Pluto is the ninth planet in the Sol System. It is inhabited by Plutonian Wigglers. Debates have raged in some circles as to whether it's large enough to be considered a planet, but most people insist that it is because that's what they were taught and that's what they want it to be so science will just have to get over itself.
Pluto was devastated when jealous actress Michella Saganoid blew up the Solar System Good Show Awards building, wiping out most of the population and forcing the rest to evacuate. It was inhabitable again three centuries later.