mewtwo is a strange character to use
Indeed he is, he's so incredibly light that it was off putting at first, but then I started to see just how ridiculous some of his attacks are. Fair is godlike, Disable is a neat gimmick move (getting it to hit is pretty much a guaranteed smash) his Confusion (side b) is incredibly useful, lets you reflect projectiles and is a solid attack for walling an approach in general. Dair is fantastic, Usmash is great too, also Side B can be used at the peak of a jump to get extra height (Because he needed better recovery right?)
He is a light weight and floaty glass cannon essentially.