First of the Urulóki
Glaurung
The first of the dragons and the greatest of the fire-drakes, bred by Morgoth in Angband. He led the flames of the Dagor Bragollach, broke the allied host at the Nirnaeth Arnoediad, sacked Nargothrond, and with lies and the dragon-spell drove Túrin and Nienor to their ruin before Túrin killed him at Cabed-en-Aras.