Classic: hmm...if there are alternate timelines, that means there could be alternate universes.... *big thonk*
Literally any AU sans: *exists*
Classic: HOLY SHIT ITS ME! BUT DIFFERENT GFVTCRDFDGTRDVCFTDS

YOU ARE READING
Undertale AUs on crack
FanfictionWhat happens when you let me and friends collaborate on a google doc.
AUs lol
Classic: hmm...if there are alternate timelines, that means there could be alternate universes.... *big thonk*
Literally any AU sans: *exists*
Classic: HOLY SHIT ITS ME! BUT DIFFERENT GFVTCRDFDGTRDVCFTDS