The United Nations Godzilla Countermeasures Center (also known as "G-Force") salvaged the remains of Mecha-King Ghidorah, a cyborg constructed in the 23rd century, in order to study the technology to create a super weapon to fight Godzilla. Their first weapon, a flying ship called Garuda, was considered a failure, but their second weapon, Mechagodzilla, was a great success. Mechagodzilla was created in order to kill Godzilla for good. In Godzilla and Mechagodzilla's first confrontation, Mechagodzilla knocked Godzilla on the ground, and shocked him using the shock anchor and cables. Godzilla, though, backfired at Mechagodzilla through the cables, and severely damaged it. G-Force then created a new weapon for Mechagodzilla, called the "Godzilla Crusher." The G-Crusher was a weapon that would destroy Godzilla's second brain, located on his spine. Later on, Mechagodzilla met up with Fire Rodan, and nearly killed him. Godzilla then showed up, and almost defeated Mechagodzilla. Mechagodzilla and the Garuda were joined together to form Super Mechagodzilla. Super Mechagodzilla used the G-Crusher on Godzilla, and successfully killed him. Fire Rodan, who was almost dead, flew over to Godzilla and sacraficed his radiation to save him. Godzilla then came back to life, even more powerful and angry, and easily destroyed Mechagodzilla. Mechagodzilla was the closest weapon to kill of Godzilla for good.