Homeostasis

Homeostasis is a digital lifeform, and one of the host computers who rules over the Digital World on a Server of the Network.

Digimon Adventure
Homeostasis is left unnamed, and denies that it is the God of the Digital World.

It possesses Kari in order to communicate with the DigiDestined and end the quarrel between Tai and Matt. It explains that when attempted to take the DigiEggs, Digivices, Tags, and Crests created by the Agents, Gennai escaped with the DigiEggs and Digivices.

Digimon Advrnture tri.
It possesses Kari once again to talk Digimon about Human World, DigiWorld and Reboot.

Digimon Xros Wars (manga)
In the past, had gone berserk and attempted to destroy the Human World in an attempt to protect the Digital World. Homeostasis was created to replace it as the host computer and God of the Digital World, and was intended to prioritize maintaining harmony across the two worlds.

Much later, questioned Homeostasis about the world's justice, and eventually fell from grace entirely. Homeostasis scourged the rebellious angel's body and cast it out of the Kernel.

At some point, Homeostasis made a prophecy regarding the "red and black dragon" who would destroy the Digital World, based on its conclusions from carefully observing the Digital World. This prophecy was pursued by the, who originally thought the dragon was a member of the , but it was eventually revealed to be , created from and  through Bagramon's machinations.