The Lord of the Nazgûl, also known as the Witch-king of Angmar, was the leader of the Nazgûl (Ringwraiths) and Sauron's second-in-command in the Second and Third Ages. " - The Return of the King, " The Battle of the Pelennor Fields" now he was come again, bringing ruin, turning hope to despair, and victory to death. A crown of steel he bore, but between rim and robe naught was there to see, save only a deadly gleam of eyes: the Lord of the Nazgûl.
John Stephenson (The Return of the King), Andy Serkis (The Fellowship of the Ring) " Upon it sat a shape, black-mantled, huge and threatening.