Murlâm of Tol Súlereb

Morlammen was an Agent of Ûvatha the Nazgûl who controlled the Island of Tol Buruth.

Speculations
It is unknown if Ethacali of Rhûn was identical with Ethacali the Dark Mage of Rhudaur. if so, Ethacali might have become an Undead or used Morgûl-vampirism to stretch his lifespan until he became a mortal Ghoul, similar to Gollum, Malezar, Krûsnak, Maben, Urzahil and other semi-undead.