Skeletor is the primary antagonist in the animated series 'He-Man and the Masters of the Universe.' With his skull-like face and hooded robe, he is a menacing and iconic villain. Skeletor aspires to conquer the magical world of Eternia and the fortress of Castle Grayskull. His character is known for being cunning, ruthless, and possessing dark magical powers. Despite his evil plans, Skeletor often fails due to his own arrogance and the heroic efforts of He-Man and his allies. His relentless pursuit of power and control makes him a formidable foe throughout the series.