She

"She" is the only designation to an entity that has been referenced twice. Absolutely nothing beyond the gender of this entity is known.

It was mentioned once by The Essence, and again in the Subjugation Cube Recording by Colette, both times mentioned that the events that are happening are because she feels bad for the universe and refuses to be convinced otherwise.

At current, the power this entity employs isn't known, but it is strong enough to somehow reverse everything that has happened with little effort, and wipe the minds of everyone involved, even someone as powerful as Chi Kobayashi.