My choice is Squall from Final Fantasy VIII. I've always thought he was unreasonably douchey and now that I'm playing through FF8 again, my opinion hasn't changed. Squall is an immensely dislikable person and there are a few points in the game where his petulant attitude is almost unbearable. He is ridiculously immature with little to no redeaming qualities and it honestly puzzles me that some people actually like such a rude, unpleasant, and inconsiderate douchebag. It doesn't really matter to me that he gets better later on. He's such a douche initially that my view of his character is forever tainted. He's like that guy that poisions the atmosphere every time he steps into a social situation. It's enough to make you wish that Laguna was the main character. Unlike Squall, Laguna is a cool, friendly, and endearing dude. Sorry if I'm offending any angsty teenagers on this forum, but being brooding and moody is not even slightly cool.
I've even seen some people indentify with the douchebag that is Squall and I always find myself thinking that I'd seriously cosider changing my personality if I in any way indentified with the guy.
Really, it almost kind of depresses me that some people can express admiration for such a borish jerk and then bash a genuinely decent and friendly guy like Tidus in the same breath.
Anyway, that's enough ranting. What legacy character have you always found to be a total douche?