Maidame Curie

Maidame Curie is a deity of an unknown origin. Recently arriving in the DxD world for some reason, she is rumored to have aided multiple universes and dimensions from the brink of destruction during her travels. Despite being of unknown origin, most immortals have acknowledged her unseen power.

Dressed as a maid (it is unknown if that is her current form or merely a host) she leads a group of capable fighters composed of many species, but run only by maids, simply called "The Guild".