Sauron (Earth-1943)

Sauron, Lord of the Rings, born Mairon, was a fallen Maiar, apprentice of Melkor, and the creator of the One Ring. Following Melkor's failed attempt to conquer Nirn and his death during the First Age, Sauron took upon his master's footsteps as the new Dark Lord, as well as his past objectives of dominion. Though to be dead for millenia after the War of the Last Alliance where he was presumably slain by Isildur, Sauron's soul laid dormant for the next millenia, searching for his ring that wasn't destroyed in order to conclude his plans.