Undertale (Completed) - Chi No Bara - Wattpad

Undertale (Completed)

Reads 1,966
Votes 27
Parts 3
Time 19m

Reads 1,966
Votes 27
Parts 3
Time 19m

alphys babybones fanfiction fantasy monsters mother papyrus reader sad sadoneshot sans shortstory toriel undertake undertalexreader undyne xreader

You were a nice monster and you took care of skeleton brothers because their father was a royal scientist so he didn't have a time to do that and their real mother died but you took care of all child monsters. What happens when Gaster gets killed by a human? Will you survive? Or will you die?(CC) Attribution-NoDerivs

alphys babybones fanfiction fantasy monsters mother papyrus reader sad sadoneshot sans shortstory toriel undertake undertalexreader undyne xreader

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Blown Through The Rift (Gaster!Sans X Reader) by BanthaBug

You were working with Alphys in the lab in Undertale when chaos strikes! In a freak accident, concentrated determination is mixed with an unnamed concoction and blow you through a dimensional rift. When you reawake, you find yourself in what seems to be the beginning of Undertale once again. Upset but not overly surprised, you make your way back to Alphys's lab... Only to find her lab assistant is no longer you! Working with Alphys now is a tall, punkish skeleton with two cracks in his skull and a snarky attitude. As they help you find your way home, will you find more than that? *I DO NOT OWN UNDERTALE OR GASTERTALE!!! I WISH I DID BUT I DO NOT! THIS IS JUST A FANFICTION!!*

Undertale X Reader by Cat_Maipie

Let's get to the point shall we? So let's look at the list here... You're a... no information? Hm, interesting i guess, I'll have to base it off my observation. Whatever, you're a human, well kind of. You're a human and a monster at the same time, more like in between. Let's say... player? Better than nothing i guess. You're your own person. Sometimes you control frisk, sometimes you don't. You can also move through timelines, and also universes but that may be too risky huh? You'll find more about it soon... THIS CONTAINS VIOLENCE PLEASE BE WARNED! Lemons? Maybe. - #57 in sans 12/14/25 - #1 in floweyxreader 01/10/25 *** COVER : Credits to the person who made it GAME : Toby Fox

[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}

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...

I Never Meant by justmaxingoutourplot

I never meant to fall in love. I never meant to have children. I never meant to become involved in a war. I never meant to lose people I love. I never meant to let us be thrown down here. I never meant to become the royal scientist. I never meant to do lots of things in life. But I always meant to live.

Darkness' Eternal Bride (Gaster x Reader) by xsfolia

WARNING: THIS CONTAINS HIGHLY MATURE CONTENT (BLOOD, VIOLENCE) READ AT YOUR OWN RISK Money can change a lot of things. It can even change your destiny. Plunge yourself into a life of romance, science, disappearance and misunderstanding. ________________ "When you get better, I'd like to kiss you" ... Gaster only wanted to conduct an experiment. He surely didn't want his life to be taken over by weird feelings. He also wanted the only thing he couldn't really have. He wanted you. What will he obtain? Will his research finally be completed? Or will he have to start another one? As for you, will you be able to move on from the past? Words count: 81.390 Also contains mentions of nsfw [Rankings: #1 in #gaster (08/21/2022), #5 in #xreader (08/21/2022)]

The Faults in Our Souls ~ Gaster x Reader (Under editing) by _T3chn0_

"Do you not want to go back home? To the surface?" °°°°°°°°°°°°°°°° "No." °°°°°°°°°°°°°°°° "Why?" °°°°°°°°°°°°°°°° "Because my home is right here, sitting next to me." _______________________ You were used to the unfortunates of life. Everyone had them, it was normal, but life decided to take a lemon, freeze it, then throw it at your face. But, it wasn't like it was THAT bad... Until you fell into the Underground that'd been sealed for over a hundred years, of course. Friends along the way help you through the sudden changes in your life, and a bone-ified family as well. (82,110 words) (Undertale does not belong to me, only the characters I added for plot reasonings. You belong to yourself, of course.)

[Sansxreader] A Whole New World *UNDERREVISION* by Mousington

UNDER REVISION (Check out Memories!) BTW- Sans is human in this. The story will explain. He has a sister named Chelsea and he is your "cousin".This story contains legal age drinking, a hint of suicide and might have a lemon if I decide to write one. Idek (Future me here, fyi- I'm not writing a lemon EVER in my defense I didn't know what they were but my friend said to put that soooo....) [^well variety IS the spice of life soooo };) I might...] ENJOY

Knock Knock {A Sans X Reader - Undertale} by LittleFluffyAlpaca

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?

Sans got sick oh nu by CutieEevee1

Sans has gotten sick, OH NO! So what happens when our funny pun loving skeleton gets sick? Hurt/comfort, Fluff, and lots of overprotective family moments with a side of Horror????? Kind of... ish. The story takes place in a SORT OF HC version of the UT Cast, but enough to allow readers of all kinds to enjoy a good story! Shipping will only be for cannon ships (if you allow Asgore x Toriel XD). Also DADSTER. LOTS OF DADSTER. WE LOVE DADSTER. You might find some rarely spoken characters make an appearance here too ;3 Please enjoy!

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Slide 1 of 10

Blown Through The Rift (Gaster!Sans X Reader) cover

Undertale X Reader cover

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

Broken Souls cover

I Never Meant cover

Darkness' Eternal Bride (Gaster x Reader) cover

The Faults in Our Souls ~ Gaster x Reader (Under editing) cover

[Sansxreader] A Whole New World *UNDERREVISION* cover

Knock Knock {A Sans X Reader - Undertale} cover

Sans got sick oh nu cover

Blown Through The Rift (Gaster!Sans X Reader)

You were working with Alphys in the lab in Undertale when chaos strikes! In a freak accident, concentrated determination is mixed with an unnamed concoction and blow you through a dimensional rift. When you reawake, you find yourself in what seems to be the beginning of Undertale once again. Upset but not overly surprised, you make your way back to Alphys's lab... Only to find her lab assistant is no longer you! Working with Alphys now is a tall, punkish skeleton with two cracks in his skull and a snarky attitude. As they help you find your way home, will you find more than that? I DO NOT OWN UNDERTALE OR GASTERTALE!!! I WISH I DID BUT I DO NOT! THIS IS JUST A FANFICTION!!