Orange Broken Bonesby FlamingArrowShipper
(There may be some Undertale or other AU shippings in this story so let me know or comment what ship you wish to be included, thx! There might also be some sensitive thi...
Reborn as killer sans but I'm preg...by Rie_rose
The reader has died and has been reborn as a killer sans but pregnant
He has to learn how to use his powers and learn about himself first
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A Whisper Turns Into An Echoby KillMehPlease404
Echo had a plan. A really good one. Free Monster kind from the spell casted by humans. Find her sibling who disappeared. Then undo the curse placed on her. But when she...
Date A Skele-ton of Skeletonsby KillMehPlease404
Spirits are a secret to the public, who take shelter during the Spacequakes they cause. There are two methods of dealing with the Spirits:
Kill on sight.
Take them on...
Something Newby KillMehPlease404
You needed a new life for yourself.
So you move away from home and try your hand at a new city. Armed only with your things you brought and your partner in crime, Sherif...
Unpredictable Way to Love you :)by BluePaper FaceSky
(this is Sans Aus and Papyrus Aus x Male!reader fanfic , pls don't say anything weird about it as this is for my own entertainment -)
(Also I take the tags from my AO3 s...
NationVerseby UbaLala9
An Undertale Multiverse I'm working on.
AUs are various nations around a fantasy world with various continents and islands.
This will include various oneshots about the...
『𝐀 𝐆𝐮𝐚𝐫𝐝𝐢𝐚𝐧𝐬' 𝐌𝐨𝐭𝐡𝐞...by A_tired_artist
All she wanted to do was to settle down a bit with her children and live peacefully....
...So why the hell did these skeletons and this woman appear in front of their h...
Fictober 2024by Readern111
A collection of fluff and angst!
Fandom: Undertale (UTMV)
The prompts are from @fictober-event over on tumblr. Cover art does not belong to me! It will be taken down if...
Completed
Becoming papyrus from underswap by Karma Akabane
What if someone became papyrus from underswap? What if they gave their brother more freedom? What if they were the one that error kidnapped instead of sans?
(Things wil...
Becoming the multiverse from under...by Karma Akabane
What if someone from our world became the multiverse?
Well everything is not likely to stay the same at all..
(Things will be different even possible personalities or a...
When Worlds come togetherby psycho teddy
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...
You Can Never Go Homeby MiniFighter
Your world. No. Your universe was about to be destroyed. As much as you didn't want to leave, you couldn't let him take over. So you did the only thing you could think o...
Swap fell Papyrus x Half Monster H...by Kit the Kat
You are sorta the Swap Fells' sister. Sans forces you to wear a cat ear headband and calls you Kitten while Papyrus treats you like a normal person ( except for when he'...
undertale aus x Mike (oc)by mike
an outbreak has accured, but.. it has affected the skeletons differently.
Itty Bitty Loveby Naomi Gonzalez
(Cover Done By Me)
Y/N is a very successful woman, who is the top surgeon in her job and has a family loan that is given to her every month. But even with her riches and...
// Spark //by suna
A human. That's what you are. Or, should you say were? Your skeletal palms beg to differ. No time to think, you've got a little baby brother to protect.
This new world i...
Kingdoms(multi ship AU)by UbaLala9
(I have to rewrite the first bits I had because wattpad glitched!) Kingdom AU, merge AU, mystic creatures, people meet and fall in love
Genderverse Loreby Derek O. Gast
includes - All Aus (so far)
- Journals (from characters)
- Character lore (By creator [There may be multiple of an AU character])
- Pictures for lore
- Videos for lore (...
Completed
Undertale AU X Reader Oneshotsby Indie
Here is a collection of oneshots I write in between my other stories to practice some character's personalities. I will not be taking requests and there won't be any spe...