there's a duo of squeleton : one called UT!Papyrus and an other one called Underfell Papyrus. while Undertale papyrus is a naive squeleton that try as hard as he can to be cool and popular,Underfell Papyrus,Him,try to be popular but he don't know how to do so he try to learn from Undertale!Papyrus,rven if Undertale Papyrus' non-violence make non-sense into Underfell Papyrus,who is naturally violent.