When Aion sent the Empyrean Lords to guard the Tower of Eternity from Balaur, he created a magical force known as the Aether that the Lords could tap into. Over time, humans began to connect with this magical power, and the grew abilities far beyond mortal men and women. Now armed with incredible strength, the ability of flight, and other mystical powers, these creatures were known as Daeva. As time, their numbers began to grow to the point where the Empyrean Lords began to use them as an army to fight the Balaur in what would become known as the Millenium War. The radiant light that surrounds Elysea has caused the Elyos to become more vibrant and beautiful, becoming almost angelic in their appearances. For this reason, the Elyos consider themselves the chosen of Aion, and believe that their mission to make peace with the Balaur was a divine one that they were right in making. For this reason, the Elyos have become slightly arrogant in their view of the world. However, despite this arrogance, they still have compassion for others, although the show no mercy towards the Asmodians.

Over the centuries of fighting, the Empyrean Lords and Balaur both began to tire of their losses, and the Empyrean Lords began to suggest a peace. The issue heavily divided the Lords, as half of them believed that they should continue to fight. Eventually, 7 of the Lords became convinced that peace was the correct path, and they extended an invitation to the Balaur over the objections of the remaining five Lords. Meeting at the Tower of Eternity, both sides seemed willing to engage in an actual peace treaty. However, during the meeting something went wrong and, for reasons unknown, one of the Balaur Dragon Lords was slain. Enraged, the Balaur attacked the Tower and shattered it, splitting the very anchor that held the world in two.