Aion: The Tower of Eternity (known also as The Tower of AION in Japan, is a massively multiplayer online role-playing game (MMORPG) released by NCsoft, a major Korean game developer. In the beginning, Aion benevolently watched over his world Atreia. He created the humans, and the Balaur to safeguard and watch over them.

Eventually, the Balaur became obsessed with power and subjugation. Five of the Balaur rose to a height of strength above the rest, and became known as the five Dragon Lords. When Aion refused to grant them the power they desired, the power to rival his own, they revolted and declared war on the god that created them.

Aion's hand was forced, and he created the twelve Empyrean Lords, beings of divinity and power to protect the Tower of Eternity.