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(DISCONTINUED) Where Were You? (UnderTaleXFNAF) (SansXReader)

Reads 204
Votes 2
Parts 6
Time 1h 23m

Reads 204
Votes 2
Parts 6
Time 1h 23m

Mature

fanfiction fnaf undertale

You are (Y/N), a tortured/abused girl who ran away from home bearing a terrifying secret. After falling into the King's Castle, you meet Sans, Papyrus, and their father W. D. Gaster. One year after staying with them, you suddenly disappear. Will you ever get to see your 'family' again, or will you fall under the influence of your terrifying 'secret'?All Rights Reserved

fanfiction fnaf undertale

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6 parts

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Bloodfall (An Undertale AU) by BlackStormWolf

Ever since the death of his younger brother. Things have gone downhill in the surface world for Sans. Alphys died a few months after Papyrus to a disease, Mettaton and Undyne, especially Undyne, had fallen into a depression. Flowey dissapeared into mt. Ebott, not to be found and Sans is fighting depression and insanity. One day, Sans discovers a suspect to his brother's death. A being that is trapping anyone who had either fallen into Mt. Ebott or stayed behind in snowdin for a while. Sans, along with Frisk and Undyne, go into the underground themselves to confront this being. They must encounter the Bloodfall that traps and kills anyone who dares pass by waterfall. (This takes place after a true pacifist run if one killed Sans in a Genocide run, but reset their game before getting to Asgore(I did this in a way to quit the Genocide route). This is if Frisk choses to do this the Pacifist way. I might make a Genocide one in Story Shorts. Also, My Sans is a human, but feel free to interprate him as a Skeleton if you ever choose to use this AU. Just credit me!)

UF!Papyrus X Reader by xXDiabolicEnigmaXx

After your parents were brutally murdered, you escape up Mt. Ebott, a place where people disappear and never come back..........

Universal Surface Angel by Lithriel

Reader insert. What if W.D Gaster didn't just get split between time and space, but actually ended up in your world in an abandoned hospital you called home? Your were a young child he decided to use as experiments to test human determination in said world and breaks physical laws to test human possibility? He knows of the powers you gained from his experiments... all but one, this one allows you to tear realities just enough to teleport into them. Knowing of Undertale you felt bad for the monsters stuck below in their world and wish to help them, but something goes wrong and you end up going to certain AUs and helping them, gaining the attention of some bad skeletons who now desire your power for them-selfish-selfs.

PATCHWORK SOUL by SparkTheBarkivist

[Complete] When Frisk finished her story, barrier broken and monsters freed, she knew there was still a loose end, but she never expected everything to come unraveled before her eyes. Determined to save the only family she's ever known, Frisk must stitch their lives back together after they are ripped apart at the seams and then attempt the impossible to stop it from ever happening again. [A story like this has been told before, in many different ways by many different people. Even so, I hope you enjoy it. Please know all major canon timelines and the music of Undertale before reading for the best experience.] [An AU of what happens after a specific time kid's True Pacifist ending.]

Corrupted Timeline: UF!Sans X Reader by xXDiabolicEnigmaXx

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?

From Kind to Cold by JimmySMASH4daWIN

Underfell Skelebros backstory! Technically a prequel to my story, "A Three Way SWAP," but you don't need to read that to understand what's going on. Takes place in the world of Underfell. We learn what happened to Papyrus to make him so cold and distant in Underfell. WARNING: MILDLY VIOLENT AND MENTIONS SUICIDE. GETS A LITTLE DARK. YOU'VE BEEN WARNED.

Broken Souls by James_Bond_Pig

Bringing people back into existence doesn't generally have negative repercussions. Not for an entire world at least. So why don't we use the same idea for an all powerful entity and see what happens? Unfortunately, this world might not be up to the challenge. ---- What's this? An Undertale fanfiction? Yes, that's exactly what it is. This takes place after a True Pacifist route so spoilers if you haven't played it (which you totally should, go play now!) Currently being edited...

[HIATUS] Don't Forget [Sans x Female Reader] by GabrielXander

You would think that with how shit your luck is, you would've been dead day one since falling into the Underground filled with scary monsters and a few spooky skeletons. However, much to your surprise, that did not happen (yet). You know how you ended up here, but you don't know... HOW. You're actually in the GAME Undertale now. And to make matters worse, there are some people who KNOW. You're surviving the best you can, but things are only going to get weirder from here on out. Gaster apparently needs your help? You're using the DJ to go to different AU's? You are gay now?- Okay, maybe that last one is just a joke, but still! You can only hope that your instincts are enough to keep you alive in these trenches. On God, they tryin' to drown you in this hoe! {Available on Patreon, Quotev, and Ao3 under GabrielXander}

G!Sans X Reader by NALC2002

/This is a female reader/ Your a girl who lost her parents and siblings since you were thirteen. You grew up by your self with two dogs to keep you company during your struggles. Once you turned eighteen monsters were released from Mt.Ebott and took over the area you lived in. Will you stay in hiding? or Will you show your true identity. (This is slightly a slow burner but to be aware their will be know language or lemons.)

ST☆RDμST ~Lies~ by Silver_Mochaabun

You are an experiment. Made from stars and dust. You can control magic. You are 16 years old. You were determined to search about rumors of Mt. Ebott. You going in into the cave and you fall. You are really Determined.. *ST☆RT* (Covers made by myself)

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Slide 1 of 10

Bloodfall (An Undertale AU) cover

UF!Papyrus X Reader cover

Universal Surface Angel cover

PATCHWORK SOUL cover

Corrupted Timeline: UF!Sans X Reader cover

From Kind to Cold cover

Broken Souls cover

[HIATUS] Don't Forget [Sans x Female Reader] cover

G!Sans X Reader cover

ST☆RDμST ~Lies~ cover

Bloodfall (An Undertale AU)

Ever since the death of his younger brother. Things have gone downhill in the surface world for Sans. Alphys died a few months after Papyrus to a disease, Mettaton and Undyne, especially Undyne, had fallen into a depression. Flowey dissapeared into mt. Ebott, not to be found and Sans is fighting depression and insanity. One day, Sans discovers a suspect to his brother's death. A being that is trapping anyone who had either fallen into Mt. Ebott or stayed behind in snowdin for a while. Sans, along with Frisk and Undyne, go into the underground themselves to confront this being. They must encounter the Bloodfall that traps and kills anyone who dares pass by waterfall. (This takes place after a true pacifist run if one killed Sans in a Genocide run, but reset their game before getting to Asgore(I did this in a way to quit the Genocide route). This is if Frisk choses to do this the Pacifist way. I might make a Genocide one in Story Shorts. Also, My Sans is a human, but feel free to interprate him as a Skeleton if you ever choose to use this AU. Just credit me!)