In Persian mythology, Azhi Dahaka (also known as Dahak) was a dragon created by Ahriman to eat the universe. It had three heads: pain, anguish and death. Its wings were so vast and so dark that they hid the stars. Azhi Dahaka was finally subdued by Atar, who chained him to a mountain where he will remain until he breaks free at the end of human time, beginning the battle between good and evil which will destroy one third of all creation and will only end when Atar finally kills Azhi Dahaka and scatters his ashes into the gulf of oblivion. Research Azhi Dahaka