Villain design material?

[Varyon]

If you're looking to design a memorable villain, rather than just looking for mechanics, I'm personally fond of this short article (it's targeted toward players of That Other Game, hence the mentions of classes, levels, and challenge ratings, but the actual design process works just as well for any system, or indeed just for writing a story). As for the mechanical side, you need to decide if you're one of those GM's who gives his monsters and NPC's point values, or not. If not, you needn't restrict yourself to GURPS traits for building the character - rather, you need to define what the character can and cannot do. The Fire King example in the linked article doesn't need to be built with a huge level of fire-only DR to make certain he's immune to any flames the characters throw at him, he can just be immune to fire damage. Make certain the mechanics still work within GURPS, of course, but you can allow for what would be complicated builds as GURPS Advantages rather simply by just defining "this is how it works."