Dragon Age: Ascension
Old Gods are beings that were worshiped by a significant number of Thedosians, specifically the mages of the Tevinter Imperium, thousands of years ago. The mages worshiped them in the form of dragons. Legend holds that it was the Old Gods who initially taught mages how to use magic. It is widely believed (if not generally accepted as self-evident) throughout Thedas that the archdemons are the sleeping Old Gods, tainted and corrupted by the darkspawn.
In the days of the Tevinter Imperium, the Old Gods were a pantheon of deities widely revered by most citizens, with temples and priesthoods dedicated to their veneration, such as the acolytes of Dumat, who swore oaths of silence in homage to their lord. The first magister, Archon Thalsian, accredited his discovery of blood magic to the Old God Dumat, and his power led to the foundation of the Tevinter Imperium. Dragon imagery and iconography was equated with Imperial power all throughout the Imperium.
The Magisters worshipped seven Old Gods. The first—and the leader of the others—was called Dumat, the Dragon of Silence. According to scholars, Dumat was the first Old God to transform into an archdemon and consequently slain during the First Blight.
-Dumat, the Dragon of Silence and the archdemon of the First Blight
-Zazikel, the Dragon of Chaos and the archdemon of the Second Blight
-Toth, the Dragon of Fire and the archdemon of the Third Blight
-Andoral, the Dragon of Slaves and the archdemon of the Fourth Blight
-Urthemiel, the Dragon of Beauty
-Razikale, the Dragon of Mystery
-Lusacan, the Dragon of Night