At the risk of sounding like a broken record, the closest character I've come to hating is Bowser. I personally consider him to be the single, most overrated video game villain of all time. Not only are most of his plans repetitive and generally lacking in the originality department, but then the developers show all this blatant favoritism toward him, especially in some of the recent games. I do like him as an anti-hero, but as a villain, I don't think he's anything special, and as such, I'm not impressed with him in the least.