tags/creators:
Fell(red): @underfell
swap(orange): @underswapped3
classic(yellow): tobyfox
handplates(green): @zarla-s
outer(blue): (i have no idea)
storyshift(purple): @voltrathesparking (i think)
Here's my take on Underswap Sans and Papyrus! They're swapped with each other as they are in most versions about Underswap.
Sans, rather than being a royal guard wannabe, is already in the royal guard, ranked beneath alphys and mettaton. He made a promise to toriel that he'd protect the people of the underground, but he still doesn't take his job too seriously. His puzzles are a lot more like elaborate pranks than actual puzzles. Papyrus works as a delivery boy for Gerson's tavern, very enthusiastic about his job, and his job lead him to meet undyne. He had a delivery for her, but when he got to her lab she had fallen asleep and didn't answer the door, and he just stood there all night just to give her her (now cold) food. Undyne herself used to work at Gerson's, helping him brew drinks, which is what sparked her interest in chemistry and science.
Also i don't really have anywhere else to clarify this but Gerson is swapped with Grillby
As always, special thanks to ChrisTheRaccTamer for his tweaks to the sprites, also thanks to shroompng for the beautiful background for gerson's tavern, and feel free to ask me if you have any questions about the au!
so i was going a bit insane over them, and also the concept of underswap in general but specially them because i had this very silly idea/concept in mind for the personality swap they would have.
WHICH I WILL SHARE ONCE I FLESH IT OUT MORE because ngl, these made me wanna work on my very own take for a swap au :D