Imperializer is a powerful robotic alien weapon from Ultraman Mebius, created and deployed by the alien Empera’s forces. It serves as a recurring major enemy and a symbol of the invading empire’s overwhelming military might. Built for destruction and combat, Imperializer is sent to eliminate Ultraman Mebius and the defense team GUYS. Its role in the series is that of a relentless, high-threat antagonist whose appearance escalates the conflict and demonstrates the scale of the Empera invasion.