Clermont

A terrible man who would stop at no means to further his "research".

Though very capable of adapting in large crowds and feigning normalcy, at the end of the night he finds himself a victim to ceaselessly torture and thoroughly... inspect. 

It is rather unknown how he disposes of the body, though one would suspect he perhaps eats them. This, however, can not be confirmed. Anyone who could come close to knowing his secrets would not see the light of day.

Oddly enough, Clermont does not show the same dreary treatment to pets, instead choosing to keep them out of his lab entirely.