Papyrus is a real mad and powerful skeleton that will kill someone to prove that he is the powerful. He still wants to be in the royal guard, but because he was rejected for being an idiot, he became mad and abusive toward his brother Sans. He thinks of all the royal guard members as useless, as he's stronger than them, and have beaten them all except the captain. As for Sans, he treats him like crap and took out Sans' eye for either slacking off or making a pun. Anyone who has tried to fight him lost in a bloody death.
Papyrus' left skull was cracked, His Scarf, instead of red, its blue instead. His Battle body was gray, their shoulders are sharp. His gloves and boots are blue too.