Your nightmare characters?

My nightmare character would have to be Steve, he has the ability to pretty much dodge anything you throw at him and recover swingin'....Also he is one of the only characters that a button-mashing noob and a master player can do very well with...I like using Steve on occasion, but when I have to fight against him, there aren't many strategies that consistently work efficiently. Throwing him frequently works with some people, but if they are well trained at throw escapes, there isn't much you can do to him except throw many distance attacks at him and hope for the best.