Judge of the Dead and the Master of Doom. Originally named Námo, but referred to more commonly as Mandos, after the halls of his dwelling. Chief advisor to Manwë and keeper of the souls of elves. He is the husband of Vairë the Weaver. Mandos is described as being stern and dispassionate and never forgetting a thing.
He was the Vala who spoke the Prophecy of the North against the Noldor leaving Aman, and who counselled that they should not be allowed to return. But unlike Morgoth, his Dooms are not cruel or vindictive by his own design. They are simply the will of Eru, and he will not speak them unless he is commanded to do so by Manwë. Only once has he been moved to pity, when Lúthien sang of the grief she and her lover Beren had experienced in Beleriand.