Fractal Code

Fractal Code is the core data of the Digital World, forming anything and everything within it. Normally invisible, Fractal Code appears, or is "rendered," either when a Digimon is seriously injured or pieces of the Digital World are vanishing.

When the Fractal Code of a Digimon is rendered, one of two things usually happens: another Digimon absorbs it, making them closer to Digivolving, or it regresses to a Digi-Egg and flies off to Primary Village. If the Digimon was infected with a Virus Core, its Fractal Code must be "digitized" by the Digivice before it becomes an egg, otherwise the hatchling Digimon will still be infected.

When the Digimon Sovereigns were sealed in their temples, the Fractal Code of the Digital World began falling apart, and secretly gathering at the Spring of Beginning. RuinOmnimon intended to use all of this data as a power source for his All Delete ability, but King Drasil was actually absorbing it it to regain the control over the world that he had long ago given to the Sovereigns.

The Daemon Corps were after Fractal Code for their own reasons, originally to create Armageddemon. After Daemon was sealed in the Dark Ocean, what remained of the organization planned to use it along with the Code Crowns to free their master.