I know that something about bad guys has to be likable. I would imagine I could even find something about Dick Cheney that is likable if I actually met him -- although I don't want to meet him: I prefer to judge him by his actions. I'm afraid of being charmed. But writing bad guys is tough for me. I have them prejudged. I know they're scumbags before I start out, and this sometimes gives me trouble. I'm thinking of characters written by great writers that fail in this regard: Don John in Much Ado About Nothing: he's the most uninteresting character Shakespeare every wrote.
At present I'm trying to write a guy who obviously has charm and can deceive people, but I'm struggling. I simply don't like him.
Anybody have this kind of trouble?