1 - 20 of 23,377 Works in Papyrus (Undertale)
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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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"Yo... yo soy... Un muy jodido problema" by Pptxie
Fandoms: Marvel Cinematic Universe, Undertale (Video Game), X-Men - All Media Types, Thunderbolts (Movie 2025)
09 Oct 2025
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"Deberías odiarme, Pepper! Soy un monstruo! Maté a mucha gente! Maté a mi mamá! Soy horrible!"
Le grito a Pepper con furia y ansiedad en mi tono, mis manos de metal brillan en respuesta a mi sentir, al verla retroceder con miedo escondiendo a Morgan detrás de ella me volteo intentando calmarme, después de varios segundos regulando mi respiración hablo más tranquila, sintiendo lágrimas saliendo de mis ojos por todo lo que deseo expresar pero no puedo, no siento que merezca decírselo, 'No merezco sentirme así' pienso.
"Yo no soy como el, Pots, no soy un héroe. El mundo lo sabe, tu lo sabes, yo lo sé... el.. el lo sabía"
Digo saliendo de la habitación sin volver ni voltear, empiezo a correr hacia la ventana abierta en la cabaña cuando escucho a Pepper llamarme, 'No, necesito ir con Bucky, no se porqué me siento así, se suponía que la terapia me estaba ayudando'. Digo saltando de la ventana antes de encender mis propulsores y dirigirme hacia la torre de los "Nuevos Vengadores" como nos nombró Valentía.
- Language:
- Español
- Words:
- 2,390
- Chapters:
- 2/?
- Hits:
- 4
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OVERWRITE Aftermath - Chapter 1: The First Domino by OVERWRITEDimp
Fandoms: Sonic the Hedgehog - All Media Types, Undertale (Video Game), Dragon Ball, Five Nights at Freddy's
09 Oct 2025
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We all like crossovers, right? They couldn't possibly get out of control...right?
After a chain of events lead to Sonic and a few others getting assimilated into the world of XTale, many changes occur as the rules of the Omniverse change to keep itself stable, which sets off a chain reaction that will change reality forever. -
Same You, Different Font by radskull69
Fandoms: Undertale (Video Game), Deltarune (Video Game)
09 Oct 2025
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Ah yes. The classic ‘’Heather’ convinces the skeletons you’re an evil human so now it’s a EVIL reverse harem’. Right?
Oh? But what’s this? A TWIST?
Sans couldn’t live with himself after what happened to you, going near insane after you’re gone. So behind the others back he uses the machine to undo what he did, except it didn’t. He can still feel his sins crawling on his back.
Oh well, it’ll all be worth it once he has you back in his cold hands again. Screw the other skeletons.
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You were god's plaything. And you really, really, just didn't care anymore. Your life is aimless, and you really just want it to all stop. But it won't. So what do you do? Just start again.
Series
- Part 13 of Reader Inserts
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I’m safe here (I’ll wait for a brighter day) by Ultimate_Sugar
Fandoms: Undertale (Video Game)
09 Oct 2025
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Gaster introduces his littlest son to a brand new game they can play, just the two of them.
This can only go well, of course.
(formally named 'soap')
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Undertale Kinktober 2025 hypnosis edition by Chris_ghosty77
Fandoms: Undertale (Video Game)
09 Oct 2025
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Summary
New kinktober! One chapter a day for the entire month!!! With a list I made myself, very excited to show everything I've written.
Just like the other ones every chapter contains some form of hypnosis/mind control/brainwashing. I'll do my best to tag but i can't tag absolutely everything so look at the warnings at each chapter or in the table of contents.Series
- Part 14 of Undertail hypnosis series
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A Well-Respected Man (By The Kinks) by sedimentttttttt
Fandoms: Undertale (Video Game), underfe
09 Oct 2025
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Sans has been mentally unwell for a pretty long time now, so he thought he'd just get used to it. But his NEET ways are catching up to him, so time to get a job! Lucky for him, his boss is ... Sexy?? Whaatt?? Sexy boss??
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Every year on the anniversary of the Truce between the Bad and the Star Sanses Nightmare hosts a party at the castle for all to attend. We meet the players in the party.... At the end an unexpected guest to the multiverse makes their apperance....
The tags will constantly be updated as the story goes
Series
- Part 2 of Into the Multiverse
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Sans did not remember his previous name, only that he had been human. Rebirth in Undertale was novel, but he adapted, until he realized that the universe he was in was not the original one.
Unfortunately, it was too late when the machine took him to another universe, into a room full of skeletons.
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Sans no recordaba su nombre anterior, solo haber sido un humano. Renacer en Undertale fue una novedad, pero se adaptó, hasta que cayó en cuenta de que el universo en el que estaba no era el original.Lamentablemente, ya era tarde cuando la máquina lo llevo a otro universo en un cuarto lleno de esqueletos.
