1 - 20 of 3,478 Works in Papyrus (Undertale)/Reader
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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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So, I heard you like skeletons...
Reader insert prompt fills for @skeletonh0e's sans-centric Kinktober challenge on tumblr
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A perverted love child between Undertale and Overlord consummated with boredom and edgy hormones.
Osoma, a game that you had developed alongside your fellow developers, is scheduled to shut down and have all of its servers wiped today. Saddened to see your friends leave and to have something you have worked hard on end you decide to use the last few minutes of your time making a set of devilishly handsome Undertale NPC characters. When you were done you accepted what you had made and decided to stay in till the timer hit zero. Unfortunately, even though you were done with the game the game itself did not seem done with you. Now trapped and surrounded by your new creations giving you all sorts of devious ideas you need to decide what to do. Do you go along with what they say and take over the new lands that popped up around the original land of Osoma itself, find a way to get back to your own reality, or allow the first high level monster to kill you?
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I know I know, it's supposed to be kinktober, but hey? Let's do Ausctober, sha'll we? sksks (CANCELLED)
there is no smut! but there will be some smoochie :D
different chapter, different au, different theme!
let's begin, sha'll we?
NOTICE!: Fuck this, my RL ain't allow me to do it, UGH I HATE IT SO MUCH but... I'm not gonna abandon this, instead, I'm gonna fill this with oneshot! or some scramble
Sorry I give up huhu
Chapter: 1. Remembering you (ut sans/reader)
Chapter: 2. A meeting with you is sweet… more sweet than the dessert (swap sans/reader)
Chapter: 3. How far? Another universe, baby. (fell sans/reader)
Chapter: 4. The way to the hospital (HT sans/reader)
Chapter: 5. - -
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Three years into college and of course shit hit the fan. Thankfully for you, your good friends Sans and Papyrus are able to help you and offer you a room in their house when things go sideways for you. The catch? You get to meet all of their family and join in on the chaos that is the Serif family.
What could possibly go wrong?
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Here we are again! Another series of Undertale one-shots following the Fictober prompts and featuring the skeleton brothers as love interests to either my nameless or named girlies.
Just like the past two years, if you'd like any of these to be turned into fics, then please let me know in the comments! If enough people show they're interested, then it'll be added to my list of future fanfics! Five requests are what's needed for them to be added.
And if you choose to wait till the end of the month to read, that's okay! Requests can be made up until November 7th, when I post the list of the lucky winners!
Hope you all enjoy!
Series
- Part 3 of Fictober
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Whumptober 2025!!!! but its ALL Papyrus?! I love beating up my favs
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You had been playing an immersive VR game: The World Of Aspenheim. However, after 10 years, the servers were about to close and to give your last farewells, you decided to stay online until the servers kicked you out. In the end, you fell asleep on the golden throne...
Only to wake up still logged into the game!? And why couldn't you log out!? And who was the one knocking on the door!?
"YOUR HIGHNESS? ARE YOU AWAKE?"
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~Someone Loved Me~ Fell sans x reader by T4K31T2MYGR4V3
Fandoms: Undertale (Video Game), Underfell - Fandom
04 Oct 2025
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Typical Fell sans x reader fanfic, Through unfortunate circumstances some asshole skeleton enters your life and of course chaos and love follows, glamorous gala's, mafia business, bar fights and whatever else. (A better summary is in the notes) This is my first UnderFell fanfic i actually have the courage to upload, i am still learning how to properly edit and upload my stories on ao3 so criticism is very welcomed!
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After forty years living in the same small town, it's time for you to move on to a new place. You pack all your essentials and head for a new place to live: Ebbott. There you find the one thing you've been denying yourself ever since you lost your family centuries ago. Can you let these skeletons in and know your deepest secret?
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- Language:
- English
- Words:
- 1,675
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 64
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Once a year a sacrifice is chosen to sustain the god of misery. One soul sacrificed so that the rest of the world can be safe. You are this yeas lucky winner and for the next 365 days, you belong to Terror.
