In Hong Kong, Apex uses the Hollow Earth data to power their secret project: , a robotic Titan controlled via a neural link from a severed head of King Ghidorah.
Kong eventually enters the Hollow Earth through an entrance in Antarctica. He discovers an ancient throne room and finds a powerful battle axe made from the dorsal plates of another Godzilla. The Hong Kong Showdown
Godzilla arrives in Hong Kong to destroy the mecha but finds Kong there instead. The two engage in a brutal night battle amidst the neon skyscrapers. Kong uses his axe to land a heavy blow, but Godzilla ultimately defeats him, leaving Kong severely weakened and near death. The Ultimate Alliance
The power from Hollow Earth causes Ghidorah’s consciousness to take over Mechagodzilla, which kills its creators and begins a rampage. Godzilla tries to fight it but is overwhelmed by the robot's superior speed and weaponry.
Godzilla charges Kong’s axe with his atomic breath, allowing Kong to dismember and destroy Mechagodzilla. The Outcome