Bathory

At first glance, she appears to be the sweet student council president of Saint Michael's School for Girls, but she's actually an elite demon from a distinguished family in the Infernal Realm who was educated to be a leader. She joined the Archfiend Contest to fulfill an obligation to her family, but she's more interested in finding partners than being the Archfiend. She creates Childs through an ancient blood pact that binds the hearts of demons and humans.