1 - 20 of 8,218 Works in Sans (Undertale)/Reader
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So you got woken up in the middle of the night by your new neighbors... no biggie! You're sure they're just excited to be in a new (cheap) apartment. So you decide to introduce yourself to them when they get settled in.
But to your surprise, your new neighbor just so happens to be a skeleton!
"Oh!" You say, surprised by your neighbor's appearance, "Uh hey! Welcome to the unit, I'm your neighbor"
"oh! hey i'm sans" He smiles, lazily copying your initial reaction.You hold your hand out to shake, he looks at your hand for a moment before accepting it.
when all of a sudden...
PPPPPPRRRT!
Was that a... whoopie cushion in his hand?
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Your closest friend on campus is an Omega named Papyrus you met at orientation. He would be your best friend if it wasn't for a complication that came with being Papyrus's friend. His older brother, the Alpha Sans, who seemed like he was always ready with a threat or an uncomfortable observation.
Overprotective by default or maybe just the right amount of protective given what happened your third week into the school year.Series
- Part 2 of Transition Metals
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Recently having moved away from home and to the big city of Ebott, you’re now pursuing your dreams of becoming one of the best Siren Specialists out there. To accomplish these ambitious dreams of yours, you’ve recently acquired a job at the Ebott Rehabilitation Facility. As the newest Siren Specialist on the job, you’ve got quite a lot to learn, but you’re sure you’ll be one of the best in no time. Especially considering you’ve got quite a lot of sirens to rehabilitate.
Series
- Part 1 of Tundra's Undertale Fics
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A place to plant all of my spicy little seeds. Semi-edited smutlets, imagines and drabbles from discord and my tumblr.
Series
- Part 3 of PROPAGANDA
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They say life is full of surprises, but [Name] never expected to end up in an entirely different universe, one filled with monsters, souls, and magic. But this isn’t some happy fairytale; it’s reality. And reality bites.
Adapting to this strange new universe feels impossible, especially when the skeletal monsters causing you trouble also happen to be your roommates. And 'passive-aggressive' doesn’t even begin to cover it. Still, no matter how lost or out of place you feel, you refuse to let go of hope.
After all, if life can surprise you once... who’s to say it won’t surprise you again?
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A collection of Undertale UTMV one-shots and small drabbles that I don't want to make entire stories for.
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Spending time with your beloved royals guards and advisors was always the fondest moment of your day. You loved them all, they were your home.
This was a dream you hoped would never end.
You could have never predicted what would come of this dream, and how quickly it would shatter.
Nicknames for clarity:
UT Sans: Sans
UT Paps: PapyrusUS Sans: Blue
US Paps: StretchUF Sans: Red
UF Paps: EdgeSF Sans: Nox
SF Paps: Mutt -
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It’s fun being dead.
Or undead, rather, as your sister likes to correct you. Your dear sister is the kind of person who took her dark arts very seriously. Or, her necromancy, rather. You’ll be the first to admit, you don’t know a lot about her school of magic. She doesn’t know much about yours either, but it’s always enjoyable to discuss magical theory with her. She says it’s not her specialty, but she tends to under credit herself.
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you wanted to be loved so desperately,
that your fingers shook with ityou're not beautiful
but you could be./emily palermo (slightly altered)
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You've come all this way-
Who said anything about giving up?
(A collection of one shots, and requests are welcome)
(...I make no guarantees they'll happen though...)
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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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Pacifism Cannot Break Barriers by Sage_Against_the_Machine
Fandoms: Undertale (Video Game), Deltarune (Video Game)
29 Jul 2025
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“How do you hold a psychopath?”
“…with both hands. Because someone did that for me when I thought I was the monster.”
Frisk has done it—gotten to the end, gathered the souls, spared everyone… Yet, the barrier stands strong. Madness ensues when humans start falling down to the Underground again… and the true enemy manifests in the form of a glitch between worlds.
Chara is back. Papyrus has a gay awakening. You take the role of the player. Asriel reconnects with his feelings. Sans reconnects, in general.
(Kind of my thoughts on all three endings mixed together. A little AU-y, especially with Chara's story. May not be 100% accurate to the series, some bits may be cringe taken seriously, others may be out of character, but that's fine. Headcanon: Paps is 18-24, Sans is 26-30.)
