Ghidorah's Revenge

The Devonians arrive, controlling Cyber-Zilla (a cyborg made from Zilla's carcass) and Keizer Ghidorah, a super Kaiju with King Ghidorah's DNA.  They overwhelm the GDF, including the newly built mecha SMG-II.  Shinji learns that Lord Ghidorah wasn't completely dead; his soul is inside Keizer Ghidorah.  Keizer Ghidorah breaks free from his control and destroys the Devonians ruthlessly, but not before their leader sends a distress call.

As Cyber-Zilla rampages a village near Mt. Fuji, a new Kaiju (later called Vastatotherium) awakens and devours Cyber-Zilla violently.  Godzilla, Anguirus, Rodan, and King Caesar team up to destroy Keizer Ghidorah forever.  However, Vastatotherium is hunting for prey, and the Devonians' allies, the Cryog, are making their way towards Earth...

Kaiju:
-Godzilla
-Anguirus
-Rodan
-King Caesar
-Zilla
-Keizer Ghidorah
-SMG-II
-Cyber-Zilla
-Vastatotherium