Ringwraiths

The Ringwraiths, also known as Nazgul, Black Riders or the Nine, are shades of nine mortal kings. They were enslaved by Sauron through their rings and are forced to do his bidding. The Ringwraiths were tasked with searching for the One Ring. They were eventually destroyed when the Ring was thrown into Mount Doom. They were led by the Witch-King.