Not sure who either are or what their from but...I'm going to say the goat in a business suit with an energy sword because...he's a goat in a business suit with an energy sword.
@eddz99: Theory goat was immune to a universe destroying sword. He was immune to the massive reality warping magic of several witches. The witch who created thousands of universes just by fighting with another witch stated that if she were caught she would be killed by this goat.
So a massive multiversal conceptual being just stated that at theory goat is a massive threat to her, please explain how the theory goat is stomped?