So, here's the thing. I'm just starting to get into the crux of my short story, and I'm fairly certain that once it's done I'm going to take my main character and start a novel (maybe even a series).
But what the main character is capable of, leaves me without an idea for a villain.
My character has the ability to control demons (particularly the 72 goetic demons of the lesser keys of solomon). He can do this with no strings attached, no moral ramifications and no temptations or his soul going to hell for doing so. He has been gifted/earned the rings of Solomon, and his seat of power is The Solomon, not just because of his adept power, but his mental prowess in understanding things.
But, he's already dealing with dark entities (I'm not looking to turn this into a heaven versus hell situation, I have a completely different series I have planned for that), so what could make a good villain for someone who already deals with (and bitchslaps) evil creatures everyday? Any thoughts would be great.