1 - 20 of 684 Works in Alternate Universe - Bittybones (Undertale)
Navigation
Listing Works
-
Tags
Summary
Writing ideas that come to me at the moment, which may or may not be inspired by: Music, my drawings (or others), and/or other fanfics/videos.
For example: (I drew this)
Title: "The Radical Paradox" -Idk-
Relationship: Brotherhood.
Where Fresh (a parasite) feels a certain need to check on Doc (or Sci) to see if he's okay. This happens when Doc receives too many visits due to his knowledge of the multiverse, which leaves him exposed to danger and other... insinuations.
No one is happy with this arrangement (right?), which leads to various situations.- Language:
- English
- Words:
- 2,214
- Chapters:
- 2/?
- Hits:
- 26
-
Tags
Summary
Noriko works for the Ebott police department in the newly established special bitty unit, her first assignment to go undercover to get into the bitty fighting rings now that the government has given the small monsters all the same rights as their full sized counterparts. What she didn't expect was for her first assignment to have a hiccup in the form of finding something unexpected in an ally on her way to make contact with her in into the rings.
Life in the rings was hell, being sold off to be a breeder was probably even worse. Though dusting in some filthy ally by the jaws of a mangy mutt was not the way he expected his great escape from hell to end.
-
Through Small Hands: The Bittybones Archives by StrawberyLover
Fandoms: Undertale (Video Game)
25 Oct 2025
Tags
Summary
In a world where miniature skeletons known as Bitties live openly among humans and monsters, researcher Dr. Y/N L/N is tasked with compiling the first comprehensive study of their existence — a collection of field reports that will define how the world understands them for generations to come.
What begins as detached documentation soon unravels into something deeper.
Through every encounter — a gruff Underfell bitty learning to trust again, a bright Underswap duo lighting up their home, a quiet Mafiaswap pair who speak in riddles and loyalty — Y/N starts to see the lines between science and empathy blur.Each tiny skeleton carries a fragment of its universe’s soul — hope, rage, love, tragedy — and as Y/N listens, observes, and sometimes reaches out, they begin to uncover a truth hidden within the multiverse itself:
that even the smallest beings can carry the weight of infinite worlds in their bones.
-
Your New Life as a Bitty Owner! Interactive Story by Salzab
Fandoms: Undertale (Video Game)
24 Oct 2025
Tags
Summary
Welcome to your very own Bitty adventure! A story led by Polls to make choices, and by reader suggestions in the comments. You can suggest directions, actions, speech, shopping choices, styles the bitties might like, anything that I can incorporate into the story!
-
Tags
Summary
Dustin already has one "rain-soaked shoebox" rescue bitty and happens to find another tied up in a drawer at a house party he's dragged to. Bittybone burglary might be a crime, but Dustin isn't going to let the law stop him from being a good person.
-
Tags
Summary
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
-
Tags
Summary
A bitty reader goes on a crime-solving spree across the multiverse.
*You don’t have to read the previous fic to start here.
This is a continuation, but thanks to the amnesiac plotline, it should also work as a standalone.Series
- Part 3 of Avaverse
-
Tags
Summary
This is where i will be posting random drabbles of Undertale related dreams i've had (hence the name Dreambbles)
most if not all of these will be mashups with something else (as dreams do)
(tags/warnings and such will be updated as i go and i will put individual warnings/tags if needed in the summery of each chapter)
Series
- Part 3 of Anjel's Bizarre Undertale Adventures
-
Tags
Summary
Running through that forest you felt relived
No more fighting no more rings
No more experiments
No more cages
And most importantly your bitty where with you
Wait…are those…more skeletons!?P.S. I edited the first chapters rearead them please!
-
maybe this is a sign that i’m all out of luck, not that i had much of that in my life before by Candy_Cryptid
Fandoms: Undertale (Video Game)
08 Oct 2025
Tags
Summary
Dream crosses his arms. “We don’t even look alike.”
….
“Don’t look at me like that!” Dream huffs and turns away.
Series
- Part 4 of Inktobertale 2025
- Part 6 of Ink’s Adventures
-
Tags
Summary
Life isn’t fair, case in point, you didn’t expect to be trudging through the snow to the corner store to pick up some much needed, over priced, feminine hygiene products while trying not to bleed all over yourself all because you failed to remember to pick them up with your normal shopping. That’s the thing, no one ever said life was meant to be fair did they?
