Undertale+AU's
92 stories
Little Lyrebird(G!Sans x Reader) [DISCONTINUED] by xXDiabolicEnigmaXx
xXDiabolicEnigmaXx
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    Parts 35
He created me to become the people's art. But he has only created the perfect weapon. (Cover drawing is not mine)
Hold Still GXReader by EternalKimFlame
EternalKimFlame
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    Parts 45
I walked along the street. Everything was perfectly normal. The sun was warm, a soft breeze swept through my short (h/c) hair. Then the sound of glass shattering reached my ears making me jump. A bit frightened I backed away from the sound when something wrapped around my waist and I suddenly felt like someone was spinning me through the air. My feet hit carpet before I was tossed on a couch. "Move and you'll get your little neck snapped."
Au Sans x Reader Oneshots by Jaethefallenhuman
Jaethefallenhuman
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    Parts 36
Alternate Universe Sans x Reader Oneshots! ~ ~ (Requests accepted!) Highest rankings (08/11/2018) #1 Gastersansxreader #4 Gastersans #1 Mobtale #1 Sciencetale #2 Littletale
Matchmaking: Gaster Sans X Reader by I_Cannot_Life
I_Cannot_Life
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    Parts 3
It was a simple project for your programming class- to make a matchmaking app. Only catch, everyone's partnered with the opposite gender, so each gender gets input on the app. And it's even worse when you get partnered with a flirty skeleton.
I Can Hear You. [Sans x reader] by MelodyofChaos
MelodyofChaos
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    Parts 3
This is a collection of chapters from my [Sans x reader] fanfic, Can You Hear Me? but from Sans perspective. Before reading this, I suggest you take a look at the main story, as this one will be based on the votes I get for the different chapters and probably won't make sense otherwise. It's been a few years since the barrier was finally broken by a human named Frisk, finally releasing the monsters back to the surface. They were all settling down well, finding jobs, learning about the surfaces history, and integrating themselves in the new culture that had started since their appearance. That's what most monsters were doing, anyway. Sans was a different story. Though he was happy everything had worked out in the end, and that the monsters were back on the surface, he was having trouble finding anything that really interested him up there. But that suited him fine, he thought, as long as everyone else was happy. That is, until he met (y/n). By some chance, Mettaton had been working with the rising star (y/n) Heir, and by another coincidence, dragged her along to one of the get togethers the gang had at Papyrus' house. That's the night everything changed for the group of friends that rallied around Frisk, and, that's also the night things got a lot more interesting for Sans on the surface. (Disclaimer on the cover: this is simply how I, the author, imagine (y/n) Heir. When I draw her, this is simply the design I use. Feel free to imagine her however you like, as this is a Sans x reader)
LOVE Madness (DT!Sans x Reader) by xXDiabolicEnigmaXx
xXDiabolicEnigmaXx
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Deep underground, a child is on their way to a genocide route. Sans comes to a conclusion where he needs more LOVE in order to defeat Chara. He becomes corrupted and slaughters every monster in the Underground. How will you save him now? (This art belongs to it's rightful owner)
 Horror of Our Love  by OmenTeller
OmenTeller
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    Parts 5
This is basically going to be a story about Horror Sans and well, you the reader. Yes, there will probably be gore, since this is Horrortale Sans and all. Also, basically my reason for making this is I wanted to try writing a story on here and my friend picked him. The summary is; What had happened? The last you'd known of.. You'd been but a small child, barely able to walk when you'd been taken. Taken where? By monsters. It had been something of a slave trade, something weird and.. Wrong. You were taught to kill in that place, both monsters and your own kind.. Only the strongest were actually 'sold'. But why was this? You soin found out, when you'd found yourself bought by none other then one of the most horrifying monster's you'd come across. His grin spoke of dark promises and really.. In a situation like this, could you afford to not listen? But will listening be enough for you to survive? Will you have to use the skills you'd learned in that awful place? We'll just have to see.
I Love U, I Hate U (Underfell Sans X Reader) by catfishhamsterlady
catfishhamsterlady
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    Parts 8
*Coming Soon!*
{Broken Already} Gaster Sans x Reader by _Kochii_
_Kochii_
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    Parts 25
"That's how I ended up here." "Seems bad." "Oh no, it was hell."
Pure Soul (Gaster!Sans x Reader) by ToastieSocks69
ToastieSocks69
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You have a small secret that no one knows about. You are the only pure soul human that anyone has ever met. You keep the soul a secret from everyone. That is, until a certain skeleton decides to come... ... And one thing is for certain... He wants your soul. But he also wants you.