My new pet Swapfell! Sans x Reader

Reads 262,308
Votes 5,794
Parts 53
Time 2h 34m

Reads 262,308
Votes 5,794
Parts 53
Time 2h 34m

Mature

You fallen into the underground, lost, confused...and no memories, what will happen to you when you encounter monsters that want your soul?


Swapfell! Sans x readerAll Rights Reserved

reader sans swapfell undertale

Table of contents

53 parts

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My Little Mutt (FS!Papyrus x Female!Reader) by OreoDaSkeleton

Hi guys! First of all I should mention that the story pic isn't mine and of course Fellswap belongs to its original creator. A young hiker, Y/N gets lost and accidentally falls into a pit while stumbling in the dark. She wakes up to find herself in a whole new world that was never spoken of before except in children's stories. That's when she stumbles upon Barb (aka Mutt) and makes her first friend in the underground! But other monsters that live here aren't so welcoming.

the monsters are free and on the surface, frisk split her soul so chara can live

Underfell Sans X Reader: A New Beginning DISCONTINUED by Bearab00

(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?

An Oath of Mercy || UnderFell Sans x Reader by StrawberryMilkSnake

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)

Undertale X Reader by Multiplefandomsgirl

Frisk and her sister (Y/n) have fallen down into the world of monsters. What will happen? Will they survive? Will they be able to escape without losing their souls? Or will they bring destruction to each and every monster in the underground? What will they decide?

You Can Never Go Home by Minifighter1009

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 of. You activated an ancient spell which prevents him from ever coming back to your universe. The bad thing? You can't go back to your universe either. Suddenly you awake in snow and find yourself trapped Underground, a place inhabited by kind monsters, skeleton brothers, and a young kid who can reset time. As you grapple with your new reality, you realize he is here too, endangering the beings you have grown fond of. Now, in this unfamiliar world, you must confront the consequences of your actions. Can you protect your newfound companions from the coming shadows or will they fall victim to the evil you inadvertently unleashed?

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?

Soulbound || Sans x Reader by StrawberryMilkSnake

When a situation with a dying human ends up with you absorbing their soul, you panic (like any unprepared monster would). Suddenly Undyne is hunting you down, so you rope the mysterious skeleton next door into helping you. Which he does--in a very Sans way. And who knows? Maybe pretending to be his girl will pay off. | - Classic Sans x Monster Reader - Fake dating turns into real dating - One (1) very mysterious skeleton & one (1) very awkward reader - Papyrus is so sweet and innocent, I love him - Monsters really are in the wrong for killing children tho - I love happy endings and hate tension so expect an easy, relaxing read

Is Red for Blood or Love? (Fell Sans x Reader) by Styla_Mythic

This is a female reader x fell sans. (Y/N) was a kind girl. She loved her family and her friends. One day something went wrong and she fell into the Underground from the top of Mt.Ebott. After a weird run in with a talking flower, a killer goat lady and other weird deadly monsters, she finds herself in one of her worst situations yet. But is this new monster really a foe?

a glitch in the system error sans x reader (Complete) by Nettislettus

error x reader. you fell in hole, but not the underground. Found something special about your self and others. Keep reading to find more.

My Little Mutt (FS!Papyrus x Female!Reader)

Hi guys! First of all I should mention that the story pic isn't mine and of course Fellswap belongs to its original creator. A young hiker, Y/N gets lost and accidentally falls into a pit while stumbling in the dark. She wakes up to find herself in a whole new world that was never spoken of before except in children's stories. That's when she stumbles upon Barb (aka Mutt) and makes her first friend in the underground! But other monsters that live here aren't so welcoming.

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