Undertaleaus Stories

1.2K Stories

Reborn as Error by Kiwi_Seal
#1
Reborn as Errorby Kiwi_Seal
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...
Reincarnated as a Voice by IHamTiredAndBored
#2
Reincarnated as a Voiceby TiredAndBored
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...
Lost Soul by CatOppp
#3
Lost Soulby Cat
Sans doesn't remember a time when he had his own name. He always wakes up as a Sans, but everything else is constantly changing. He is an observer meant to simply watch...
I'm...swap gaster? by KarmaAkabane425
#4
I'm...swap gaster?by Karma Akabane
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...
Reborn as Classic Sans but different (rewrite) by SarahWingDing
#5
Reborn as Classic Sans but differe...by Sarah WingDing
A 31 year old female died and reincarnated as Classic Sans. The multiverse is fighting.Will she join the fight does she know the truth?
Naturetale : reborn as lavender  by KarmaAkabane425
#6
Naturetale : reborn as lavender by Karma Akabane
(As far as I know, no one has made a story about naturetale like this so..and the only reason why I writing one like this is because of fatal error part 5? Or part 4, go...
Suffocating Joy {Nightmare x Reader} by Haru_Writes_0
#7
Suffocating Joy {Nightmare x Reade...by Haru
(Y/N) loved horror stories- true crime, creepy-pastas, urban legends. You name it, they liked it. When a walking nightmare (pun intended) showed itself to the young huma...
We Are A Family (Multiversal FGOD Error Fanfic) by Sarah_Skelecat
#8
We Are A Family (Multiversal FGOD...by Sarah_Skelecat
This picture does not belong to me, it belongs to Iyoth737 on deviantart. This is inspired by @harrish6 and their "Falling Into A Different Destiny" NaJ story...
𖤐⏤͟͟͞͞A Guardians' Mother⏤͟͟͞͞☆ (Sans Au x Single!mother!reader)  by A_tired_artist
#9
𖤐⏤͟͟͞͞A Guardians' Mother⏤͟͟͞͞☆ (...by A_tired_artist
She didn't really expected this, just a few seconds ago she was protecting her kids and now she's staring at a bunch of skeletons and a human with two of them looking a...
Becoming a creator from undertale aus by KarmaAkabane425
#10
Becoming a creator from undertale...by Karma Akabane
What if..someone from our world died and became a creator that was everywhere and nowhere at the same time? What if that someone..became dust sans friend before he joine...
A Killer Life by FewCafe
#11
A Killer Lifeby nok_nok
adopted story. original by @Mijunaa :3 - The afterlife of a dead human that reincarnated into a Killer!Sans variant. The facade of the new owner of the body, could he k...
Bad Sans Poly Yaoi/lemons by Glitch3d711
#12
Bad Sans Poly Yaoi/lemonsby YaBoi
💜Includes💜 ------------------- -BDSM -Threesomes/Orgys -Tentacles -Knife play -Pain kinks -Degrading/Prase -Cross's existence -Error's existence
His Lullaby by AqilahDaWinterWolf
#13
His Lullabyby Creator of Sans Creations
𝐁𝐞𝐟𝐨𝐫𝐞 𝐭𝐡𝐞 𝐀𝐩𝐩𝐥𝐞 𝐢𝐧𝐜𝐢𝐝𝐞𝐧𝐭, 𝐃𝐫𝐞𝐚𝐦 𝐦𝐚𝐝𝐞 𝐚 𝐥𝐮𝐥𝐥𝐚𝐛𝐲, 𝐚 𝐬𝐚𝐝 𝐥𝐮𝐥𝐥𝐚𝐛𝐲 𝐭𝐡𝐚𝐭 𝐰𝐢𝐥𝐥 𝐬𝐭𝐮𝐜𝐤 𝐬𝐨𝐦𝐞𝐨𝐧𝐞'𝐬 𝐡𝐞𝐚𝐝...
"Not Quite Determined" Sans x Human/Monster Reader [COMPLETED] by FloweyTheGrouch
#14
"Not Quite Determined" Sans x Huma...by AsrielAs Flowey
You've lived your life without ever knowing your parents. Despite that you dream big because you don't have much; aiming to become a famous singer and prove anyone who h...
Florist Merchants Journey - Melati!sans by azfiruz
#15
Florist Merchants Journey - Melati...by FIRUZ
Slice of life and adventures with Melati!sans and his loyal companion Jasmine, together they will travel across the Multiverse as traveling Merchants. what will they fi...
A Burst of SuperNova by Nanachi8
#16
A Burst of SuperNovaby Nanachi
A change can lead to a new outcome, some worse than others or better than expected. When one's curiosity leads to a new life, do you accept the change or destroy it fro...
Reincarnated as sans from Inclinetale by UmbraM4un
#17
Reincarnated as sans from Inclinet...by UmbraM4un
I got reincarnated into an Undertale Au that I made called Inclinetale ... Yup that's it, oh and I guess I have a twin now.
The Soulmate AU by -Horror_Sans-
#18
The Soulmate AUby Horror
Undertale aus x reader Featuring (in order): Nightmare Error Dream Ink Cross Dust Killer Blue Horror The Soulmate Au is where everyone that comes or lives there will hav...
An Error's Doll by EroseWisp
#19
An Error's Dollby EroseWisp
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...
Enemy's to lovers by Xai0v8
#20
Enemy's to loversby Xai0v8
This is a spicy errorink story If you don't like this ship pls DONT read or send hate thank you I will be doing more of these