The Great Deceiver
Gorthaur
First of the Captains of Angband
....Master....
Sauron
Originally a Maia of Aulë named "Mairon", he was ensnared by Melkor and as "Gorthaur" he became Morgoth's lieutenant in his Wars of Beleriand. (Source: The Silmarillion)
Tolkien Gateway: Sauron