Gretel was a girl kidnapped and raised by Eve and Adam Moonlit, and the twin sister of Hänsel. Born as part of Project 'Ma', the newborn twins were taken by their mother, Meta Salmhofer, to Held's Forest and raised by the Moonlit Family after Eve killed Meta. After being abandoned in the forest during a famine, Hänsel and Gretel murdered their foster parents and split Eve's Original Sin into the vessels of sin.