As much au's as i can think of rn: Undertale Underswap Underfell UnderPlayer Sanstale Frisktale Dream!sans Alphatale Core!sans Swap!fell! sans Fell!Swap! sans Nightmaretale (Nightmare's au but i dont rlly know the name) Omnipotent! Sans Swap!Swap! Sans Dust!sans Dust!fell Disbelief Mistbelief Dustbelief Distrust Dusttrust Fell!swap!Distrust Swap!fell! Distrust Swap!fell!dust! sans fell!swap!dust! sans genocide/ aftertale! sans Ts! (Teamswitched) Underswap! papyrus TT (TimeTwist) Frisk TT Monster Kid TT! Sans Sudden Changes! Sans Dust!Omnipotent!Sans I am too lazy to think of more AU'S.