21 - 40 of 8,426 Works in Sans (Undertale)/Reader
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You are suuuper obsessed with Galaxy and its thing, especially the universe! You spend over Years building a machine and another over years to make it perfect, night and day, even when you're sick, you still do the things you love.
You close your eyes and ears to the people who call you crazy, calling you mad, insulting your creation, Etc. Etc.
But who are they to stop you anyway??And dear god, after years of tears, blood, and mind... the MACHINE IS PERFECT! At least that was what you thought.
You get sucked by your own creation when you try to make coordination and testing on it, and now you're here.. with a skeleton.. oh my god
It's wonderful! YOUR MACHINE IS WORKING! HAH! You can't wait to slap the mouth that calls your creation useless by this INVENTION~
Well, after you successfully back to your own universe, survive on this world, well, you're gonna get help from the skeletons infront of you... right?
And then you can ask a few questions about this universe, hopefully he wants to answer them... he will... You're going to make sure he gonna help you, if it means begging.
Alright... here we go.
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Dust set his books down on the coffee table, managing to avoid collapsing. Where were the others? He looked around. The supply run had been mostly successful, but it had done a number on him. Dream had thrashed his ass, then Blue and Ink had handed it back to him neatly. There was also the problem of that human he had brought back…
This is my first fiction, so ignore it if it’s very cringe. Thanks!
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i burn for you and you don't even know my name by Sneakyfox55
Fandoms: Undertale (Video Game)
01 Dec 2025
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Sans has a job. An unassuming one, as a barista, with a cute little apron and everything. Y'know, just something to pay the bills until he can find something more stable; Hopefully.
He definitely doesn't intend for it to be a permanent thing.
(He doesn't, until you.)
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Continuation of "Pretty Like A Car Crash"
Crumble must prove to the facility that she can handle whatever is thrown at her, except sometimes the problems come from the skeletons that are supposed to help her.
It's up to her to prove everyone wrong.
Series
- Part 2 of Crumble and her Crumbling Life
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So I've seen someone else do this and asked myself, why not? I have loads of ideas/situations for fanfics yet have no time to write them or I end up just procrastinating for two years after posting the first chapter (if you're looking at my other fanfic no you aren't). So here goes nothing I guess.
Some will be longer than others, some I might expand on and make multiple chapters, but I don't think I'll make them into full fanfics. Some will have more oc's or more lore/backstory and some won't have any. Some will be about specific skeletons, others will be about all of them. There will be different tropes, jobs and personalities for Reader, and I might make them into a bit of a self-insert sometimes.
Again, if anyone likes any of these, please feel free to use them! But do tell me, mostly to read the end result ;)
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When you were ten years old, your parents sent you to stay with a relative of yours from Ebott. Their villa was situated up on the mountainside, and you loved to explore the forestry. One day the ground gave out and you fell Underground, and faced terrors beyond your imagination. You were missing for weeks.
After you managed to miraculously return to the surface, your parents were relieved - but deeply troubled by your 'delusional ramblings'. They were convinced you were 'crazy', and feared how that would reflect on their reputation. Your doctors advised sending you to an in-patient psychiatric facility, which is where you spent the next few years in intensive therapy and counseling.
15 years later, you're a young adult with a somewhat manageable grip on life. You keep your head down, attend the social events that are expected of you, and try to be as unnoticeable as possible. Your parents arranged a suitor for you, and you're to be wed within the next year.
That is, until, those monsters your parents and doctors tried to convince you weren't real suddenly crawled out from the Underground. And they're a lot different from what you remember.
[[Underfell!verse.]]
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You were just walking home. A tear in reality split open underneath your feet and suddenly you were falling.
Falling
FallingThen you fell up and onto the tiled floor of a basement lab.
Now all of a sudden you're in another world and surrounded by 6 strange skeletons (plus one's brother).
Being terrified of all things horror and monsters, what are you to do?*Will contain mature themes but no smut*
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What if Monsters didn't have magic?
What if Monsters didn't have a soul?
Magic wasn't a thing, goat monsters looked more like goats than humans, walking on all fours and eating whatever they wanted.
Spider Monsters weren't allowed to work in the food industry because of laws, Fire Monsters had to stay away from flammable objects.
Skeleton Monsters were extra fragile, they had to move with others just in case a bone got loose and fell out of place.
Magic wasn't a thing.
Or
Reader is a Skeleton from an AU where monsters have no magic.
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Monsters have come to the surface, and with that a lot of probelms have been caused, so maybe a marriage between two people from the two races might help?
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You and your family are just enjoying a nice day at the park, when a life changing event happens that ruins everything.
You get taken away to a facility to be tested on...
Life doesn't feel as peaceful as it once did, you hated your new life.
"I wish I could just go into those story books I used to read..."
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"I'd Rather Do Normal "People" Things...Thanks!" by Cr8ter_Eight
Fandoms: Undertale (Video Game)
30 Nov 2025
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You are a Normal Person in pretty boring world.
