The problem is, I need to design the villain now so that I can have him start moving against the PCs (in a behind-the-curtain, mastermind sort of way). So I'm looking for ideas. I'm considering the idea that he rules over an area of the map for some reason (kinda like the standard vampire lording over his cattle scenario). But I'm not sure I want to just go with a powerful vampire. I'm considered throwing the Soul Eater PrC on something, so having him live on the local populace. Any ideas for other variants?
I'm also considering using a Rakshasa, since I've never used one and think it could be fun. But I can't really find any information about these things and what they act like (like what their goals would be). So does anyone have any info/ideas they could share?
Or just any other scenarios I can use? Or just ideas for the adventures? Thanks a bunch.