UT
12 stories
Undertale: Sans x Reader by Allygagne4708
Allygagne4708
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A girl is told about the myth of Mt.Ebot and ends up going to the mountain to investigate it herself. She ends up falling into the monsters home. With out expecting it, she ends up making friends and she finds someone who she has stronger feelings for.
Cryophobia - (Sans x Reader) by trainerblueoak
trainerblueoak
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Next person to comment on this monstrosity gets fucking vored!! × ❝You made your choice a long time ago.❞
UF!Sans X Reader (Finished) by _The_Creator_
_The_Creator_
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Unlike other stories, monsters and humans have already joined. Nothing was ever easy for you AT ALL. Your mom died when you were 6, and ever since then, your dad was.... different. Your a 17 year old girl, and you ran away when you were 15. You decided you couldn't take the pain. Hope you enjoy my story, and sorry if I misspell some words. Autocorrect never works correctly.
An Old Friend ' Underfell Sans x Reader ' by Sillychick120
Sillychick120
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You and Sans had been friends since you were little, when the monsters had to leave, you were really upset that your only friend, Red as you called him, had to leave. Will he remember you after 7 years of being in the underground? Or will he just forget about you? To find out, read 'An Old Friend' Underfell Sans x Reader.
The Lovers-Underfell Sans X Reader  DISCONTINUED by StrayLuluCat
StrayLuluCat
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DISCONTINUED This is where a little UnderFell Sans X Reader is going on. I have posted this on two other websites already. Cover by RandomColorNice from Deviantart. (Thanks for letting me use it!)
(Sans x Reader) When Two Souls Meet by ZanaBSparrows
ZanaBSparrows
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Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister. Please note the the story is primarily on Quotev, so updates to Wattpad may be late, or lag behind that of Quotev. The story also has the potential to become mature. (I haven't decided yet.)
Castle's Pet (Bad Guys X Reader) by EmelinStriker
EmelinStriker
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[Highest Rank: #1 in "sans"] [Second Highest Rank: #18 in "xreader"] (Girls only!) (Earlier updates are on my Quotev account!) WARNING: Profanity and Violence! You were a normal 17 years old girl from the Undertale universe, you fell down Mt. Ebott when you were 15 and you've lived in the Ruins with Toriel. Oddly enough, you haven't heard anything from (F/N) since you fell. And you knew he planned something. The Villains needed a new plan against the Star Sanses and some other heroes. What happens if a mysterious cloaked man tells them about about you?
When Two Fates Intertwine (Sans x Reader) by ZanaBSparrows
ZanaBSparrows
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[THIS IS A SEQUEL TO MY OTHER FANFIC "WHEN TWO SOULS MEET!" If you haven't read it, I would highly suggest it--the story won't make much sense otherwise.] Sans has finally found someone he can trust--Frisk's sister, the eighth fallen human. After months of step-siding and awkward interactions, the two are finally a couple. Things are finally falling into place--there are no more resets, and Chara and Flowey have been a lot more quiet in the last few months. But things can't stay this way... can they?
Corrupted Timeline: UF!Sans X Reader by xXDiabolicEnigmaXx
xXDiabolicEnigmaXx
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While hiking with your family at Mt.Ebott, you end up falling down a hole in another world where you encounter monsters who want to kill you. Will you be able to change their hearts and bring back hope? Or will you be killed trying?
Undertale: The Third Sibling by Musicalhorse01
Musicalhorse01
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It was just a peaceful day in Snowdin. Everyone was just doing what they normally do in the underground. The Nicecream guy kept selling, monster kid was playing around, Grillby was cleaning up some spilled ketchup. Even in the Skeleton household, Sans was chillin in his room while Papyrus was working on his spaghetti. But not everything is what it seems Suddenly, a loud thump was heard outside of the brothers house... ~~~~ Hewo!!! This is my first Undertail story ^~^ hope you all enjoy this as much as me writing it! Highest ratings: #1 sans #1 gaster #1 outer #2 ink #5 blueberry #6 undertale