Papyrus is a major character from Undertale, the role playing game released in 2015 by Toby Fox, known for his loud confidence and theatrical speech. Fans have long made edits imagining game characters crossing into real life, and this sound became a shorthand for that joke in meme videos and soundboards. Its continued use comes from instant recognition among Undertale players and the simple, flexible premise, which works for cosplay reveals, prop appearances, and unexpected character entrances.