The sinner who developed the engine of Mephistopheles, the bus operated by Limbus Company. She claims that there is no one in the City who could rival her library of knowledge and wisdom, and she isn't necessarily wrong. You might find her high and mighty attitude when she allows you to converse with her displeasing, but as seen with how she treats everyone with subtle gestures of arrogance, there is no hope of her parting with it, ever. We recommend simply nodding once and getting over it. 