How to Make a Villain.
Okay, keep in mind that everyone has their own way of going through characters, and villains especially are very much your own thing. You're going to have your favorite class, most likely, and you're often going to stick to it. (And sorry folks, this is an ACTUAL tutorial - there are enough joke ones out there already, funny as they may be.)
One thing to generally keep in mind, however, is the tragic past - avoid it. Seriously, people, nobody likes it when the villain gets whiny. Which isn't to say that they can't have a tragic past, but it's very easy to send it into whininess, or cliché. A bad boy villain character who keeps it all locked up inside really isn't any better. There are several options, though, I'll be listing only the ones I'm familiar with around here.
Classic villain - These have a lot of subclasses, and can range from stupid to serious, but they're basically the type you'll see in old movies. The evil scientists, or power