|Glaurung and Túrin; John Howe|
One of the first and overall greatest of the Urulóki (fire dragons), Glaurung (also called Glaurug the golden, father of dragons, the Great Worm, and the Worm of Morgoth) had been bred in Angband by Morgoth. For all his greatness, Glaurung did not possess the power of flight.
In FA 260, he was sent from Angband to attack Ard-galen, but because he was not fully grown, Fingolfin’s archers were able to drive him off.
His next attack was during the Dagor Bragollach, at which point he was fully grown. In the Nirnaeth Arnoediad, he separated the eastern and western armies of the Noldor, destroying the former. He was only stopped by the Dwarves of Belegost, whose leader, Azaghâl, had been slain by Glaurung, wounding the dragon in the process and forcing him to retreat.
In FA 496, Glaurung led the campaign against Nargothrond. In addition to wreaking havoc on the city, he bewitched Túrin and Nienor, which ultimately led to their incestuous marriage and consequent suicides. Túrin was avenged, however; upon Cabed-en-Aras, he slew Glaurung with the Black Sword Gurthang (Anglachel).