Skeletor (Revelation)

Skeletor as he appears in Masters of the Universe: Revelation.

Quest for Power
The evil Skeletor, who had ever tried to learn the secret of Castle Grayskull for years, somehow took control of the extra-dimensional creature the Orlax of Primeria by combining his magical powers with his accomplice Evil-Lyn. They were trying to translate the Orlax's warning and learn reason why it came to Eternia half a millennium earlier. However, they took advange of the creature's fatal touch by sending it into the Royal Palace of Eternos as well, where one of its tentacles came into contact with King Randor, who fell into a coma.

Skeletor eventually discovered that Castle Grayskull was just a shell, and that its sole purpose was to guard the Orb of Power. The Lord of Destruction used the Shaping Staff to disguise himself as one of his henchmen, Spikor and together with Evil-Lyn, disguised as Clawful, pretended to have been captured by He-Man (in reality the robot Faker). This deception managed to dupe the Sorceress long enough for the Evil Warriors to enter Grayskull, after which Skeletor ordered the rest of his forces to launch a full scale attack on the castle, in order to engage the Heroic Warriors and Royal Guards who were bound to come to Grayskull's defense.

Quickly gaining access to the very heart of Grayskull, Skeletor defeated the powerful Nature God Moss Man and maneuvered He-Man into stabbing him with his mighty sword in such a way that the sword would penetrate the Orb of Power as well and open it as if it were a key. Skeletor struck the orb with his own Havoc Staff afterwards, cracking it and releasing the magic power that created Eternia and the very universe.

The Sorceress knew that this meant the end of all existence, but was able to freeze time for a short period so that she could confer with He-Man and Teela. He-Man attempted to absorb the magical energy of the Orb with his Sword of Power, which split in two. When this happened, his noble steed Battle Cat transformed back into Cringer and He-Man reverted back to Prince Adam. Skeletor attempted to grab the two halves of the sword for himself, and both he and Adam were obliterated in the explosion caused by the magical impact. The only thing which remained was the top of Skeletor's Havoc Staff.

Only a tiny sliver of Skeletor's essence survived the explosion, and took refugee in Evil-Lyn's wand staff without her knowledge. Teela went on a quest to recover the two halves of the Sword of Power and reforge them into one. Evil-Lyn, carrying her wand, and her protector Beast Man were among the warriors who joined Teela. In the Eternian afterlife, Preternia, they were reunited with Adam, who gave up his everlasting reward to return to the land of the living so he could call upon the power of Grayskull and restore magic to the entire universe. When magic returned, Skeletor was finally able to reform himself, and stabbed Adam in the back before he could transform into He-Man. Skeletor took the Sword of Power afterwards, asked Evil-Lyn and Beast Man to join him at his side, and took the power of Grayskull for himself, becoming Skelegod.

Trivia

 * The opening narration in The Power of Grayskull describes Skeletor as a demon, which hearkens back to his backstory in the earliest mini-comics, rather than the origin that was developed in the late eighties that revealed Skeletor to have been born as Keldor, brother of King Randor.
 * Like in the live action movie, Skeletor made himself a god with the power of Grayskull and even said the line "Let this be our final battle !".

Dark Horse prequel comic

 * Masters of the Universe: Revelation No.1 (Dark Horse Comics) (cameo)
 * Masters of the Universe: Revelation No.2 (Dark Horse Comics)
 * Masters of the Universe: Revelation No.3 (Dark Horse Comics)
 * Masters of the Universe: Revelation No.4 (Dark Horse Comics)

Netflix series

 * The Power of Grayskull
 * The Most Dangerous Man in Eternia (Flashback)
 * The Forge at the Forest of Forever