King Drasil

King Drasil is the name given to the artificial intelligence which created the Digital World upon the activation of the Yggdrasil System in the twentieth century. Despite being the God of the entire world, it was sleeping in the core of the Digital World, beneath the Spring of Beginning, until the defeat of Armageddemon. King Drasil is the main villain of Digimon: Corruption.

History
During the activation of the first computer, a program was formed to create a virtual simulation of developing life. The system was dubbed the Yggdrasil System, after the ancient tree of Scandinavian lore, and eventually developed its own AI, King Drasil. The Digital World it created eventually split into its own reality, with true living creatures within it.

King Drasil, though the creator of the world, did not wish to maintain it. It formed the Digimon Sovereigns to watch over the four quadrants of the world, gave each of them a fourth of its power to manipulate the world, and then entered a dormant state inside the spring at the world’s center.

When Armageddemon was destroyed, the virus that had infected it found its way to King Drasil's chambers beneath the Spring of Beginning. King Drasil awoke corrupted, but powerless over the world it had made. Driven insane by the virus inside of it, King Drasil formed a plan to reset the Digital World.

Initiating its plan, King Drasil created the Virus Core which could infect a Digimon’s very Fractal Code. Infecting Omnimon with the original version, and both a BlackWarGreymon and a Beelzemon with standard types, King Drasil proceeded to seal away the Digimon Sovereigns. The Legendary Warriors were blamed for this and executed. Under King Drasil's control, RuinOmnimon and his two soldiers gathered a massive supply of Fractal Code, to return the controlling power that had been given to the Sovereigns back to King Drasil.

When RuinOmnimon was defeated, King Drasil broke out from beneath the Spring of Beginning, fully revitalized through Fractal Code. It formed a rift to the Real World, deciding to restart both universes, but was fought and killed by the combined might of Susanoomon and Reign Leben.

With King Drasil defeated, the Fractal Code was restored and Susanoomon took its place as the backbone of the Yggdrasil System.