PD Karl

P.D. Karl the Fourth is a demon. His favorite food is people's feelings of Morality. Cube is familiar with him and refers to him as a scoundrel.

If Olive's highest stat is morality, P.D. will come to your house and offer to give you 10G per point of morality in order to take them all. Giving into his offer will, logically, reduce Olive's morality to pretty much zero.