Johnny Sokko and His Flying Robot: 22 - Clash of the Giant Robots

The country of Melcon wants their own giant robot and the anniversary of Giant Robo's creation is spoiled by the news. The Melconians build Calamity, but Mr. Gold (called Goldenaut in the American version) steals it. Gargoyle scientists cannot activate Calamity, but the robot's defense reaction disables Giant Robo by using its own attacks against it.