Nightkiller Stories

336 Stories

Papa Nightmare? [Nightkiller] [English Version] by soyunaotaku0512
#1
Papa Nightmare? [Nightkiller] [Eng...by soyunaotaku0512
Killer ends up in a small trouble, I said small? I don't think having a baby of the Nightmare is just a little problem. How will killer solve this? Will he be able to hi...
+22 more
Reborn as Classic Sans but different (rewrite) by SarahWingDing
#2
Reborn as Classic Sans but differe...by Sarah WingDing
A 31 year old female died and reincarnated as Classic Sans. The multiverse is fighting.Will she join the fight does she know the truth?
What I want by fallenmemes
#3
What I wantby Undertale dead memes
Color took Killer and gave him his emotions, everything was fine at first but then he got bored and to think of it he missed killing other's, would he spend his day's ki...
Nightkiller by cream4life
#4
Nightkillerby Southparkobsessed
Killer, a sans who's mind has gone completely, and with his "friend" destroyed an entire au, only to find out the backstabbing truth! And soon later finds a fu...
Completed
Pink Vial Incident (Killer X Nightmare fanfic) by Ren_CML
#5
Pink Vial Incident (Killer X Night...by Ren_CML
So heres the story, Noot Noot accidentaly drank the pink vial blah blah blah and then umm.. Just read the story...
Completed
The Start Of Something New [ErrorInk] by KelWithFrootloop
#6
The Start Of Something New [ErrorI...by LittleMeowMeow
;w; i made this for all the shippers out there, please tell me if u like i really think its not that good but uhh, if you like it- thanksss and if i dont update it regul...
Highschool Stories. (undertale Aus) by _DiamondDignity_
#7
Highschool Stories. (undertale Aus)by •PuppyKittyGacha•
This is my first story so I don't think It will be great. Anyway This is the story of mainly Classic and Red. After a huge glitch in Classic's timeline, The barrier fina...
Killer's Goofy Ahh Harem +13 by sum_thinw3ird
#8
Killer's Goofy Ahh Harem +13by .
this book was fanmade/inpired by @multi_ship_join all credits go to them (i dont know their pronouns TT) and yes i have full permission to use this idea.
nightmare x killer by Thekrillunderyourbed
#9
nightmare x killerby
☆this story includes fluff, gore, dark humor, PUNZ, graphic details, and realistic personalities somewhat, and nightkiller if you and not comfortable with these topics I...
Bitter Taste by SairenBlade
#10
Bitter Tasteby W.D Sairen
The bad sanses and the stars were fighting for many years.Now..it's the time to stop these useless battles and make a treaty for the two team. Both of the team...
Sans aus on crack by InksCreeps_
#11
Sans aus on crackby Muddy_squirrel22
Sans aus on crack.... That's all I gotta say Also there is ships: ~Errorink ~Cream ~Literally no dustberry ~Nightkiller ~Horrorlust ••••••••••••••••••••••••••••••••••...
Completed
The Immortal Stargazer by Doryzitter
#12
The Immortal Stargazerby Doryzitter
I finally had everything figured out in my life. I'm a normal human. I went to highschool, made friends, explored options for the future. Then, out of nowhere, guess wha...
~ That One Feeling ~ Nightmare X Killer [[ NightKiller ]] (Currently On Hiatus)  by TheKawaiiShipperHB23
#13
~ That One Feeling ~ Nightmare X K...by Faye
(Warning : 2018 Cringe written by my 12-13 year old past self from Chapters 1 up to Chapter 43) Not being able to love is the most difficult thing to resist. But what's...
Highschool Of Chaos (ErrorxInk) by Azieruu_
#14
Highschool Of Chaos (ErrorxInk)by i have 383 angels do u want t...
Making a deal with the rudest man alive was never just a choice but a commitment, living in poverty made him hand his fate to someone else. Despite wanting his highschoo...
The Castle that Changed my life by POTATO_QUEEN_WEY-
#15
The Castle that Changed my lifeby Potastic
Killer Target. A young lady who was taught to live of her free will and to never listen to rules. Magic flowed everywhere, and she was one of the few gifted with that. B...
Completed
Homey by coppermeadows
#16
Homeyby mx sinister.
A Killer x Nightmare story. Completed✔️ Rewriting. After killing everyone within his timeline, a mysterious figure appears in his house, permanently changing his life...
Sanscest Oneshots (Request Closed) by nothing_12367
#17
Sanscest Oneshots (Request Closed)by nothingbody
HI! request r no longer open and I will not be posting any new stories. I will be active reading stories but I am no longer writing. <3 thank you for 3k I think reads...
[[ NightKiller Oneshots ]] by TheKawaiiShipperHB23
#18
[[ NightKiller Oneshots ]]by Faye
[ REQUESTS ARE CURRENTLY CLOSED ] More ships of mine will be added soon into the Requests Lists to give this book more ships and accompany NightKiller. I hope y'all don'...
Nightkiller & Cream Oneshot/Fanfic book (2) by multi_ship_join
#19
Nightkiller & Cream Oneshot/Fanfic...by I'm just here.
cream and nightkiller can do love (or not) if you ship both cream and nightkiller your welcome! if you dont- Well why are you reading this uh? anyway lets fill up this b...
Completed
Sea-Crossed Lovers:A Nightkiller fanfic by HappyWriter62
#20
Sea-Crossed Lovers:A Nightkiller f...by HappyWriter62
So this is sort of going to be an AU version of the ship in a more experimental way. Like a kingdom&sea AU of the ships. It's experimental so I'm just seeing where I tak...