While chasing his deceased daughter, Calliope, in the Underworld, Kratos, the gods' servant, was met by Persephone and demanded to see his daughter. Persephone explained to Kratos that if he were to see his daughter, who fled to the Elysium Fields, he would need to prove himself worthy by giving up his power and weapons. Only then would he be granted passage into the Elysium Fields as well.