Fellswap Stories

130 Stories

Becoming ink sans from undertale multiverse!? by KarmaAkabane425
Becoming ink sans from undertale m...by Karma Akabane
What if someone from our world died knowing a lot from the undertale and their multiverse/underverse? What if that person also knew about the balance and didn't creat to...
Transported into Swapfell sans as a second personality!? by KarmaAkabane425
Transported into Swapfell sans as...by Karma Akabane
What if someone from our world was transported into Swapfell sans as a second personality while the sans was just a mere babybones? (Different things, different personal...
My Little Mutt (FS!Papyrus x Female!Reader) by OreoDaSkeleton
My Little Mutt (FS!Papyrus x Femal...by ~Oreo~
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 accidental...
Naturetale : reborn as lavender  by KarmaAkabane425
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...
Reborn as fellswap san and now I'm kinda blind!? by KarmaAkabane425
Reborn as fellswap san and now I'm...by Karma Akabane
What if..someone from our world was reborn as fellswap sans? But an accident when he was young leads to becoming blind for a long time and papyrus feels guilty about not...
Chosen falls for a pirate. An Afterdeath fanfiction by TheLonerWraiter
Chosen falls for a pirate. An Afte...by so!'raisa'nsational
Geno is a lonely thief, resident of a small sea village. His past is covered in darkness. Somehow he can't recall who he was or his parents. He only had his 2 younger br...
About Time by _Irrelevant_Author_
About Timeby Irrel
You were always put in second place due to your sister being favored over you. No matter what you did it always seemed that you both were competing against each other. Y...
(ՏᗩᑎՏ ᗩᑌ x READER x ᑭᗩᑭYᖇᑌՏ ᗩᑌ)  A Skele-ton Of Harem by YourdailyMOONBERRY
(ՏᗩᑎՏ ᗩᑌ x READER x ᑭᗩᑭYᖇᑌՏ ᗩᑌ) A...by your daily MOON BERRY
You are a introvert who loves undertale and multiverse and loves to play video games and listin to music. What will happen if one day you meet the skele-bros of differ...
Bitty Bones (My Little Babies) DISCONTINUED (Creating a New Book Soon) by Delta_Nickle
Bitty Bones (My Little Babies) DIS...by Delta Nickle
this is a story about a girl who finds little bitties who were abandoned and takes them in little does she know that its harder than she thought and that the bittys won'...
Me and my brother become sans and papyrus from our own story!? by KarmaAkabane425
Me and my brother become sans and...by Karma Akabane
What if two brothers somehow end up in their own story as the sans and papyrus that they made? They called the story starfell, mostly because everyone in the story is li...
Reborn as sans from UnderSoul  by KarmaAkabane425
Reborn as sans from UnderSoul by Karma Akabane
I was reborn as sans from my own made up au. How did that happen? I have no idea. Luckily I was still a kid so I didn't have to act like how I made sans to act like but...
Villainous pursuit - Yandere AU Sans x Reader x Yandere AU Papyrus by Mallory_Abi_Moriarty
Villainous pursuit - Yandere AU Sa...by Mallory_Abi_Moriarty
Who thought that one day someone would break into your house and slice your neck in your sleep? Well, that was what happened, right before you were integrated into a shi...
Horrible Terrors (UndertalexReader) by KnittedHooks
Horrible Terrors (UndertalexReader)by Jacqueline Alfonsi-Jenner
She's been here too long, drifting through a space devoid of time and reason. Speaking to ghosts long gone and echoes of her own voice, a lesser being would have gone ma...
Evil Sanses x Reader 2.0 by Devxil
Evil Sanses x Reader 2.0by Devxil
This is a rewrite of my first ever Sans x reader kind of story. I hated the first one for bad writing skills, but I have come a long way from that. So have fun. *Hi, I'...
Gonetale: A UnderTale AU by runeightmiles
Gonetale: A UnderTale AUby runeightmiles
Alex falls as the 8th child. Will he be okay? Or will he die to the monsters? **************************
Meeting Yourself Twice  by TheMayFlowerUwU
Meeting Yourself Twice by The May Flower
The swap brothers stubble upon not one but two other skeletons. Both in serious condition Who are they and where do they come from ? Underfell,Underswap and Swapfell doe...
Genderverse Lore by Derek_ACreator
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 (...
House of Papyrus by WhyDidIDoThisToMe
House of Papyrusby Wheatley
You'd just been fired from your job, but as luck would have it there's a maid position in a house fulls of Sans-es!!! Oh wait, no there isn't... But there is a position...
Undertale au oneshot stories  by KarmaAkabane425
Undertale au oneshot stories by Karma Akabane
You can make a request for the one shots stories I'll probably make more parts but I'll also have other characters as the main characters in different parts. Like this f...
Sanscest Oneshots, Drabbles And Lemons 3 by Little_Marshmallows
Sanscest Oneshots, Drabbles And Le...by DISABLED ACCOUNT
This is all self-indulgent shit really thus why this book isn't going to be taking any request at all. thank you. I don't own anything except for the stories.