Undertale AUs x Reader
135 stories
Knock Knock {A Sans X Reader - Undertale} by LittleFluffyAlpaca
LittleFluffyAlpaca
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You were always a curious child. One day, your curiosity took you too far. You lived not to far from a mountain, MT. Ebott, and always wanted to see what was on the top. Your parents had told you stories about the mountain and you had always wanted to see if they were true, being the naïve child you were. One day, you reached the top after a while of climbing. You looked around, not realising where you were walking and fell into a gaping black hole. You woke up to a soft voice of a goat-like monster who, ever since that moment, took care of you and loved you. She taught you magic and all sorts of recipes. Everything she knew and you loved it. But what happens when you grow up more?
An Old Friend ' Underfell Sans x Reader ' by Sillychick120
Sillychick120
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You and Sans had been friends since you were little, when the monsters had to leave, you were really upset that your only friend, Red as you called him, had to leave. Will he remember you after 7 years of being in the underground? Or will he just forget about you? To find out, read 'An Old Friend' Underfell Sans x Reader.
Discordance In The Balance (Nightmare and Dream x Corrupted! Reader) by Mysteriousghost102
Mysteriousghost102
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After becoming friends with none other than the guardians of the tree of feelings, you realize more things are going on than the guardians care to reveal. After attempting to help them you end up corrupted and your friends trapped in stone for 500 years. . . Currently rewriting!! This is a sans x reader fanfic so don't like don't read. Reader is gender neutral and there is 18+ stuff in this book so please keep scrolling if you're under 18! So minors please avoid this like the plague There will be warnings at the beginning of chapters, if there's something I should put a warning for please tell me. Y/N = your name F/C = favorite color See anything else to put ill put it here /|\ ---WARNING--- This is mainly for fun and ideas put together from what my brain spews so continuity errors may happen and i will try to fix them accordingly. Again this is just for fun and nothing is really planned just improv to be honest. Still hope you enjoy! The cover was made by me
Prisoner...? (Bad Sanses x Human!Reader) by ShadowOfFandoms10
ShadowOfFandoms10
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Y/N was a human from a brand new AU...which was practically nothing. They were eventually rescued by the Star Sanses...only to be taken prisoner by the Bad Sanses. What will happen? How would they escape...if they willingly want to? This story was originally posted on Quotev! It will always be updated first there, then here. #1 in #sanses 7/1/21 #1 in #badsanses 10/25/21 #3 in #errorsans 5/9/22 #4 in #inksans 5/9/22 #1 in #killersans 6/15/22
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!!})
The Key To Freedom by Krembell
Krembell
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You loved your husband, you did but... he changed, as quickly as a flip of a light switch the moment you had married him. Now you were stuck in a new house, lost your job, left your friends and family behind for your husband's new job and he got increasingly more demanding of you. Sometimes you wish you could just escape to another world, not just the one inside your mind. Wait... what was that...? Has that door always been there? "OH HELLO Y/N!" "How do you-? Who are you?" "YOUR OTHER HUSBAND OF COURSE!" What?
An Oath of Mercy || UnderFell Sans x Reader by StrawberryMilkSnake
StrawberryMilkSnake
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One clumsy moment and a broken leg are all it takes to leave you at the mercy of the very edgy and very hostile monsters of the underground. Thanks to your knowledge as a doctor (and oath to do no harm), you're able to convince the Great and Terrible Papyrus to keep you alive. But how are you going to find your way back to the surface with a bum leg and a short skeleton that doesn't seem to like you? | - UnderFell Sans x Human Reader - Enemies to lovers but Fell is the only one hating - Your leg privileges are revoked, and Fell needs to wash his mouth with soap - Flowey is an equippable companion and decides to help you cuz he actually gets something out of it - My own interpretation of UnderFell (tho from what I've seen it doesn't really have a narrative anyway)
Furtastic by Juniperlives43
Juniperlives43
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A girl who has never seen the world outside of the lab sees it for the first time only to fall down into the underground. What will she find down there?
Depressing Daze (Bitty!sanses x Reader) by TheFriskDuo
TheFriskDuo
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Hello! This story contains Blood, suicide thoughts (And maybe attemps), and maybe swearing. If you are uncomfortable with this then just leave. This story is not well written and has many errors i apologize for that. I write all of this straight from the mind and have no clue what im actually trying to do with this story. ART IS NOT MINE!! Story was made by Neko!Frisk. (one of the two people who own this account) (I helped! -Flower!Frisk) (Yes you did and it's very appreciated -Neko!Frisk)
Nightmare sans x Female reader by Wolfie-nighter
Wolfie-nighter
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Y/n had a normal life before everything happened to her a good childhood until she turned 15 and then her mom and dad died coming home take a adventure as y/n survival of school bullies and work and a shadow creature wait WHAT find out more in Nightmare sans x reader but be careful they might become Yandere for you Please don't delete this book if you see a mistake please just translate it if there's no mistake please leave the book alone my first book might be Yandere nightmare book I don't know yet nightmare sans is Corporation in this book None of characters belong to me expect y/n