The_Best_Dark_Lord
Papyrus wasn't stupid. He knew that Undyne was lying to him about letting him into the Royal Guard, he knew about everything Sans was trying to hide from him, he knew about Resets, he knew it all. He remembered things as well, things that would drive people mad if they could remember like he did, like the human killing him and only him to get a reaction from Sans. He was also tired. So incredibly tired. He was tired of being an accessory to his brother, tired of being talked about behind everyone's backs, tired of people taking advantage of his kindness and "obliviousness" yet never even bothering to remember his name. Papyrus wasn't innocent, oblivious, or an idiot, and he was going to prove it. The thought of getting revenge on those who have wronged him filled him with 𝘿𝙀𝙏𝙀𝙍𝙈𝙄𝙉𝘼𝙏𝙄𝙊𝙉.