<P> In the First Age (as detailed in The Silmarillion) he was called the "Lord of Werewolves" of Tol - in - Gaurhoth . In the Second Age he assumed the name Annatar, which means "Lord of Gifts", and Aulendil, meaning "Friend of Aulë", as well as Artano, meaning "High - Smith", with which he assumed a new identity and tricked the Elves into working with him to create the Rings . In the Third Age he was known for a time as the Necromancer of Dol Guldur because his true identity was still unknown . </P> <P> Nowhere does Tolkien provide a detailed description of Sauron's appearance during any of his incarnations . </P> <P> According to The Silmarillion, Sauron was initially able to change his appearance at will . In the beginning he assumed a beautiful form, but after switching his allegiance to Morgoth, he took a sinister shape . In the First Age, Gorlim was at one point brought into "the dreadful presence of Sauron", but the only concrete hint about his appearance is a reference to his daunting eyes . </P> <P> As part of a plan to destroy Huan, Sauron took the form of the greatest werewolf in Middle - earth's history . When the plan backfired, he assumed a serpent - like form, and finally changed back "from monster to his own accustomed form". The implication is that his "accustomed form" was not, at least, overtly monstrous . It is understood to have been humanoid . </P>

Who is the eye in lord of the rings