For Team Switched's rendition, see Sans/Team Switched.
— Sans' catchprase

Sans is the brother of Papyrus. He is training to become a royal guard with Alphys.



Sans is excitable, loving, and enjoys making tacos for his friends.[1]

Sans likes tacos (and burritos?) instead of spaghetti (italian food being swapped with mexican)[2] and likes to say "MWEH HEH HEH", but he still enjoys making puns,[3] he also likes riddles instead of puzzles.[2]


  • Song that might play when you fight Sans was Popcornpr1nce's original choice for him, because it’s so cute and upbeat. But he finds remixes of MEGALOVANIA pretty sweet too.[4]


  1. character personalities Official Tumblr.
  2. 2.0 2.1 hello yes i would like to write some underswap fanfic, can you give us anymore headcanons? like who else has swapped and whatnot? and does sans still like puns or is that Papyrus' thing? does pap still make spaghetti? Popcornpr1nce's Tumblr.
  3. OK SO, I thought what if theres an AU in which the... Popcornpr1nce's Tumblr.
  4. Wait... so would that alt. version of "Megalovania" play when you fought Sans, or would "Song That Might Play When You Fight Sans" play? Popcornprince's Tumblr.