Mammon Malphas

Mammon Malphas is a former mercenary-for-hire under Child Room and one of the 13 Master Rank Mercenaries. Nicknamed as the Crow, Mammon is infamous for her capability to cope and morph into anyone she sees in perfection, even voice mimicry. Aside from that, Mammon is also Morito Hayama's former fellow mercenary in an unknown past and his prominent ally. She later defected from the Child Room and transferred into Mikado High School as Sorte's escort along side with Myrta Hamelin.