Witch King Ringwraith

Although defeated by Princess Eowyn, the dreaded Witch King of Angmar has been brought back as well as his master.

The Witch King is the leader of the Ringwraiths and is responsible for leading the attack on Carleton, where Angewomon was raised. He also appeared to Angewomon when she took her Trial of Soul.

The helmet that he wears is, in fact, the iron crown that Morgoth wore.