Well, I'd be Sheogorath. But that's already taken.
So I guess I'd be the Daedric Lord of Random Teleportation, and wreak havoc by (what else?) randomly teleporting everything everywhere. Like having a dread zombie appear in your soup, or the atronach that you're currently fighting be replaced with an human infant.
AND I HATE MUDKIPZ. In fact, I kick baby mudkipz in the face.