- Language:
- English
- Words:
- 1,411
- Chapters:
- 1/?
- Kudos:
- 3
- Hits:
- 29
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Head Over Heels (process of being rewritten) by Sl1mShadyNeptume
Fandoms: Undertale (Video Game)
29 Jul 2025
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For as long as you could remember, you’ve been scared of your secondary gender. Especially when you started getting older and started to realize how against you the world was.
How you expected only to be an Alpha’s omega…and that’s all you were supposed to be…not even your own person…you didn’t like that!!
Because of this, you’ve made a promise to try and avoid relationships, live life for yourself and just try to stay safe without help from an Alpha.
It was going good until you were slammed up against shelf in the grocery store by a Skeleton that would claim to be your Alpha. Since then, Your life has spiraled down and you are doing everything you can to keep calm while a giant skeleton follows you around like a puppy.
Good luck dealing with Monsters who hate you, Alpha’s who want you for then wrong reasons, A human who saved a race of people wanting you too be their older sibling, A annoying roommate , your ‘Alpha's’ brothers trying to kill you for being human and Said Alpha being the worst himbo!
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One of the last things you were ever expecting to happen to you after you died was to wake up in the body of a skeleton.
The same skeleton that you’ve been obsessed with since high school.
The biggest issue is that it's the horny Edition.
All you got to survive is a smell of burnt apple pie, Your few memories of Underlust, and a will to survive for long enough to escape horny jail.
Let's see where this takes you.
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“The sixth stirs.”
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Monsters are free, and Frisk is safe and sound at home.
It feels like fairy tales are real, though a rough break-up after eight years of marriage quickly sobers that thinking.
With the break-up follows a proposal straight out of a steamy novel: share a room with a man you've just met, while you get back on your feet and work on the process of finding a new place to move into.
Turns out, the guy who smells like grease and beer from how often he visits Grillby's is a lot less romantic than you would think.
And it's precisely living together what gets you to know all the icky things about him.
Until you end up falling for him with each nice little thing he does, and suddenly...
It feels like all those icky things start to matter less and less.
More so, when things take a sharp turn and you're in the middle of a gang fight, helping him however you can despite not knowing what you're signing up for.
Overlooking details like bloody clothing, chipped teeth, and reports of missing people on the telly make seeing him drinking straight from the milk carton a much more tolerable offense.
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Their King is dead. The six Souls are Gone. Their future lays in ruin.
Frisk has slipped through the barrier and left the monsters with shattered hopes and a toppled monarchy. With no witnesses, it was pure, selfish regicide. They were loved by all, and thus, their betrayal cut all the deeper. For the third and final time, humans had stolen everything from them.
Anger has a way of changing people. It remains in the Soul even as memories fade.
Frisk may be gone, but the RESETS continue, multiplying the resentment within them and morphing the residents of the Underground into tightly wound reflections of their former selves. No longer in a position to do nothing, Sans is Determined to find a way past the barrier for the sake of his brother, and for the sake of vengeance.
He’ll give anything to achieve that goal. His Soul included.
He’d found an alternate method that should work, buried deep inside a gilded dusty tome in the royal library. Instead of using LoVe to pass through the barrier, Sans was going to use love. He was going to have to gain a consenting human, and convince her to bind her Soul to his. Permanently.
Series
- Part 4 of The Butterfly Effect 💚💛🧡💜💙🩵❤️
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You ran away. You couldn't face your dark past, it was to much for you. You moved to Ebott City to start a new life. Swearing off friends and relationships all together. Or so you thought...Two skeleton brothers move in next to you. You can't help but be drawn into the shorter of the two. Will you let him in to help you with your haunting past? or will you run again when your past catches up to you
Updates on Sundays/Mondays!
A short break every 5 chapters :)
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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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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.
(Sans x reader - however, reader is basically an OC with a name and backstory)
I do not use beta so understand grammar, spelling, etc finna get funky -
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my lame attempt at an anti harem fic
So what if you had a crush on Blue? What if he invited you to his party? and instead of him taking you there you meet his Edgy-looking cousin Red?
Red is right now dealing with his cousins giving him shit for things he didn't do. He has one bitch to thank for that...Tiffany
Will these two opposites be what they need? (the answer is yes)