God

" Noelle is just an entity that I possess.

So even if you kill me, you did not kill me, as I am immortal. I can possess other people, as right now I take the form of Mona until noelle's body is restored. Try to overthrow me, fucking fake clones, because you cannot overthrow a god. "

-God, in RC3

God is an entity that exists in all of [[ universes.

Summary
The proof of this entity's existence is proven almost all of the things that Harveycane creates. It lies in his videos, his "anarchy" server with its own lore, and is likely the narrator and the supreme god. In all of Harveycane's videos, he seems to control everything in this world, and is even shown in canceled [[Barney vs. the World movie in his own, unique form, distinct from all other entities. In RC3, its implied that the God is taking form of a random entity, most likely taking form of noelle.