Talk:Muffet/@comment-24834487-20160125021706/@comment-27635996-20160126012145

I personally think that Mettaton can change shape at any time and that he'd been using it as a sort of alter ego. It seems like he was the friend who fed himself grapes on Undyne's piano, y'know? I don't think Alphys really knows anyone else who fits that description. And when the protagonist flips his switch, he says it's the "premiere of his new body," not necessarily his first time trying it out.