Sans AU v2 by AYGoftenover on DeviantArt

Undertale AU by MiniS42 on DeviantArt

sans. AU by Palomiuxez on DeviantArt

Sans - Undertale Fan art

Undertale AU: Rewind!Sans - Color Test by WishingStarInAJar -- Fur Affinity [dot] net

megalosomnia — Finally made a Sans AU, his name is Baggs.

Undertale AU Fresh! Sans Cosplay Costume Uniform Game Colorful Clothing Frisk Hat Pocket Halloween Party Carnival

Undertale AU: Dieutale Papyrus by QQQQT2 -- Fur Affinity [dot] net

Undertale - Sans, a card pack by Erkfir - INPRNT

Undertale au sans fell outerdust

Former Undertale fan ranks Sans AU's. Ask anything. (Also, just to clarify, I am NOT an AU fan. I used to be, being the reason I know some. (Also also, I did