Quote Originally Posted by Beleriphon View Post
M&M does as well: Power Level X - This being can do as they please. That's it, they're NPC in the vein of Mxyzptlk. They are plot devices that talk at you.
I really like the PL X idea. It's a great way of dealing with NPCs that are basically just plot devices. It doesn't work well for player characters, though.