Aion created the world of Atrea, a world with two hemispheres connected at the center by the Tower of Eternity. Aion then created humanity and other sapient species as subjects for the Balaur to rule over. But ultimately the nigh-demonic Balaur lusted after power, becoming Dragon Lords and violating the restrictions placed upon them by Aion. When humanity was the only species to resist the Balaur, Aion rewarded certain humans with ascension, transforming them into Daevas – immortal winged beings capable of battling the Balaur. Daeva's can not die, although they can be forced to collect their essence at certain obelisks when grievously harmed.