Zazikel

Zazikel, or the "Dragon of Chaos", was one of the Old Gods. It was awakened in 1:5 Divine (1199 TE) by the darkspawn and rose as an archdemon to lead the Second Blight, destroying the city of Nordbotten in the Anderfels before the world reacted. Zazikel was finally slain at the Battle of Starkhaven in 1:95 Divine (1289 TE).