So, an AU of Undertale called Underswap started floating around a couple months ago, and I absolutely adore it, it's my fave AU for Undertale. However, the one thing that bothered me was Sans and Pap's clothes, so I decided to redesign them.
I also have my own version of Underswap that I might share sometime in the future, but who knows.

Quick headcanons: Sans’ bandana is a baby blanket that he constantly held onto as a child and refused to get rid of as he got older.
Sans is still crazy into science and wants to capture a human to study them and discover something big about them so he can join the royal scientist group.

Papyrus has been thinking about joining Alphys as a fellow guard, but due to possible depression and low energy/motivation, he never gets around to it.

Undertale is © TobyFox. The Underswap AU was created by (I think) popcornprince and coastrobbo on tumblr. Redesigns were done by me. Art was done by me. Do not use or repost anywhere.