The Belial Galactic Empire is the main antagonistic faction in Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire. It is a powerful invasion force led by Kaiser Belial seeking to conquer the Land of Light and the galaxy.
With an army of Darklops and fleet of Delusts, Belial began his campaign of galactic conquest. After conquering Planet Emerald, Belial sent his Darklops and Legionoid to invade various planets, including the Land of Light. This prompted Ultraman Zero to investigate the cause, eventually discovering Belial and his army.
Zero then assembled an army to fight the Empire. After Belial was killed by Zero with the Ultimate Aegis, the Empire was brought to an end.