The ChronoCore is a digital lifeform which serves as the main antagonist in Digimon World Dawn and Dusk. It is a sentient virus which degrades and destroys all data in the Digital World. It improved itself with the Digi-Entelechia produced by Calumon, then set out to take down Yggdrasill and rewrite the Digital World, in order to make the Digital World itself perish.