Nota: Sé que suena como tragedia, pero en realidad es una historia bastante esponjosa de curación, o al menos eso intento. Nuestro protagonista tiene mucho trauma y lo va a sanar en una mansión llena de esqueletos incómodos
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A FINE LINE BETWEEN ORANGE AND YELLOW by Fantasy_Artist
Fandoms: Undertale (Video Game), Original Work
09 Oct 2025
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While Aneira didn't necessarily believe monsters existed, she did find the fact that everyone and their dog still did might mean something. Her childhood town of Beddgelert believed in monsters trapped under the mountains near their home that would need a seventh soul now to break out and destroy lands.
Aneira also knew that she needed to figure out what happened to the kid she was friends with who went missing. Which was how she found herself having fallen (probably) hundreds of meters below a mountain inside a cave system. Was she stupid for leaving without telling people where she was going, definitely, but, to be fair, she didn't expect to fall; she couldn't even see the hole.
Injured and wanting to go home, Aneira braves through the underground cave systems, finding MONSTERS both friendly and foes, learning about what happened to all the previous (children) HUMANS that fell.
tldr: Aneira falls instead of Frisk, is injured and is too stubborn not to use this chance to find out what happened to a friend (definitely dead by now, but she still wants to confirm), the Undertale cast feels like something is different, but not what. They also live in Wales here because why not?
Series
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The Integration program is an arrangement to attempt at communicating between humans and monsters. 7 humans being sent down into Mt. Ebbott, each presenting something new that humans could offer the monsters. Through a tight and strict contract with the King and Queen, the Integration Program was formed. But there may be more than what they are letting on.. as a certain scientist would come to find.
- Language:
- English
- Words:
- 2,338
- Chapters:
- 1/1
- Hits:
- 9
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The host, the trial, and the smell of hate by Youareagoldfish
Fandoms: Undertale (Video Game)
09 Oct 2025
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Summary
Set in the shifter au, Papyrus is a shifter.
He is found out, and those that called themselves his friends have found a way to discover when and how their Papyrus was killed and replaced.
Uh, the process makes him pretty sick, and then I get to write lots of hurt comfort :D
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You fell.
Which honestly sucks ass.
You had been feeling weird, in your chest, for a while now.
Not sure how you ended up in a world of monsters but you do know one thing.
Your chest is pulling you towards something. And the closer you get, the more whole you feel.
You just hope you don't have to keep dying to get what your SOUL desires.
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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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A Jaded Emerald by KTamao205
Fandoms: Harry Potter - J. K. Rowling, Undertale (Video Game)
08 Oct 2025
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Abandoned on Mt. Ebott at the tender age of five, young Harry's unsurprisingly died, but Death's always had a weird relationship with his variant... Meanwhile, before Flowey's revival as souless talking flower, Sans makes a discovery under the mound of snow, Papyrus has always wanted to be a big brother anyways.
*Edited Summary (29/09/2025)
Series
- Part 1 of ArcalithVerse
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Hiiii guys 😗🥲 it's been so long ya'll oh my gosh 😭😭😭
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Getting a job at an aquarium was not something Gustav ever thought he'd be getting into.
He went to college, he studied culinary, he was great. But, y'know. Shit happens. Plans fall through. And you take chances.
So! When he stepped foot into that private area, he assumed it was some rare fish- although, while technically yes they are rare fish. Eeeeeh, he doesn't think.... that really counts.
Mermen.
Jesus christ what fucking dream has refused to loosen its grip on him.
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It Takes Time To Heal by Almondwater
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
08 Oct 2025
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Follow Izumi as she falls into the underground, wishing for her death, but Toriel is there to guide her and heal her.
Series
- Part 4 of my hero tale universe
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Kinktober 2025 by littlexsiren
Fandoms: Undertale (Video Game), Mass Effect Trilogy, The Avengers (Marvel Movies), Star Wars - All Media Types, InuYasha - A Feudal Fairy Tale, Five Nights at Freddy's, Naruto (Anime & Manga), Call of Duty (Video Games)
08 Oct 2025
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Tis the season!
Welcome to my first ever Kinktober Collection! I figured this would be a good challenge to get me back into the swing of things so I can finally update my other fics. This one shot collection will contain my favorite fandoms and mostly be reader-insert and Original Female Characters (a mix of 2nd and 3rd person POV). I make no promises that I'll have 31 one-shots for y'all to read, but damn I'll do my best to give ya somethin'.
Remember, this is an ARCHIVE that gives you the option to filter out tags you DO NOT like to read. If you don't like it, don't read it.
**I'll be updating relationship tags as I upload chapters & tags are subject to change**
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Years after monster and human society merge, a young monster returns to the Underground with the intention of finding a story to tell. She finds that story in a stack of well loved letters between one Cathode and Mailman.