Witch-king

Er-Mûrazôr (A. "The Black Prince") was the second son of King Tar-Ciryatan. Although the Prince grew to be one of the most influential individuals in the Númenórean court, he coveted a realm of his own. His greed provided Sauron with an avenue to Mûrazôr 's trust. Travelling to Barad-dûr, the Prince became the student of the Dark Lord and eventually accepted the first of the Nine Rings of Power. Of all the Nine, Mûrazôr became the mightiest. Under the Lord of the Rings, he was given all the trappings of a King. No minion enjoyed more of the Dark Lord's favor.