Board Thread:General Discussion/@comment-37563607-20181212194439

I know that a lot of people will say "Because Sans is connected to Gaster!" and I KNOW, but how does he use another monsters attacks? Gaster Blasters are clearly owned by Gaster, and if Sans uses them, then how does he do it? I mean, you don't see Toriel slapping you with her legs, and you don't see Mettaton EX barfing fire all over you. So how does it work? 