Search: underfell
9,040 stories
Why Him? | Underfell Sans x Reader

"Can someone please just tell me.... Why him.....?"Confidence. That emotion has been coming to you a lot ever since you had met him...But Why him...?

191.8K 34 6K Full
An Oath of Mercy || UnderFell Sans x Reader

One clumsy moment and a broken leg are all it takes to leave you at the mercy of the very edgy and very hostile monsters of the underground. Thanks to your knowledge as a doctor (and oath to do no harm), you're able to convince the Great and Terrible Papyrus to keep you alive. But how are you going to find your way back to the surface with a bum leg and a short skeleton that doesn't seem to like you? | - UnderFell Sans x Human Reader - Enemies to lovers but Fell is the only one hating - Your leg privileges are revoked, and Fell needs to wash his mouth with soap - Flowey is an equippable companion and decides to help you cuz he actually gets something out of it - My own interpretation of UnderFell (tho from what I've seen it doesn't really have a narrative anyway)

9.7K 14 424 Full
(Underfell sans x reader (female)) UNDERCOVER

You're a human that has fallen into Mt. Ebott on the year where all humans dress as monsters...Halloween. So how will the monsters know if you're a human or not?

480.6K 56 17K Full
Underfell Sans X Frisk

When Frisk falls into the Underground, she is horrified to discover the world of monsters is every bit as evil and broken as she had been told her entire life. But when she meets Sans, she wonders if there is love inside some of the monsters after all...

43.7K 32 651 Full
All The Scenarios: Underfell

(Underfell Sister Scenarios) Being the only sister out of the three siblings in Underfell is tough. You have more problems, and being the youngest, you still have plenty to learn! Join me and these fellow readers to venture what happens in Underfell with Sister Scenarios!

188.9K 32 3.7K Full
'Shy Pet' Underfell Sans X Reader

[Disclaimer that this book is very old nd poorly written, please keep that in mind!]You were shy.You were small.You were picked on.You were told you weren't tall enough.You were hurt.Physically and mentally.He wanted a pet.He wanted someone who wasn't his brother.He wanted someone to talk to.He wanted a purpose.He wanted you...{If you are reading this story on any platform other than Wattpad, you are very likely to be at risk of a malware attack. If you wish to read this story in it's original, safe form, please go to Wattpad. Thank you.}[EDIT: I am now aware of the plot errors in this story, but this book will never be edited nor re-written, so I kindly ask you to stop commenting about them.]~Achievements~~ #1 in #Alphys ~~ #1 in #Fell ~~ #1 in #Underfell ~~ #3 in #Flowey ~~ #1 in #Fellsans ~~ #3 in #Underfellsans ~~ #1 in #Mettaton ~~ #1 in #Papyrus ~

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Not Just Evil (Underfell Papyrus X Reader)

Underfell Papyrus is viewed as one of the most ruthless monsters in the underground but what is really under that tough persona?Thanks to Tamqul on Deviantart for letting me use their awesome artwork as the cover!

162.1K 32 5.5K Full
Underfell Sister Scenarios

How would your life be as Sans and Papyrus's sister in Underfell?

391.3K 34 8.5K Full
cherry boy ( underfell )

" what am i supposed to do? " | Underfell AU |©︎ 2018

7.3K 4 158 Full
UnderFell sans x frisk (Old story)

Welcome to underfell! An au, where everyone is evil except frisk, flowey, and chara!

58.6K 14 1.3K Full
underfell sans x reader

you fell into the underground a few weeks ago. after escaping from toriel, you met a tall skele who was honestly one of the coolest guys you'd ever met. (sorry if this fic sucks haha, I've never done this before, never done any romance stuff, i have never been in a relationship before so wish me luck.)

22.7K 12 361 Full
Underfell Papyrus x reader- All hail the king (Completed)

A young human runs out of the ruins desperate to get to safety. She runs into the Skeleton brothers Sans and Papyrus. Before she can know what's happening her world is completely thrown upside down. Sans is horrible but Papyrus.... he's not as bad as he makes himself out to be. What will happen to the young girl? Will she be saved or killed? And will she finally figure out the secret her mother was hinting at before she died?

49.6K 23 1.3K Full
Power to Heal (Underfell!Sans X Reader)

You wanted to help but it was too late...So, you left. Tears filled your eyes as you thought of the one person that needed you the most...They were gone and it's your fault.You ran and ran trying to escape reality. You thought if you could run far enough or fast enough that you wouldn't have just lost everything that made you want to live and exist... but you did.[CoverArt: By Me

82.7K 41 3.3K Full
Abused-Underfell Au

Sans is getting abused by his younger brother, Papyrus. That's all I have to say.

