Sauron

Sauron is the primary antagonist of J.R.R. Tolkien's The Lord of the Rings, also appearing in The Hobbit and The Silmarillion. A fallen Maia spirit and the Dark Lord of Mordor, he is the creator of the One Ring, into which he poured much of his own power, and which the hobbit Frodo Baggins must destroy to bring about Sauron's final defeat. He has been depicted on film by Peter Jackson's Lord of the Rings trilogy and on television in The Rings of Power (Wikipedia)