Planet Meranie (プラネットメラニー, Puranettomeranī?) is a planet seen in Neo Ultraman Neos. Planet Meranie is the homeworld of the now deceased Alien Meranie and their biological weapon Monsarger.
Alien Meranie first created Monsarger, a biological weapon and kept in a blue capsule. These aliens kept their weapon of mass destruction on a comet by the name of Meranie. The aliens then used a few artificial engines to create the illusion of lush forests and pure air to lure other aliens in and eliminate them with Monsarger, thus creating an intergalactic war before being deceased.