Like its Showa counterpart, this version of Mechagodzilla was constructed specifically to destroy Godzilla; however, this time it was built by the human military organization G-Force in order to defend Japan from the monster. Constructed using technology salvaged from Mecha-King Ghidorah's wreckage, Mechagodzilla was launched into battle against Godzilla when he came ashore in Japan searching for BabyGodzilla. Mechagodzilla failed to halt Godzilla and was badly damaged in the battle, leading G-Force to begin numerous repairs and modifications on the mech. Mechagodzilla was outfitted with a specialized anti-Godzilla system dubbed the G-Crusher, and was given the ability to attach to G-Force's aircraft named the Garuda. The repaired Mechagodzilla was deployed to battle Fire Rodan, who stole a container holding BabyGodzilla and his surrogate mother. Mechagodzilla defeated Rodan, and began a second battle with Godzilla once he came ashore as well. Mechagodzilla nearly killed Godzilla, but Rodan sacrificed himself to revive Godzilla, giving him the power needed to destroy Mechagodzilla.