April Fools idea (Patreon)

So when I was working on a simple animation of my genie girl all that news about Sans being in smash was going around. It got me thinking about if I could do an april fools prank of like "Undertale HD" or some thing.

I dont know if im able to get the right look yet, i did this quick animation today as a test. I tried to match the idle animation that Sans has in battle but with a little extra added to it.

Also I dont know much about the Undertale fandom, so I dont know if some idea would really piss them off, What do you all think?