This planet existed in another universe where Zero fought Ultraman Belial in Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire.
The planet was the home world and seat of power of the Esmeraldan people. The planet came under attack and the Esmeraldan Royal Guard rallied its fleets to fight the invading forces of the Belial Galactic Empire but were presumably defeated when the Empire managed to land scores of Legionoids to attack the Capital City. There Mirror Knight was summoned when the princess Emerana was threatened allowing her to be rescued by Jean-Bird. After the two escaped and the Capital was captured when Mirror Knight tried to hold off one of the Malebrandes' claws and was corrupted by Belial. tith the planet fallen Belial and his Empire began their occupation.
Though the Royal Guards were defeated during the defense of their home they managed to retreat, saving a large portion of their fleet including the Flagship.
The planet remained under occupation though out the movie until the final battle where the surviving ships of the Royal Guard, joined forces with the Pirates of Flame and the Planet of Mirror's ships to reclaim the planet.