Undertale Stories

1.2K Stories

Six Skeletons and The Waitress by ItsSwapPapyrus
Six Skeletons and The Waitressby Teutonic
A picture perfect family hides the fact that your life is filled with manipulation and abuse. When you move away after high school, you encounter more than one skeleton...
Void [Nightmare X Reader] by LotusdeCeniza
Void [Nightmare X Reader]by Cenitos
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...
Can I Stay? (Underswap!Sans × Reader) by Fruityyloopz
Can I Stay? (Underswap!Sans × Read...by Justmonika
[Prolong] My name is (Y/N). I have experienced many resets, so many I have lost count. The only people who remember are Sans, Flowey, and me. The monsters down here are...
Gaster gang x child reader  by Niharafroon
Gaster gang x child reader by Niharafroon
What happens when the Gaster Gang handle a human child situation? Read and find out! Based from Bun-bunmuse art story. ps. the reader is 5 year old girl ?
Not all Nightmares are bad (Nightmare Sans X reader) by hunter3love
Not all Nightmares are bad (Nightm...by Mother
You are a young teenager girl. You have a happy normal life........kinda. You're best friends with the angel of monsters, Frisk. One day you follow her and sans to stran...
You and your Bitty Pals by Blueprint15778
You and your Bitty Palsby Blueprint15778
It has been 5 years since monster broke free from the barrier, since then monsters, and humans live together in peace. But for some reason monsters have some how go a mi...
Broken [Sans Aus x Reader] by YocetheBoss
Broken [Sans Aus x Reader]by A Lonely Introvert
[ Sans AUs x Reader ] This wasn't what you expected - this isn't what you wanted. You wanted to rest, to finally, finally breathe, relax. But apparently life had other...
The Pun~Tastic Hero! {Bnha Various x Reader} by KitanaHatake4
The Pun~Tastic Hero! {Bnha Various...by Fallen Katana
(Y/N) (L/N) is your average Memelord Weeb. She spent most of her time watching anime, shipping male characters together, and not doing more than what she has to do. One...
Six Skeletons, One Maid by RaccoonSinQueen
Six Skeletons, One Maidby RaccoonSinQueen
Moved from AO3 because of reasons! "You are the only maid (or worker in general) that serves for the Skeletal Household. It's a skele-ton of work, but you manage by...
(Sans x Reader) When Two Souls Meet by ZanaBSparrows
(Sans x Reader) When Two Souls Meetby Zana B Sparrows
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 a...
What makes a Monster by ADateWithTheDevil
What makes a Monsterby ADateWithTheDevil
Sans has secrets and he's pretty good at keeping them. But how long can his secrets stay hidden, now that his friends have questions they don't want to give up? *** Upd...
Can I take you to Dinner? Mafi-fell!Sans x Reader.  [COMPLETED] by MissHoll-E-Socks
Can I take you to Dinner? Mafi-fel...by MissHoll-E-Socks
"How rude, not even gonna ask for a name??" He teased. "Why are you here?" You glowered, raising the whisk. The skeleton scoffed: "Well, glad yo...
Au Sans Boyfriend Scenarios by BJ_Karma
Au Sans Boyfriend Scenariosby Alex
What Would You Do If A Certain Skeleton Was In Love With You. Who Would It Be? Would He Be Cinnamon roll likeBlueberry? Or A Sinnamon Roll Like Raspberry?
Black Roses (Overprotective!Bad Guy Sans' x Child!Reader) by JulesRedenger
Black Roses (Overprotective!Bad Gu...by JulesRedenger
Nightmare found a young child a long time ago. When they fell into a coma it sent him over the edge. several hundred years later the child wakes up in a castle of darkne...
Male reader x UNDERTALE [FINISHED] by Simon-san
Male reader x UNDERTALE [FINISHED]by Simon
With no memory of your past, you find yourself in the underground. Your path to regain memory will be as eventful as it comes but try not to dive in the abiss...
Venerate by SpiritBlackPaw
Venerateby Fourth Wall
Venerate: to regard with great respect; revere. Error wasn't sure what to do with himself. He'd expected to die in the Void, not end up in a Multiverse so much younger t...
[DĪẞÇØÑ5ÍNÛ3D] by Kiari_DeadWeeb
[DĪẞÇØÑ5ÍNÛ3D]by Dr.Kiari DW
(Abused male frisk reader X RWBY) Basically it's like abused male Kris male reader but you are frisk this time
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...
I'm Not Sharing! (Fresh!Sans X Reader X Unfresh!Sans) by QueenOfNekoWriters
I'm Not Sharing! (Fresh!Sans X Rea...by DaydreamingNeko
Skeleton brothers Fresh and Unfresh have never gotten along. Especially when it comes to sharing things. So, when both of them meet (y/n) and fall for her... Things get...
Unique Love (Sans x reader) by ArtCookie-_-
Unique Love (Sans x reader)by Art_Cookie~
Monsters were known as a myth to humans. It was told in an old myth book; one with a rare soul, could save all. One foolish human falls down, destined to save a populati...