You wake up.
Brush your teeth.
Comb your hair.
The same repetitive, insigniFi6@^t- th!^g every $ingle day....
One day, you do the same thing.
On that same day, you don't notice that an Insanely huge skeleton has tumbled out of your closet.Amazing.
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You're a grad student at a house party. How many skeletons are you running into there? At least one you didn't expect.
(This explains nothing. Please read if you like Sans/Reader romance slice of life with plot, character relationships, fluff and eventual smut. Underfell headcannon is being used.)
(Time for a second note to reemphasize PLOT. Drowning in plot. Plot for days. Send help.)
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Y/N is a new employee at a bird sanctuary. They notice more and more strange things about this place. While working they meet six skeleton bird hybrids. Their suspicions about this supposed sanctuary grow- as does their relationships with the skeletons. Will their relationships last? And will they find out what this sanctuary is really about?
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Dust and Reader get saved from their doomed timeline by Nightmare. How will they adapt to their new life with two other murderous skeletons around?
SEQUEL TO "WHISPERS OF YOUR BLOOD" . I do recommend reading the "meeting tale" of Dust and Reader before this one, otherwise stuff will be confusing.
Series
- Part 2 of Whispers & Handcuffs
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After the battle, you look at your hands... why did I became a skeleton? by Quinme
Fandoms: Undertale (Video Game)
29 Nov 2025
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Your dear friend Reishu was in danger, she suddenly got attacked by a mysterious skeleton in a black and white, who carries a big blade on his back. In this fight you truly did your best to protect her, giving it all your efforts.
After a long battle, you lay on the ground, defeated and hurt, the only thing that's is on your mind is the fact that you managed to buy some time for your friend. That you did good.
The unknown skeleton lean closer to you, saying something, but you hear none of that, refusing to listen the words of the enemy. Despite it feeling like the end, you wish to do something before taking your last breath. You haven't used your magic for the past ten years because of how messed up it got after your father passed away, but now you do not care about messing up. With the last effort, you do your best in attempt to take this guy with you. Reaching for your soul, you use a spell to end this, to take rid of this intruder!
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"Llámame en medio de la noche
¿Por qué cuándo más te escucharía?
Caí bajo la fría luz de las estrellas
Puedo salvarte si me salvas
Siempre puedes hablar conmigo
Todo lo que necesitas hacer es llamarme... "Pequeño fragmento de la canción Call me little sunshine de Ghost.
- Language:
- Español
- Words:
- 13,121
- Chapters:
- 4/5
- Hits:
- 44
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Falling into the Underground wasn’t on your to-do list. Falling for two skeletons definitely wasn’t either.
Blue is sunshine bottled in bone—sweet, loud, and determined to make you smile even if it kills him. Rus is quiet, steady, and the kind of person who remembers your favorite tea. Between the two of them, you’re constantly flustered, overfed, and very, very loved.
When both brothers realize they’ve fallen for you, chaos ensues—except it’s the polite, apologetic kind of chaos where no one wants to hurt anyone else. What starts as a tangle of awkward affection becomes something honest and warm: a relationship built on trust, laughter, and a whole lot of skeleton hugs.
“WE CAN SHARE THEM!” Blue insists, bright as ever.
Rus sighs. “That’s not how dating works, bro.” -
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You have had a tough life that has left you scarred and untrusting of others. Growing up in a mage family obsessed with power and ensuring their lineage, you are the black sheep of the family, possessing a green soul of kindness and excelling in healing and growth rather than the combat magic your family specializes in. Trapped in a loveless relationship with a controlling, abusive partner chosen by your family to ensure a 'proper' match, you live in fear of triggering his anger, often resorting to your magic to heal yourself. Every aspect of your life is controlled by someone else, leaving you resigned to survival and scraping together what happiness you can.
What you could never foresee is the way a miserable night out with your fiance would lead you to a drunken one night stand with your soulmate.
Nor could you predict you would have 9 more soulmates out looking for you.
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You're a spy who is ordered to spy on the queen of monsters but two skeletons get in your way
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lets make it quick
You're a mage, one of the 7 great mages. You and the 6 other mages helped your kind during the war, and you all won. You trapped the monster inside the mountain of E-bott. After the war, everything was perfect, peace everywhere, and the mages ruled the world. But something bad happened, and all of a sudden, you were the only one to survive; the other 6... they died, or at least 5 of them. One of them was never heard from again.Being immortal and being hated by your own kind, what a hellish life, isn't it?
Hiding away from society for decades, until finally, the time comes and you return to society to be a normal human being.
But you're not a normal human, so you need to change your appearance to look older and older over the years.
Then you fake your death
and change your appearance again to become yourself… then repeat.
You decide to open an orphanage to cure your loneliness, and it works! And then you start a business.
Over the years, you become one of the richest women in history.
Everything was perfect
and then fate seems to like you too much and starts saying, "Hey, let's break the barrier and give this mage some life!"good luck!