Undyne Stories

1.2K Stories

Mr.  Erratum by CrimsonOrRetry
#1
Mr. Erratumby Crimson/Retry
Error can take it no longer. After centuries of Pain and suffering, Error no longer cares what happens to the people who caused him pain, and now wants to leave the plac...
The Human Of Snowdin by SpiritWolfNura
#2
The Human Of Snowdinby Kyran Wolfe
A week after the death of Asriel and Chara, you fell. You become the new hope of the Underground, but problems complicate things. You have to leave the Underground. When...
Undertale X Reader by Frei_111
#3
Undertale X Readerby Frei_111
You woke up on bed of golden flowers without having anything to remember. Going to an adventure where you met with many monsters to go home. Easy, right? Not really, act...
For you by AdderTheWeeb
#4
For youby Sack’o’dads
All the monsters have left the underground and Sans is dealing with more than he had bargained Cover art does not belong to me
Completed
Mine (Male!Chara X Reader X Sans) by xxAnnieSan
#5
Mine (Male!Chara X Reader X Sans)by Annie San
You've been doing the same True Pacifist / Pacifist Run over and over in a place called the "Underground". Though you like the Underground, you can't help but...
Completed
Runaway by DevinGaming321
#6
Runawayby DevinGaming321
Finally. They made it to the surface. But after an attack on the monster king, Undyne reveals a hidden secret that destroys the group. Can they bring themselves back tog...
Completed
Undertale Daughter Scenarios by FrenchPokingOtaku
#7
Undertale Daughter Scenariosby ♡PokingUKnow♡
I was bored oh well but this is a scenario book so be warned this is my first and probably not my last so let us start and by the way your gonna start out as a baby to m...
(Sans x Reader) When Two Souls Meet by ZanaBSparrows
#8
(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...
Completed
Undertale x male reader by MemeBoy2876
#9
Undertale x male readerby Toad Yeager
So harem book of Charas and Frisks x male reader but real description is below this. The only one of his person in all universes is part of Undertale with an OP powers b...
Can I take you to Dinner? Mafi-fell!Sans x Reader.  [COMPLETED] by MissHoll-E-Socks
#10
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...
Completed
'Shy Pet' Underfell Sans X Reader by sentifrost
#11
'Shy Pet' Underfell Sans X Readerby finch
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 w...
Completed
𝓕𝓲𝓵𝓵𝓮𝓭 𝔀𝓲𝓽𝓱 𝓓𝓔𝓟𝓡𝓔𝓢𝓢𝓘𝓞𝓝. (Male Reader x undertale story) by ryumaki215
#12
𝓕𝓲𝓵𝓵𝓮𝓭 𝔀𝓲𝓽𝓱 𝓓𝓔𝓟𝓡𝓔𝓢...by ryumaki215
Something I've been thinking about making for a while now. I hope you guys can enjoy it! (Warning! Themes of suicide and depression are in here as well! If any of that b...
Completed
Undertale React by MysteriousPerson0193
#13
Undertale Reactby ----
Undertale is going to react. This will not be entirely canon and will include aspects of what I believe (backstories, ect.) I do not own the cover and I do not own any o...
Completed
A Journey Together (Sansby Fanfic) by Blue_Diamond5
#14
A Journey Together (Sansby Fanfic)by Blue
The barrier is finally down, and a new life is finally right up ahead. Opportunities like never seen before-in a world where they can finally enjoy the warmth of the sun...
No One is Happy with This (Undertale) by ANinnyMouse42
#15
No One is Happy with This (Underta...by ANinnyMouse42
~o0o~ Book 3 of the "Better Times" trilogy ~o0o~ (Book one: "The Time Before") (Book two: "A Name to Remember") Two years after the Barrier...
Completed
What We Hope For (Sans X Reader) ✨UNDER EDITING✨ by Grace97721
#16
What We Hope For (Sans X Reader) ✨...by Grace
Everyone has a happy ending. If you're not happy it's not the end . . . . •°•°☆°•°• Y/n (that being you) fell into the underground...
Somethings Changed by Moonstone_Ccino
#17
Somethings Changedby Moonstone_Ccino
Nightmare already has a hard life in the village. from all the bullying, to things being thrown at him, to people trying to steal the golden apples from the tree that ho...
Orange Heart [US!Papyrus x Male!Reader] by allalalalaa
#18
Orange Heart [US!Papyrus x Male!Re...by allalalalaa
Running away from the past, you accidentally fell down a hole. Now you're in a whole new world where monsters exist. Being the only human, you do your best to survive. T...
Endless possibilities (Underfell Sans x Gender Neutral Reader) by verypunnyauthor
#19
Endless possibilities (Underfell S...by Crimson
Word has been released that monsters now roamed the surface, and you can't help but feel slightly skeptical. You had been told since childhood that monsters were vile a...
Completed
Fallen Angel (Gaster x reader) by Feniksiara
#20
Fallen Angel (Gaster x reader)by Big Simp
DISCLAIMER: The god figure created in this fanfic is purely fictional. He is purposefully made to be prideful and cruel and is not supposed to represent any god. I am re...