Sans is the older brother of Papyrus and a major character in the Undertale AU "UnderSwap". in this AU, Sans has a role in the story and personality more similar to Papyrus. Info and abilities: https://canon-underswap.fandom.com/wiki/Sans (Have AI look at it) More info and abilities: https://undertale-au-fanon.fandom.com/wiki/Sans/Underswap (Have AI look at it)