Skeletor is the main antagonist of the He-Man franchise, as well as He-Man's archenemy. His only goal is power, and to that end he will not rest until he possesses the secrets of Castle Grayskull, whereby he could become master of the universe. This places him in direct conflict with the only man powerful enough to stop him, He-Man.
Skeletor is a blue and muscular man, with his skull exposed and shrouded in a purple hood. Aside from that, he wears a purple loincloth and black underwear.
Skeletor possesses an array of mystic powers that seem to vary depending on the whims of the particular writer using him at the time, however all portray him as an extremely powerful sorcerer with control over a vast range of dark magical powers. He also possesses considerable scientific skill, and is shown to have skill in creating various machines and devices in the Filmation and New Adventures animated series. Though mainly a sorcerer, Skeletor is more than capable of physical combat, and has above average physical strength, as proven in numerous encounters with He-Man