Undertale Stories

What if someone is reborn as Error? What if they aren't so bad? What if they're suffering in silence and keeping their job a secret for fear of hate? How will Ink react...

#1 of 61.7k tagged with Undertale 12/06/24 After drowning as a human, Ashe reawakens as a DustTale variant of Sans. With his ghost Papy helping keep him from falling int...

Just what you'd expect. Pardon my lack of knowledge about this AU. I just like the concept. Both Frisk and Chara are girls. Characters may use absolutely differen...

Fresh is Admin of the Multiverse!? This can't end well ... or can it? This is an alternate universe - er, multiverse - where Fresh is responsible for the monitoring and...

??? was a fan of undertale heavily but when she suddenly got hit with a truck (because everyone dies from trucks when they get isekaied.)she was expecting to be dead so...

What if someone from our world died knowing a lot from the undertale and their multiverse/underverse? What if that person also knew about the balance and didn't creat to...

You didn't have a bucket list or anything, but you wished you could've at least read a few more fanfics or done literally anything fun before dying. Oh well, at least yo...

TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other peop...

⪼Beaten up and betrayed, {Name} dies an unfair death because of their best friend. Having their life and their brothers whisked away in a flash. ≫They find that they inh...

You are walking along a dark alleyway when you are ambushed and knocked out. In another universe, a young Sans is attacked and you both wake up in a white space with an...

Something I've been thinking about making for a while now. I hope you guys can enjoy it! (Warning! Themes of suicide and depression are in here as well! If any of that b...

I've seen some Undertale fanfictions where readers and original characters are sucked from our reality and transported in to the reality of Undertale and it's several au...

Bitty! US pap x reader x Bitty! US sans Our two little bitties have been through a lot, so what happens when they meet a human that's hurting just as much as they are...

Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapp...

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...

I was just a 19 year old, living my mundane life, until I died... and was REINCARNATED!? And not only that, I was reborn in the famous videogame release in 2015 Undertal...

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'...

Undertale is going to react. This will not be entirely canon and will include aspects of what I believe (backstories, ect.) I do not own the cover and I do not own any o...

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

(TW: unaliving thoughts and memories at the beginning. It gets better over time, don't worry! Trauma is difficult to overcome...) You didn't want a second chance. You...