Flip this sprite

[Kitsu]

You don't have to do it with Metaknight, as he sprite flips in Kirby games. I also don't think you'd have to do it with Pit either; his stance is pretty open to flipping (he can have the hand switch animation for turning). ZSS would need to have it though. As for Bowser Jr., if the Paintbrush is out all the time, it depends on his stance; if his stance is weird, like Fox's or something, then you'd either have to sprite both ways, or have a switch hands animation. Same thing with Masked Man and Krystal.
I left out Roy on purpose, but he'd also be the same as Ike and Marth (no sprite-flipping). As for people who have weapons similar to Fox's blaster, you'd only have to resprite those poses.