~*~
Promises were just words, promises of home, safety, love. Only ever worth something if the person kept those words close to their soul. That was something he learned pretty damn quick. Built for love, to be a friend, a companion, tossed into the rings to be a fighter, something he was never meant to be. The only promise he knew he could trust were the few he made to himself, the promise to never fall for the sweet lies of a pretty face again.
~*~
What happens when two souls who honestly need each other, don’t know how to open up and trust? Can love, trust, and home be found when the world has proven that trust is a dangerous thing? Can they get over the hurt that this unfair world has piled on them? Open up to each other and maybe, just maybe find the home they both need? -
Tags
Summary
Nightmare had been so happy to get adopted, he was finally going to know the life all the bitties wished they had ! If he had knew what was waiting for him, he wouldn't have been so excited...
The worst years of his life passed very slowly, and when he was tossed outside under the rain, he had thought it would finally be the end, that he would finally stop hurting... but someone saw him, and decided to give him a new chance at life, a new home, one in which he would be fine...
Series
- Part 2 of Bitty AU
-
Kustard Week 2025 - a PIE RAT's party-life for me by Anjel_X
Fandoms: Undertale (Video Game)
30 Sep 2025
Tags
Summary
Sans and Red are at the yearly all Skeleton Multiversal costume party and as usual, they put as little effort into their costumes as they can.
This is my fic for this year's Kustard Week using all the prompts in one shot.
This fic is set in the same 'world' as the ones i did for Kustard Week 2023, Fontcest May event 2024 and chapter 9 of Skelemonth 2024 and happens in the nebulous future (so there will be references to those fics)
Series
-
Tags
Summary
Here is a place where some of my other works, or Undertale short story blips, will make their way into the world. Some have the potential to become full stories if liked enough.
It is time some of these were shared.
-
Tags
Summary
Reader falls into a state of apathy after a major tragic event that gets them to seek help. They are selected to be give a service Bitty when found out they live by yourself. What happens when the reader starts to dig up the past. In a world of magic and secrets unexplainable things might happen. At least you wont be alone.
-
Tags
Summary
A new series for Kustard week 2025.
Prompt: blue and red makes purple
Ever heard of a yandere bitty? How about two?
Series
- Part 8 of Kustard week
-
Justice is BLIND to evil doing UNSPEAKable acts of kindness by Anjel_X for silverryu25
Fandoms: Undertale (Video Game)
15 Sep 2025
Tags
Summary
When a horrible event happens to one unfortunate AU, their saviors end up being the last people one would expect...
Why would the bad guys do such an act of kindness... and is there more to it than that... they'll just have to hope a certain Trio doesn't give them a Bad Time™ in the process...A Kustard fic with an unexpected twist in the form of a Nightmarish poly of miscreants
My Secret Santa Gyftfic for fellow Kustard and pun lover, the SANSational Silverryu!
Series
-
My Soul Found Its Place With You by SpookyBxtch for yeo_sin
Fandoms: Undertale (Video Game)
03 Sep 2025
Tags
Summary
DeepC ripples, the air abuzz with a steady stream of their magic. Without an Encounter or active Intent to force the latent magic into the shape of an attack, the magic seeks the closest conductor; you.
It sinks into your skin and works down your arm and into your hand and through the petal — jittering from the feeling, you watch the paste crackle white, the magic sinking in and creating a stronger conduit for your own Soul’s passive magic to start funneling through. From where your bloom has been set, the strange substance begins to flush a deep purple-red shade, twitching and flexing and rippling in colourful waves.
Honestly, you should be forgiven for nearly screaming when the paste swells — with a thick, almost viscous gurgling sound, it swallows your finger clear up to the base knuckle. Shuddering with childish disgust, you struggle not to throw it off and squeal, the paste starting to go from red-purple to a pasty white shade the longer it clings to your skin, rapidly becoming thinner and more runny.
A final burble, a loud, wet pop.
And then…
-
AKA: I have no self control and started another long-form fic despite knowing that I have undiagnosed ADHD -
Tags
Summary
Nightmare was a rather lonely bitty, a defective one saved at the last minute, he had been waiting for so long to be adopted, but why did it have to be by the three most scary skeletons he had ever seen ?
Series
- Part 1 of Bitty AU
-
Tags
Summary
A little Edgy bitty comes into your life in the giftmas season, choosing you to plague.
He's worse for wear, wont let you near him, and seems to only want to steal your stuff.
He wasn't always this way though...
A Bitty assigned to you request, for Micespaceart/several-things on Tumblr
This has turned into a 2-parter, by the way!