Okay, so I don't know if you actually read these things.
Did you know that some demons have been said to actually teach certain subjects? The Ars Goetia lists Asmodeus (the ancient one, not the DND one), the god of lust and a prince of hell, as having taught the subjects geometry, astronomy, and arithmetic.
Make some connection. Hurr demons are cool.
Also: I love Inctorius. Taking into account the semi-vaguenes of art, HE LOOKS JUST LIKE MY HUSBAND! Except the horns.