Dublio
Smash Ace
Counterpicking is pointless because everyone knows how to play MK now. Back in the day, you got to change the stage or the character, but nowadays, you get to change both. Unless the person you're fighting sucks at Metaknight, any benefits you get from changing the stage are moot. This is probably why 95% of all competitive smashers don't counterpick at all and instead just go to neutral stages. Because even if they chose a counterpick, the opponent would just switch his character anyway. Unless you knew your opponent well enough to know that they would stay the same character of course.