|Monster Name||First Movie Appearence||First Video Game Appearence|
|Jet Jaguar||Godzilla VS Megalon||Battle Soccer|
|Kiryu||Godzilla Against Mechagodzilla||Godzilla: Destroy All Monsters Melee (Xbox Version)|
|Mechagodzilla 2||Godzilla VS Mechagodzilla II||Super Godzilla (Japanese Version)|
|Mecha-King Ghidorah||Godzilla VS King Ghidorah||Super Godzilla|
|Moguera||The Mysterians||Godzilla: Monster Of Monsters|
When the asteroids starting impacting and the crystals starting growing around Earth in Godzilla: Unleashed,Base Commander Tagaki sent out the GDF units to defend Earth from possible monster attack.When the GDF units enter Sydney and Seattle,they awaken Titanosaurus and Obsidius.When Anguirus or Baragon defeated King Ghidorah during the Invasion on San Francisco,they reconstructed him with their technology,transforming him into Mecha-King Ghidorah.