Gulus Gammamon

Gulus Gammamon is a character in the Digimon franchise, first appearing in Digimon Ghost Game. It is the evil Adult form of Gammamon, the partner Digimon of Hiro Amanokawa, and is considered one of the main antagonists of the series. Gulus Gammamon has a personality completely different from Gammamon, being ruthless, aggressive, and believing in the philosophy of "eat or be eaten". Its appearance is usually triggered by Gammamon losing control of his emotions or being strongly stimulated. Gulus Gammamon is incredibly powerful, even capable of battling Ultimate-level Digimon. Its existence is related to the mass chaos in the Digital World and is considered the mastermind behind the exodus of many Digimon into the Human World. However, Gulus Gammamon is eventually moved by Gammamon's good nature and realizes they are two sides of the same being, ultimately merging with Gammamon and releasing the corruption factor he spread across the Digital World, restoring it to normal.