Undertale Stories

Aster Corvus Concord, now known as Sans Serif Gaster, was living a relatively peaceful life having reached the surface. Then it all reset. Now, after living through an e...

Cover image made by me. Someone meets their end too soon and meets someone who gives them another chance to live a more fulfilling life. One that they would enjoy despit...

Sans has gotten himself stuck in the void between worlds in a successful attempt to stop the resets of his timeline. He's not sure how long he's been chillin' alone ther...

What if someone from our world became dream on the first day they were made and were determined to not lose their brother to corruption like the original dream did in th...

What if someone in our world becomes fresh sans? --- Story Status: [✴️Ongoing] |⚪Unedited⚫| ｡☆✼★━━━━━━━━━━━━★✼☆｡ Impressive Ranking: #128 out of 47.9k - Undertale | ⊙.☉ ...

Since there's not enough x bitty reader stories out there. You are a stray bitty who ran away from your last abusive owner and run into someone who will change your...

Somehow...I've become a sans...and not just any sans.. I'm classic!? What the flip is going on!? Wait why are different sans and papyrus's showing up at my home? I didn'...

What if sans the funny skeleton was transported to Re:Zero? this fanfic answers that question, what will Sans do? how will he adapt to this new world? We'll just have to...

So harem book of Charas and Frisks x male reader but real description is below this. The only one of his person in all universes is part of Undertale with an OP powers b...

The Undertale Genocide Route is happening, but a new card has joined the deck: Finn, a quiet kid with a love for stuffed animals who falls into the Underground soon afte...

Y/N Collimore, a deceased mage that now haunts her family's manor must now deal with a group of skeletal intruders as she unlocks more of her forgotten past. Only thing...

What if there was a multiverse where Error and Ink were friends? What if the voices were the creators? What if they went to the Fgod multiverse because the voices were b...

Yeah sorry gained an idea on if someone became swap Gaster Also they may be apathetic or just confused on their feelings and MAYBE Autistic, I may be a bit wrong on ap...

Sans is brought to the world of BNHA. He wakes on the roof of UA.He'll meet new friends and enemies, old and new. But will he ever get over the jar, filled with his bro...

It has been 10 years since monster broke free from the barrier, since then monsters, and humans live together in peace. But for some reason monsters have some how got a...

"Hm?" Timer asks taking his wrist watch off, checking the time before taking out a screwdriver and pulling it apart. Nervous habit of his. The meeting between...

Well to start off, I'm just a teenager and I died in my sleep and was reborn as a skeleton, who is supposed to be error sans mom?...*stares at the cute bundle of cutenes...

You are a doctor in the emergency department living in the city of Mount Ebott. You live with two magical skeleton who defy any type of logic and have a sleeping schedul...

This will be similar to Undertale AU Oneshots only: They're your siblings! Yep, cute, edgy, or anything else! Feel free to request!(Requests are closed at the moment) No...

[AU Sans x Reader] (Subject to change!!) (Mostly bad sanses cause their funny to write lol) !!COVER BY @wrightcember THE BELOVED<33!! GO CHECK THEM OUT RN >:( //Re...