Underswap Sans, ULCFan Wiki

Underswap is an AU where many of the characters' roles are swapped, as well as their personalities, though some quirks tend to stick in places, or are modified. Sans is the excitable, confident, extremely optimistic human hunter, while Papyrus is the laid back, protective bro following Chara

Underswap Sans (Canon), Wiki

Sans, TS!Underswap Wiki

Underswap Classic: Sans Fight! by Robby_Studio - Game Jolt

Sans, TS!Underswap Wiki

Underswap Sans, Wiki

Underswap and Fellswap - Sans and Frisk by WolfKIce on DeviantArt

Underswap Papyrus, ULCFan Wiki

Underswap!Sans, XTale Wiki

Underswap!Sans, Sans Battles Wiki

Underswap - Belief sans by Pixelbit0 on DeviantArt

Sans, Canon Underswap Wiki

Underswap Sans, Wiki

Sans, Canon Underswap Wiki

Underswap Sans, Wiki