Well you know, that brings up an interesting theory.
I cannot remember who it was, but the theory went like this.
Somewhere deep in all of Existence, is the Prime-Verse.
Not linked to the Metaverse mind you, but theoretically this Primeverse is the reason for the existence of the Metaverse. The theory is that every individual in the Primeverse are something along the lines of creators of the metaverse, every canon spontaneously coming into existence as an individual concieves it. Likewise, each individual is capable of making another version of a canon merely by knowing of the canon itself. These spin-off canons are thus manipulated by the new individual, completely oblivious to the original. Sometimes the various Prime denizens may think up a Crossover. Depending on their ability in merging the two together, some may remain stable, becoming new canons in themselves. Others are so unrealistic, that their very existence threatens to collapse itself and others around it.
This theory also extends to the creation of the SUEs. Some believe that these Prime denizens, these creators, sometimes personify themselves in the canons of their creation. The ones that blend into the canon, do so with such skill that no one even notices them. Others, perhaps less mature individuals, create organisms that completely defy the laws of existence, and can be seen as one's means of self gratification. Indeed, some reports of the SUEs acting out of character before termination lead some to believe they are merely avatars to another being...
Unfortunately while they may be the creators, this does not make them gods. However there are those that believe they are.