Alternate Universe - Underfell FanFiction

A Picture Is Worth A Thousand Words

A Picture Is Worth A Thousand Words

F/F
F/M
M/M
Other
G
Updated
13.04.2025
Fandom
Undertale (Video Game)
Characters
Other Character Tags to Be Added, Other Relationship Tags to Be Added, Reader, Sans, Papyrus, Frisk, Toriel, Alphys, Undyne, Sans/Reader, Toriel/Asgore, Alphys/Undyne,
Tags
Other Additional Tags to Be Added Alternate Universe - Underswap Alternate Universe - Underfell Alternate Universe - PTA Sans Alternate Universe - mafiatale Alternate Universe - Errortale Alternate Universe - Outertale
Sans/Reader undertale oneshots, each one using a different prompt/starter found on tumblr. I currently have 1500+ sitting in my computer, waiting for use.None are connected unless explicitly stated as such. Each oneshot ranges in length, rating, and...
Call me Mama

Call me Mama

F/F
F/M
M/M
Multi
Other
G
Updated
13.04.2025
Fandom
Undertale (Video Game)
Characters
Reader, Sans (Undertale), Papyrus (Undertale), Undyne (Undertale), Alphys (Undertale), Toriel (Undertale), Flowey (Undertale), Asgore Dreemurr, Sans/Reader, Other relationships I may put in the future, Button's (ButtonTale)
Tags
Fluff and Angst Reader-Insert Romance Minor Violence NSFW Knotting 18+ Alternate Universe - Underfell Minor Rape mama kink Badass Reader Firty yet Mothery reader
Reader has been in underground for two years, twisted by soul, and practically have the monsters of snowdin coward by her feet. But what happens if a certain skeleton catches her eye, what would become of him?Author: just a practice run on how everyt...