The Dark One
Auror
You've got to LOVE everything about your villains. They are so important to the story and the plot. In my first (and most successful so far) novel, there were a few different classes of villains. I just loved writing the vicious football hooligans and in all honesty, I probably derived a sort of id-state vicarious freedom from their antics.One of the (very) few things I like about the villain of one of my novels is that over the course of the story he does learn from (some of) his mistakes in handling the heroine and their upcoming marriage. When she tries to escape from him again and again with weeks to go before their planned wedding date, he basically says "screw this" and bumps it up to the very next day, and also shackles her to him for the time being so she can't escape again. She still manages to throw that completely out of whack, but still.
Bernard Cornwell wrote of how saddened he was when he finally killed off Sergeant Hakeswill (Sharpe's great nemesis). I can understand why. Hakeswill was a fantastic character - utterly dripping with pure evil - brilliantly drawn and brilliantly used.