1 - 20 of 2,032 Works in Reader Is Not Chara (Undertale)
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a collection of one shots, all centered around sans and his alternate versions, for kinktober 2025. enjoy!
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You and Frisk decide to take a day off to have a picnic in Mt. Ebott, something to take your mind off work while waiting for winter.
So why, why are you now on the police office?
Why are you putting missing posters all around the city?
Why did you take them there? Where are they? Why did your worst nightmare become something real?Where are they?
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I don't have a summary i just pulled this out of my ass but if you like a slow burn with a Lot of Words and Feelings™ and Sans pleaseee give it a try. -
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Slowly, as if afraid to scare you, the skeleton extended its hand towards you. Most likely, it had no skin. Perhaps it had phalanges and bones. You doubted that a skeleton could have visible muscles. You wanted to check, casting a fleeting glance at the monster's hand.
Suddenly, you felt the pressure of something slightly sharp but strangely smooth on your cheek.
Oh.
The skeleton just poked you.OR
You jumped down, expecting to never open your eyes again. But you did, and then you found a skeleton to be stuck with for the rest of your days. Just the two of you.
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Being the cleric of an inter-dimentional war isn't that bad once you get used to it.
When a skeleton falls from a portal into your bedroom, rambling about things you'd always thought were fake, what would you do with everything he says? When he claims he needs to win a war against his very own brother, his bone and marrow, who are you to turn down his request to be his army's medic? When you realize you're falling ill, who are you to tell him something is wrong?
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Monsters have appeared from a mountain, in your town! Interested in this new development you head home with high hopes. Sadly it seems humans will be humans, and for some reason you keep getting caught in the cross fire. Luckily you've made some new friends to help you out along the way!
You were just about to head into the nearby town when your phone went off, it was a text. From Otto of all people. A video of him, and what looked like monsters walking behind him. "You should come home (Y/n), things just got interesting."
Reader is female (sorry) there will be smut at some point, don't know when though...
Series
- Part 1 of Blood N Bones Stuff
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You're an engineer who works for Ebott's best research facility in one of the labs; your lifelong dream after finding a journal on Mount Ebott when you were a kid. When you aren't in the lab being smart, you're gathering materials at the abandoned doll factory for the machine you're trying to build.
But one night, you meet a skeleton at the factory. Naturally, you lie about why you're there and say you're there to hunt ghosts. You befriend him and try to find a way to gather the materials while keeping up with that lie. But those lies catch up to you when you start to meet all the other skeletons.
Edit: As of Chapter 29, all chapters have been edited and fixed slightly!
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After a long, long day, all Killer wants to do is lie in bed and cuddle with you. But your work laptop says otherwise.
However, Killer is stubborn. No matter how tired he may be.
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The Beginning of the End by Theseus (WellThenFuckMeGentlyWithAChainsaw)
Fandoms: Undertale (Video Game)
10 Oct 2025
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There was nothing.
And then there was something.
What's it mean to exist? How do you define your own existence?I believe the moments that immediately stick to us after existence can define a person, so whatever meanings you can pull from your surroundings will shape how you act.
————————————————————————Like a demon reaching a hand to a demon, the angel extends a hand to another angle.
Existence isn't meant to be spent alone and unhappy, so isn't it understandable to do whatever brings you joy?
Series
- Part 1 of All I Need To Do Is Smile!
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Trying to unravel the mysterious death of your little sister and the location of your absent mother you find yourself among the foreign streets of Ebott. Picking up a desperate ad for a nightshift ranger for Ebott park, painfully unqualified and inexperienced in all sectors you vigilantly watch over the mountain and its surrounding forest.
Its there you find yourself finally feeling at peace, for it just to shatter as its there where you find him.
- Language:
- English
- Words:
- 5,303
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 44
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In a world where Humans and Monsters exist together with mild tensions here and there, your only issue is trying to find a place to stay, growing tired of sleeping in your car. Well your only issue, besides the fact that you're a cyborg in a world that hasn't grasped the idea of combining human and machine. A secret you're supposed to be keeping but aren't trying too hard to. Luckily, an old acquaintance of yours is being kind enough to offer you a place to stay, and for a dirt cheap price! There was no way you'd turn down a real bed and a roof over your head!
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You were going on a walk, its supposed to be good for you or something. Suddenly you get pulled into a party you knew nothing about with people you know nothing about. You were just minding your business, so why does everyone now think you're dating your skeletal neighbor?
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It's six years after the Emergence, and while most of the monsters decided to stay close to the mountain on the west coast, slowly but surely a good few made it over to the opposite coast and settled down in Washington DC. Besides the King and Queen and their human child - relocated to the political center of the US for obvious reasons, you mostly see dogs, bunnies, and cat monsters integrating themselves among your coworkers and neighbors. Things aren't perfect, but they're improving day by day.
