Lungorthin

Lungorthin ("White Demon/Fire"?) - he alone amongst their terrible number was encased in pale flames. Drawn to Melkor's splendour before history he was entrusted with the infamous role of Master of the Guard beneath Thangorodrim. Rarely above ground, he spent almost all of his time in Melkor's hellish throne room at his master's side. His fate is unknown, though it is likely he perished during the destruction of Angband.