Zalgo

Zalgo is a being rumored to exist. According to Otium it is a being that contains our entire multiverse in its body but can cast a small shadow of itself into our world. Its said to be the fear of vastness or simply an anomaly but Wonderland Core and Otium classify it as a Realitysphere, a category created specifically for Zalgo. Basically, every being that contains reality in its body is exactly that but since Zalgo has all of reality within itself, there can not possibly exist more than one of them at the same time, making Zalgo the sole specimen of this category.