Papyrus skeletal grin seemed to grow wider as he set up his very own Youtube account. Now that monsters were on the surface he had the ability to make all kinds of friends on the inter webs. He had heard one way of becoming popular was to make videos of things and post them for the world to see. With the royal guard disbanded he had to resort to other means of popularity. Once his account was set up he posted a few videos of him making spaghetti, humans seemed to love videos of food. With that done he simply had to wait and see.
Papyrus cringed when he heard a loud crash come from the kitchen. "NYEH! WHAT ON EARTH IS GOING ON OUT THERE!" he exclaimed as he got up and went to see what all the hulabaloo was about. His eye socket twitched in irritation at the sight. The annoying dog had found some way into their home and was currently wreaking their kitchen. "SHOO! SHOO YOU MONGREL!" Papyrus exclaimed, chasing after the white annoyance. It took about half an hour to catch him and toss him outside. "There, now I can return to my Youtubes" he said with a sniff as he dusted his hands off and returned to his computer.
"Nyeh? oh my" he said, his sockets widening at the sight before him. There on his screen he had over thousands of messages and notifications. He eagerly opened them and began to read through them. His excitement quickly turned to confusion as he took in what the messages said. "what... is undertale?" he questioned as he scratched at his skull, perhaps the human frisk could tell him? He let out another confused Nyeh as he read more comments. Some were very disturbing or just confusing, calling him strange nick names. A good majority though asked him for reactions to things. One thing kept popping up called "Undertale genocide route". "Well... I do not wish to disappoint my newly acquired fan base, perhaps I shall make this reaction video that is being requested nyeh heh heh!".
He decided to take it a step further and set it up as a live stream. It didn't take long before he had thousands of people flooding the chat. "Hello humans. I, the great Papyrus, thank you all for the warm welcome to your online world. I have seen many request and thought we could all be here together as I participate in one of these reactions. Many have requested this Undertale genocide... I do not know what that is but it sounds very interesting and you all seem to really like it, let us get to it shall we?".