Sr Pelo's Underpants - What happens when you spare Sans : r/Undertale

That's how it was. : r/Undertale

Underpants Genocide Reaction- Sparing Sans

Underpants Sans Style Conversion with Undertale Sa by Abbysek on DeviantArt

Underpants - True Ending : r/Undertale

UNDERPANTS SANS & PACMAN TEAM UP IN SURVIVAL MODE

Underpants, Undertale AU Wiki

Underpants Sans AUs Blank Template - Imgflip

Sans (Underpants), New Undertale Fanon AU Wiki

Does anyone remember this amazing AU? : r/Undertale

Undertale dialogue changes if you spared bosses on a genocide run (NOT one full run)