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IT'S THAT TIME OF THE YEAR!
Kinktober time~!So yeh this is basically short drabbles of smut. Some will be longer, some will be shorter but I'm gonna try my best to make them juicy~
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You should be dead. Everyone else in this god forsaken city died as soon as the barrier came down and these creatures, these MONSTERS, invaded Ebott City. You got lucky, or maybe not.
You had the bloodline of a mage. Which meant you could create barriers. In a moment of panic you had created a barrier in your apartment, locking you and your neighbor inside, and the monsters out.
But now the clock was ticking and you had a group of skeletons sniffing around your apartment, telling you that they couldn’t wait to drag you back to their den.
They meant as food…. r-right?
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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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Skeletons, roommates, yea no by UnderTrash
Fandoms: Undertale, Underfell - Fandom, Swapfell - Fandom, underswap, female reader - Fandom, SAN’s x reader, Papyrus x reader - Fandom, bullying - Fandom, Mutt from swapfell, undertale x reader - Fandom, Grillby’s, reader getting bullied, (y/n) - Fandom, Selfharm - Fandom, cheating - Fandom, Mutt x reader - Fandom, Underfell sans Red, Red x reader - Fandom, G sans - Fandom, G pap - Fandom, Mafiatail bros, roommates - Fandom, Fanfic - Fandom, anxious reader - Fandom, Mafiafell bros - Fandom, reader as mantle breakdowns, Killer sans - Fandom, Killer sans is a asshole, Killer x reader - Fandom, mental illness - Fandom, Non-Consent - Fandom, sexual harassment - Fandom, Romance - Fandom, Poly relationship - Fandom, Mafiafell sans - Fandom, Mafiafell Papyrus - Fandom, AsylumTale sans - Fandom, Lusttale sans - Fandom, Lusttale papyrus - Fandom, lustfell sans - Fandom, Lustfell papyrus - Fandom, friends to lovers - Fandom, Y/n just going through trauma, Chubby reader insert - Fandom
03 Oct 2025
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You’re a bit of a nervous wreck type of girl, chew on ice as you hide into your room. Though no one could blame you, after all you lived with asshole skeletons that makes it their goal to push you around and bully you.
Why you may ask?
ALL BECAUSE A BITCH NAME LILIAN!
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They all hate you but if they gave you a chance they might like you…
(Heavily been Edited PLEASE RE-READ ) nov/13/2023 - feb/12/2024
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You my dear reader are transported in your own au as sans then when you have just come into accepting life your comfort was washed away by one tiny mistake
You have transported to one of the fanfics or at least inspired by it you have read almost daily it was the typical ani harem fanfic were a human called Y/n is a very broke collage student
And then when they get an offer from their childhood friend to live with their numerous roommates that are more like actual boyfriends then roommates
the childhood friend will most likely spread rumors about Y/n which will cause the skeletons to dislike them then end up loving them in the end
But with you there things will change maybe help Y/n along the way or sabatoge her or maybe even matchmake her to another person!
Read and find out what happens to our dear reader
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The island had been forgotten for a long time now, the monsters believed that they would now live in peace on their island far from the human world. But humans are the most megalomaniac beings of all. Eager for riches, they began to plunder all over the island, and the monsters were unable to counter them. But what would happen if a scientist and a monster agreed to create new life forms, to stop all this?
Our skeletons will have DNA from dangerous animals inside them!
O and the island suffers from a shortage of females so... it will be fun🤭
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You Don't Call Her the Cool Aunt For Nothin' by AliLeDork
Fandoms: Undertale (Video Game)
02 Oct 2025
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You realize that the life you pushed for yourself to build was never truly what fitted you- so, after a mental break down and dropping out of collage later- your heading to the only home you ever knew. Upon merely arriving at your Aunt's home- she informed you much to late that it wasn't just going to be her your going home to.