I've created a character that has been lingering in my mind for about three weeks now but I can quite... Work him out. Said character is a priest and he's the son of the demon Asmodeus -- the demon of lust -- with a prostitute. I have a lot about his backstory, and in my novel he would lurk around the MC, a female doctor with indian descendence who will be involved in a series of... Very interesting crimes. But I'm not sure either the half-demon priest would be the "hidden all along" villain or the sidekick. If he was the sidekick, obviously I would need a reason why would he be on the good side, since he has superpowers coming from his "dad" and you can picture what powers would he have being son of Asmodeus... Anyhow, I haven't thought about the reason he would be good. And I also can't think of what would be his "goal" as a villain. Any ideas regarding this particular matter...? If it helps, it's placed in Rome, Italy, in the 80's.