Undertail (and other AU's)
58 stories
The Queen Of Crime (Mafiatale Sans X Reader) by MysteryMajor005
The Queen Of Crime (Mafiatale Sans X Reader)
MysteryMajor005
  • Reads 68,127
  • Votes 2,517
  • Parts 22
"If you like someone for a reason then you have a crush But if you like someone for no reason then you are in love." Chara and (Y/N) were the Queens Of Crime in the town of Duran. They were the best duo that ever existed, but what happens when (Y/N) runs into a certain monster mafia during a bank robbery and a smiling skeleton takes a liking to her.
|| Catching Feelings || AU Sanses x Reader! || by sydneysayshello
|| Catching Feelings || AU Sanses x Reader! ||
sydneysayshello
  • Reads 103,812
  • Votes 3,654
  • Parts 39
You kind of zoned out for a bit, trying to piece together what they said, when the door opened suddenly. You let out a small shriek as your head slipped and you hit the floor. That's when you saw them. And that's when they saw you ***** Welcome to my story! Warning, there's some cringy writing, especially the first few chapters. Still a work in progress, but I'm so happy you clicked on this, and I really hope you enjoy it!! Top rankings; (May fluctuate with time and not be 100% accurate) #29 in Undertale (what h o w) #29 in sans (again HOW) #3 in underswap (bruh w h a t) #7 in ink (INKY BOI) #7 in underfell (im so confused how am i ranking this high-) #5 in sansxreader (I'm truly honored for my stories to be shown alongside all of those masterpieces-). anyways, thanks for taking the time to read this. enjoy the book!
(Sans x Reader) When Two Souls Meet by ZanaBSparrows
(Sans x Reader) When Two Souls Meet
ZanaBSparrows
  • Reads 958,625
  • Votes 27,545
  • Parts 28
Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister. Please note the the story is primarily on Quotev, so updates to Wattpad may be late, or lag behind that of Quotev. The story also has the potential to become mature. (I haven't decided yet.)
.. The new au .. Sans AU x female AU reader  by sanstrash4life
.. The new au .. Sans AU x female AU reader
sanstrash4life
  • Reads 142,133
  • Votes 3,007
  • Parts 31
Ink has made a new au... Being tale where every one of the aus for a character is in one, for you though. You're sans, but What happens when ink finally lets you meet the other true sans aus which you where made from? And what new power do you have, that the other sans don't, and how will it affect you? Read to find out! Future lemon warning!!!
My Two Masters (UF!Papyrus x Skeleton!Reader) by OreoDaSkeleton
My Two Masters (UF!Papyrus x Skeleton!Reader)
OreoDaSkeleton
  • Reads 93,000
  • Votes 3,987
  • Parts 32
Y/N's been traded and sold her entire life. She's learned firsthand that if you don't obey your master, you get hurt. If you force yourself to listen, you live another day. Monster trafficking is a popular thing down in this chaotic place. That's all she's ever known. Obey. Get a new master. Repeat. ... So why are these two so different? Hello, it's Writer~San!!!! Thanks for checking this story out. Just as a disclaimer, any art/undertale au presented is not mine! However, the story definitely is so enjoy!!!
A Skele-Ton of Problems (Papyrus/Sans AUS x Reader) by PeachiaKeen
A Skele-Ton of Problems (Papyrus/Sans AUS x Reader)
PeachiaKeen
  • Reads 95,622
  • Votes 3,264
  • Parts 31
(DISCONTINUED) It was your normal, average day. You were staying at a friend's place while she was away on some adventure in Europe. Next thing you know, some uninvited guests show up and are unable to leave. Why? Well, who knows? All you know is that you've got to deal with them for as long as they're staying. Having some excitement mixed into your life is good, right?
Just Strumming Along || {Reader x AU! Sans ((and some Papyrus's!)) } by galaxcoffee
Just Strumming Along || {Reader x AU! Sans ((and some Papyrus's!)) }
galaxcoffee
  • Reads 111,598
  • Votes 3,474
  • Parts 24
When (Y/N)'s grandma passes away, she moves in her grandma's beach house in Oahu with her ukulele. But what happens when she plays that ukulele by the sea and a "portal" is created? What happens when VERY similar skeletons pop out of that portal? What happens when she is sent to other AU's? And what happens when she catches the eye sockets of various skeletons? || Cover art belongs to black-nyanko on Tumblr || © Toby Fox owns Undertale and all characters in it.
The Light With Knights (Bad Guy Sanses X Reader) by rose_okamikami
The Light With Knights (Bad Guy Sanses X Reader)
rose_okamikami
  • Reads 21,094
  • Votes 645
  • Parts 48
I really don't know how to describe my story ( I hope you have a PUNny time Reading this)
Void [Nightmare X Reader] by LotusdeCeniza
Void [Nightmare X Reader]
LotusdeCeniza
  • Reads 186,959
  • Votes 6,595
  • Parts 37
Y/N is the Guardian of nothingness. The shrub with flowers that she protects is home to all things that are considered to be nothing. When a walk in the woods allows her to make a new friend,a problem arises from the shadows. As Y/N tries to find balance between the protecting her plant and Nightmare a margin of error disrupts peace between feelings. Destruction and despair have plaguaged her once beautiful home because of this. How will Y/n help revert things to how they once were before. Slow burnish, on going nightmare x reader Not edited, cause most of this is written on the fly. Update monthly cause uninspired and school. Highest rankings: #1 dreamtale #1 Negativity #1 nightmarex reader #1 Sansxreader #1 nothing #1 passive #1 balance #1 Nightmare #1sans
An Angel's clipped wings (🔵mafia🔴 x fem reader)  by ActuallyAlastor
An Angel's clipped wings (🔵mafia🔴 x fem reader)
ActuallyAlastor
  • Reads 42,841
  • Votes 1,162
  • Parts 18
《《⚠️The lovely art to this book cover is done by HoneyBunBunUwU! In my library, her book of art is there for any Author looking for a cover to suit their book! I strongly suggest you ask her and get your book cover! She's the sweetest thing, and I am very grateful that she loves the books I write. Thank you, darling.⚠️》》 This story ships Mafia!Fell sans and Mafia!tale. Popular vote will end on who you end up with! You were a young adult, barely making your way into the real world. everything was changing drastically around you, and you couldn't stop it. You started out with nothing but rags to cover your body after running away from home. What happens when you're suddenly picked up by monsters and surrounded by rival mafias biting at eachothers throat, and fighting for you?