Eons ago, at the beginning of the universe, the natives of the planet Oa were among the first beings to come into existence; a race of immortal, immensely powerful aliens who seek to maintain order and balance for all species. The Emotional Spectrum, a series of bioelectric way-lines criss-crossing the universe, was a source of great disorder and the Oans harnessed its power to create the Force Batteries. The entities of the Emotional Spectrum, the energies made sentient, were trapped within as the Batteries were scattered to the farthest reaches of the universe, except for the Green Battery of Willpower, whom the Oaxanians used to create the Power Rings, the weapons of their peace-keepers, the Green Lantern Corps.
Now known as the Guardians, the remaining Oans recruited the living planet Mogo to distribute their Power Rings across the 3600 sectors of space to living beings with strong-enough connections to the green of the Emotional Spectrum, so they can be recruited into the Green Lantern Corps.
