Undertale AUs -- Fiction (fanfiction inspired)

Undertale X Reader~7 MiH-Error~ by IllusionsMaster64 on DeviantArt

AU Madness! (Male! Depressed! Reader x Fem! Sans AU Harem) : r/UndertaleAU

Let's go Gamers — Spooky doodle for spooky season babeyyyyyy Feat.

Sans x reader lemons (most of the sans x reader) - gastersansissanspai - Wattpad

Undertale au x reader one shots and lemons – Artofit

Au Sans - Australia

sans au murder mystery filter｜TikTok Search

Altertale!Toriel on X: @AltertaleSans @xDeterminedKid / X

I want Her (Underswap!Sans x Shy!Reader) - A/N: *inserts awesome title*

Lust Sans - Ireland