Homeostasis

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

Design
Homeostasis has not been seen with a physical form. It inhabits the bodies of others to communicate, such as with Kari Kamiya and Maki Himekawa. While Kari resists Homeostasis internally, Homeostasis takes on Kari's form.

Etymologies
Official romanization given by the Digimon Reference Book and used in the franchise.
 * Homeostasis (ホメオスタシス)
 * En: Derived from the Greek words for 'same' and 'steady', referring to the processes that living beings actively use to maintain stable conditions necessary for survival.

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

It possesses Kari Kamiya in order to communicate with the and end the quarrel between Taichi "Tai" Kamiya and Yamato "Matt" Ishida. It explains that when attempted to take the s, s, Tags and Crests created by the Agents, Gennai escaped with the Digi-Eggs and Digivices.

Digimon Adventure tri.
When the original DigiDestined are losing to the, Homeostasis possesses Maki Himekawa and tells them they are the last hope. It then proceeds to use Maki's to make their partner Digimon digivolve into the.

Years later, in 2005, Homeostasis possesses Kari again to speak with the Digimon about the Human World, the, and the Reboot.

During the battle to stop both and, Homeostasis possessed Kari once more and demanded the Digidestined to not interfere during the battle or they will be destroyed as she was the one that sent Jesmon to destroy Raguelmon in the first place. She then explains her actions are justified to maintain harmony and balance no matter the sacrificial costs. Hearing this, Kari starts to fight for control of her body from within, telling off Homeostasis and their actions as overall selfish. Unable to maintain possession of Kari's body, Homeostasis departs telling the DigiDestined to lay aside their views of friendship which conflicts with the bigger agenda.

After is killed by, Homeostasis shuts down.

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.

Digimon World Re:Digitize Decode
Homeostasis possesses Kari Kamiya to talk to Taiga. It uses Taiga's battle with Kari to see if Taiga has the light to save the World, deciding he does after Taiga defeats her.