Dester X1 (デスターX1 Desutā Ekkusu Wan?) is an advanced military machine tested by the Armament Army during a demonstration to potential buyers. Equipped with a variety of weapons and heat sensors, by coincidence it is used against Metalder. When the Armament army realizes Metalder was in the area looking for abandoned puppies, these puppies were then used as bait and placed in a minefield guarded by the robot. Metalder deceives the machine using a heated stone which gives him an opening to disable it. It is finally destroyed when Metalder throws Darbarbo onto it, the impact presumably causing his shoulder-mounted artillery to detonate.