The UnWorld's Moon is entirely owned by the Koopa Empire and is one of the territories. It viceroy is Ludwig von Koopa, one of Bowser's sons. The Territory was started when Bowser conquered the moon from the previous owners (who had nothing built there), the United States of UnAmerica. He then sent 50 million colonists to colonize the moon.
The Moon is the site of many of the Koopa Troop's supply of F.E.U.M.P.E.s. There are also many FEUMPE silos located here. There are 500 silos that can fire FEUMPEs at any location in the UnWorld. The Moon was the launching place of many FEUMPEs that destroyed cities including the Rome Settlement.