Undertale & Undertale AUs
15 stories
Cryophobia - (Sans x Reader) by trainerblueoak
trainerblueoak
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Next person to comment on this monstrosity gets fucking vored!! × ❝You made your choice a long time ago.❞
Your Life?! (UF!Sans X Reader) by Pandorwini
Pandorwini
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WARNING: Lots of swearing, blood, cruelty and slight sexual themes!!!! Sans and Y/n are arch enemies. They can't go a second without insulting the other. But one day an...accident happens, forcing them to co operate until they find a sulotion to their "situation". But before that, they learn a lot about each other and maybe, the hate they held for each other, will transform into something more...something beautiful
To Love A Demon (Gaster!Sans X Reader) by vicious-pretzel
vicious-pretzel
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*Do you fear me? "N-No" *Are you sure? "Yes." *You will learn to fear me Heh. Well here we are! I hope you enjoy this sin. I'm going to take my time and let you learn to love the characters slowly. So if you're the ones who like lemon in the first chapter, this is not for you. *Don't worry sweetheart. It will be worth it. (I don't take credit for any of the art)
Ungrateful (Geno!Sans x Reader) by BubbleBerryUniverse
BubbleBerryUniverse
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account inactive. you can find me on @Mini_Crushies
A dream come true? (Nightmare!sans x Reader) by Determined_Reader
Determined_Reader
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Your life is miserable. Lets just put it at that. Your parents died at the age of 3, your foster parents abuse you, you are ridiculed at school, and to top it off no matter what you cant get these damn nightmares to go away. So..... You end up at the large apple tree on the hill, just before 'they' get home too. You sit down with the rope in your hand... And make a wish.... You get up to put the rope on the tree, and in turn, you on the rope. But... 'He' stops you.. It seems your wish has been granted. By the wrong guy?? ({TRIGGER WARNING BTW!!})
Broken Soul {Ink!Sans x Depressed!Reader} by Trixbyte0
Trixbyte0
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| Some people don't change |
Corrupted Timeline: UF!Sans X Reader by xXDiabolicEnigmaXx
xXDiabolicEnigmaXx
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While hiking with your family at Mt.Ebott, you end up falling down a hole in another world where you encounter monsters who want to kill you. Will you be able to change their hearts and bring back hope? Or will you be killed trying?
<DISCONTINUED> H E A R T  A T T A CK [Underfell Sans x Reader] by areyouatrap
areyouatrap
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You wake up on a bed of red flowers.As you find a yellow flower with a face standing in front of you.He warns you about TORIEL who wants to capture a human soul.But...it's too late.As she drags you to her home,you escape down a long black hallway.A skeleton called Sans captures you and locks you in his brother's shed. He helps you escape and make your way to the castle.