Electromagnetic Emotional Spectrum

The Emotional Electromagnetic Spectrum is a group of ideologues that derive power from the emotions of all sentient beings. There are seven unique forms of energy based on their emotions, with a color unique to the emotion.

The Guardians and their successor races eventually chose to harness the emotions of several different colors. They also discovered that the farther one is away from the center of the Spectrum, the more control the energy has on the wielder.

Additionally, they discovered that each of these fields of energy had a sentient embodiment-- a primal entity of the universe itself-- which could induce the correlating emotion.

Oa developed the technology to build the first Central Power Battery. Oans as a race could naturally channel the Green spectrum, but the creation of the Power Battery allowed them to transmit that power over vast distances to conduits of energy in their servitor robots, the Manhunters-- then, later, the Green Lanterns.