In the TS!Underswap AU, Sans is a laid-back, but confident Skeleton Monster who acts as a superhero under the name “Crossbones” and calls himself “The Savior of Starlight Isles”, which is where he lives in the Underground. Starlight Isles is his home.
He is business partners with Asriel Dreemurr, who draws comics of Crossbones having adventures and doing heroic things. He is the older brother of Papyrus.
