Heh, Meta Knight's a pain for everyone, I bet.
Except people who also main Meta Knight, I guess.
Well, after you write down Meta Knight, I recommend you do Snake as well.
He's got a lot of very strong anti-Luigi moves. For example, all of his tilts.
Not to mention that some people can make him slide half across Final Destination with his Up-Smash, somehow.
3rd Edit: Also Ranil, when you push A whilst you're grabbing someone, the move you then perform is classified as a Pummel. Just to let you know.