Alright, this is a for fun question, but how many invincibility frames do you get when fighting Papyrus? It feels like so much more compared to other monsters (it’s like he doesn’t even want to hurt you).

uselessundertalefacts:

I hadn’t looked much into invincibility frames before this, but yeah, Papyrus does give you more invincibility frames!  The default number of frames you get is whatever your INV stat is, which is 20 at baseline and increases if you equip certain items.  With Papyrus’s bone attacks, you get three times as many invincibility frames as that.  What a nice skeleton.