Lungorthin
From Tolkien Gateway
Template:Disputedcanon Lungorthin was a Balrog in early stages of The Silmarillion. He is not mentioned in the later Silmarillion, or the published Simarillion.
Life
Lungorthin was encased in white flames, rather than red. Drawn to Melkor's splendour before history he was entrusted with the infamous role of Master of the Guard beneath Thangorodrim. His fate is unknown, though it is likely he perished during the destruction of Angband.