who inherited his ancestor's own power channeled through the sword (thus giving added meaning to the phrase "By the power of Grayskull..."). This action-figure line combined elements from the He-Man universe into a cohesive storyline with biographies on the figures' packaging.