What are Sans and Papyrus named after in "Undertale"?

Sans and Papyrus, two characters in the popular indie game Undertale, are named after fonts. Sans is named after the font called Comic Sans, which is known for its informal and whimsical style. On the other hand, Papyrus is named after the font called Papyrus, which resembles ancient Egyptian writing and has a more mystical appearance. The creator of Undertale, Toby Fox, decided to name these characters after fonts as a playful nod to typography and to enhance their personalities and visual design within the game.