You have a fulfilling job as a PR and Marketing Expert, a handful of close friends, and a stable and predictable routine.
When you randomly meet a brand new type of monster in town while late night shopping, you can't help but be frightened of him. After all- he's literally a living skeleton! Embarrassing, but at least you'll never have to see him again... right?
What happens when fate has other plans, and you just. keep. running into each other?
Let's find out.
Series
- Part 5 of The Butterfly Effect 💚💛🧡💜💙🩵❤️
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Bare Bones (Undertale Mafiatale/Mafiafell/Mobtale Sans and Reader Enemies to Lovers Romance) by aleppost
Fandoms: Undertale (Video Game)
06 Oct 2025
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After your mother (the last person that cared about you) passes away and you lose your job, you decide that you are going to move out of Ebott City to start a new life. On your last day in Ebbott City you make a wish into a fountain, and end up falling in. When you get out of the fountain however you find yourself face to face with a pair of skeleton brothers, and for some reason its now the 1930's???? It turns out that the Skeleton brothers are the head of the Mafia that runs your side of the city, and you now live in their district. Papyrus seems to be nice, Sans however is skeptical of you and your intentions and makes it known pretty quickly. Reader has to navigate living in a different time and figure out what their life will look like moving forward, and she wants these strange skeletons to be a part of it.
This is a slow-burn romance where Sans doesn't want to like you, but cannot seem to stay away. Enjoy!
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An octopus is calling you “Moonbeam”, go figure. by Vin_cant_sea
Fandoms: Undertale (Video Game), Five Nights at Freddy's
06 Oct 2025
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Reader is a time-traveler, a universe-hopper, whatever you want to say. They often wake up with a need to explore consuming them, so they do what they do best, go off into random universes and multiverse, and well, fuck around. Problem is: now they’ve caught the eye of a certain God, who looks a bit too much like a slime covered octopus for you to take them seriously. Said octopus has decided that they’ll die before they let you out of sight and is now chasing you through the multiverse.
Basically: You’re a literal chaos incarnation, and you’ve caught Nightmare’s eye. We don’t know if he wants you dead, or if he just wants you—but you fucked around, and now you’ll probably find out.
Series
- Part 1 of Universe-hopping
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As a person, falling in love wasn't on the top of your priority list. If it happened, it happened, but you weren't all too bitter if it didn't. Maybe whatever social higher power wasn't too happy about that, so it just had to partner you up with some nerdy idiot who flew too close to the sun and ripped a self-shaped hole in the middle of reality itself.
And then you also fell in love with his brother. Too bad that you aren't too up for polygamy.
Inspired by Milk Tea and Souls by Lady_Flame96 and Soulfound by yeo_sin, Title inspired by Baile Involvidable by Bad Bunny
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Making A Monster by absurdmagewrites
Fandoms: Undertale (Video Game), Underfell-fandom, Underswap-Fandom, Swapfell-Fandom, Fellswap-Fandom, Fellswap Gold-Fandom, Horrortale-fandom, Crafttale-Fandom, Seaswap-Fandom
05 Oct 2025
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Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.
A skeleton monster to be precise.
With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.
What a surprise for you when you find out that someone does. A lot of someones.
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I Wanna Die so I can Taste your Name on my Final Breath by anachronism789
Fandoms: Undertale (Video Game), Deltarune (Video Game)
04 Oct 2025
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Dr. W. D. Gaster was God’s favorite. They're both totally normal about this
aka wing gaster fucks god for very complex incontrovertible reasons
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- Language:
- English
- Words:
- 1,675
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 124
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Summary
In which your teacher decides to assign a social experiment project and lets you do whatever you want as long as you dontc harm anyone. You decide a Confession booth would be nice and see how many people and Monsters add confessions into the jar, whether they be sad, happy, crude, or awkward, you would happily accept them all.
So, you happily set up the booth with a few sharpies, notecards, a jar, sign, camera, and the not, 'Leave a Confession. You came back after your class and low and behold your confession booth was a success.
What you couldn't expect was that later that night while reading and reviewing the footage of the day you would catch a specifical skeleton acquaintance leaving a confession that would whole heartedly screw your night up. And get his family involved because who doesn't like having a gaggle of skeletons breathing down their neck.
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Demon Hunting is practically the family business.
When you were a child, a demon killed your entire family. You were taken in by the same guild your parents worked for. The last demon hunter of your family, you want to prove that you can succeed in the legacy. You trained your entire life to take vengeance on the creatures that ruined your life.
You finally got your chance when your initiation exam was scheduled. Fate decides that you will change history in a slightly different way than you had thought. You never could have anticipated running into the Seven Deadly Sins themselves on your first night out.