Yandere Nightmare Sans X Reader

Cross!Sans, New Undertale Fanon AU Wiki

Undertale AU Sans x Reader Oneshots - Fell x Singer! Reader

Undertale x Male Reader - FlowerFell! Sans x Male Reader

The Smiling Hero (My Hero Acidamiea x Male Sans Reader) - Cam Ward - Wattpad

Miss Me? (Underfell Sans x male reader), Undertale One Shots

Chapter 42, Forever Changes (AU Sans & Papyrus x Male! Reader) !DISCONTINUED!

Human Sans(female)

Due to popular demand, making actual refference sheets for these two ♥ This almost feels like a real AU now XD I was never friends with refs, so these / Undertale AU

Art and writing? -Undertale +au

male reader x female various - female underfell sans x male reader