After the Calamity Box finally presented itself when the prophesized warriors arrived in Amphibia, who were destined to end the Core. Upon this discovery, the Core sought to reclaim the Box and undo the prophecy by having its conscience transported to Marcy's body through its helmet, creating a new identity, Darcy, the Core adopted an eerily polite and affable manner, Despite its newly inherited childishness, it also took on a condescending, cruel, and sinister identity.