82.6K 30 1.7K Full
UnderFell Sans X Reader

MEH just another function ha ha a so hope you guys enjoy! (^v^)(^v^)(^v^)

42.4K 7 690 Full
Demons Love   [Underfell Sans x Demon-Reader]

Y/N is a half Demon Half Human, who lives with her friend Amy. They moved to a little town recently where Amy has loads of friends, which is the reason both of u moved there. Now... Only Amy knows ur little secret about u being half demon. Also ur the type of gurl who is kinds shy sometimes, has MAJOR ANGER ISSUES if u get really pissed off, and ur extremely....hyper. ANYWAYS.... u meet Sans and somehow get off at a really bad start, then u too start to get used to each other then, blah! Just a little hint, this is my first x reader thang, so wish me luck! YASS IM SO AMAZING!!!!! Srry got lazy to write down details in here! But I will explain later in le story!!! Also, if u are nothing like the gurl I just described, then u should still read it cause can!!! I CONTROL UR LIFE IN THIS STORY!!! MUAHAHAHA......Alright buh bye!Edit 2019: This story is so cringey, I wasnt able to read my story without crying and dying of cringe XD, thx to all the people who read it over these past two years lol, hope you enjoy!One more thing, I highly suggest you dont read this story unless you're willing to die of cringe. Like seriously, this story is just. . . . terrible (in my opinion) Have fun

31.3K 24 624 Full
Hopes, Dreams and Dust (Asriel & Chara - Underfell)

The events of the Underfell Alternate Universe, Asriel finds a human named Chara in the underground. Asriel has been taught that humans are the enemy and should be destroyed, and yet this human cannot even defend themselves. What will Asriel do?

22.2K 12 596 Full
Fight or Mercy | Underfell x Abused! Reader

[2nd book] ((COMPLETED)) {Undertale AU - Underfell} [WARNING:ENDING AND PLOT IS VERY CRINGEY] "Long ago, two races ruled the earth, the Humans and the Monsters. One day, war broke between the two races. Many have fallen to serve their kind. Years later, the humans were victorious. With their magic, seven of their strongest wizards sealed all the monsters underground with a magical barrier. Only a human soul could pass. Mt. Ebott 201X, they say those daring enough to climb up the mountain.... never return. ""Leave them, Y/N! Run! "___________________________________________I'm a Undertale addict. I freaking love the story line and characters! One of my favorite AUs is Underfell so I'm finally making an X reader. Also, if there are wrong spelling or grammar, please tell me. I'm using GoKeyboard. Enjoy my Crappy 2nd book!

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FIVE NIGHTS AT UNDERFELL

What will happen if the Afton's children went into Underfell? Will they perish or survive...or find a new family bond? Go to @Awesome1o2 He has the Original Story of Undertale.

5.6K 17 202 Full
【Angel of Blood】Underfell!Sans X Reader

Description: Once a long time ago, the multiverses were doing what they would normally do and were getting along just fine. Suddenly, it changed. Y/N L/N fell along with their parents into the Underground. In this world, it's LOVE or love.

210.5K 51 6.1K Full
My darling ~ A Yandere Underfell Mettaton X Reader Story [Complete]

[2nd book]A Yandere Underfell Mettaton x reader storyAfter Y/n falls down, they meet someone to help them throughout their way back home. Somehow they become very good friends, untill a robot ( (not so) superstar) comes in the way and falls in love. This love drives him insane into an obsession. "W-What do you want from me?!""I want you to be mine, M̶y̶ d̶a̶r̶l̶i̶n̶g̶~"I Do not own Undertale, Underfell or Any of the characters! I also do not own the art I just edited the cover!Will update on Tuesdays, Fridays and maybe on the weekendsSlow updates ( Sorry )Also might be some typos/errors through out the storyStarted writing: 1/21/23Ended writing: 5/12/23

12.1K 44 320 Full
Underfell Sans X Reader: A New Beginning DISCONTINUED

(Y/n) was a cheerful young girl once. Her life couldn't have been better, that is until that fateful day. With the loss of her mother and becoming a victim of sex trafficking for many years, she decided that maybe death would be better. She decides to take her chances on Mt. Ebott. In the place she thought would finally end her life she finds... monsters? Will they be her saving grace or the end of her? How about a certain edgy skeleton?

10.4K 30 266 Full
Underfell Papyrus x (Fox)Monster! Reader

After being taken and tortured by the humans for 10 years, you went back to the undergrounds to find your child hood friends. When you see Papyrus, why does everything he does cause you to blush?

25.9K 5 596 Full
UnderFell Sans x Male Reader

I have seen alot Female Reader's x Fell sans So i wanted to try a Male Reader! :)Please be aware that i am not good at this types of books. :)⚠️ THIS BOOK CONTAINS ⚠️- LANGUEGE- FIGHTING- SOME SFW

13.3K 13 353
UnderTale Oneshots (FINISHED)

(I DO NOT WRITE ABOUT UNDERTALE ANYMORE SO PLEASE DON'T REQUEST ON MY CHAPTERS) (AND FOR THE LOVE OF GOD STOP COMMENTING ABOUT MY GRAMMAR, I AM SWEDISH AND I HAD A HARD TIME LEARNING THE ENGLISH GRAMMAR. I'M MUCH BETTER AT ENGLISH NOW)This is my oneshots of UnderTale. It invloes AU'S to! Background picture by Casper-Cat on Tumblr, editing by me, and editing program is called covercreator.net. Mostly X reader

2.4M 200 48.1K Full
Furtastic

A girl who has never seen the world outside of the lab sees it for the first time only to fall down into the underground. What will she find down there?

43.2K 25 1.5K Full