Killerxouter Stories

26 Stories

Target Settled|Outer!Sans x Killer!Sans by LaliaShy
#1
Target Settled|Outer!Sans x Killer...by LaliaAngel
|UNDER EDITING| Killer was loyal to stay within Nightmare's team, little to no emotion with no worries, until he stumbled across a beautiful alternate Universe. Upon mee...
Sanscest One-shots (no lemons) (Requests Closed) by LtHunter
#2
Sanscest One-shots (no lemons) (Re...by Lieutenant Hunter
(This book is completed, if you want more stuff there's a second one) just some one-shots of Undertale AU ships. I do not own any of these characters (unless state other...
Completed
The Meteor Shower | NightKiller/StarKiller | by macrolunatic. by Macrolunatic
#3
The Meteor Shower | NightKiller/St...by Macrolunatic
Nightmare and Killer are in-love mates, but some months ago Killer met Outer on a mission, and he ended up liking his company. Killer stopped loving his mate for how Nig...
-Starry Eyed- (killer x outer / supernova) by justanotherweirdo121
#4
-Starry Eyed- (killer x outer / su...by justanotherweirdo121
This is a supernova fic! Or a killer x outer sans fic? Whatever. (btw cover arts not mine, love it though <3) This fic happens at around the same time as my bloodycro...
What is this? by i-am-not-here-ok
#5
What is this?by i-am-not-here-ok
killer and outer meet and that's all ur getting Im not very good at this bare with me
killer x outer (old) by Eambis
#6
killer x outer (old)by Emabis
today what killer first day of school in monster high went he first saw outer something change his life or keep the same
The Challenge Over One {Sanscest} (Multiship story) by idkTbh1273
#7
The Challenge Over One {Sanscest}...by Thank you ❤️
Three skeletons fight over a certain skele- Who will win?! You'll find out at the end! Till then, enjoy my story broskis! This is my first story....so don't insult me to...
outer x killer oneshot by Vera_Woldy
#8
outer x killer oneshotby Vera_Woldy
a outer x killer oneshot more into interaction then the fluffiness long chapters can request in any chapter fluff on the chapters with fluff written cover is from x_nz...
Sanscest One-Shots by LaliaShy
#10
Sanscest One-Shotsby LaliaAngel
A book to get my writing back into steady pacing, and while I add it some small ideas of other pairings as well! Mostly for fun, and create some small stories! ❋*˚┉┉┉┉...
Killer x Outer : Une long histoire ... by Leptitloup
#12
Killer x Outer : Une long histoire...by Nov Writing Alchimist
Killer? un jeune garçon de 16 ans qui va bientôt fêter ses 17 ans, a parcourut un long chemin. Né dans une famille de criminels et élevé comme telle , il était complètem...
magical kingdoms (sansect) by Shipperfangirl13
#13
magical kingdoms (sansect)by 💜I-ship-IT!💜
There were different kingdoms some of them were just normal nothing special about them others were more special they had monsters and humans they all had special powers...
An Outer x Killer story (Canceld)  by blackgoopbirdie
#14
An Outer x Killer story (Canceld) by Im a Birdie
Since there's a few ppl making a story bout dis two skelly ship, maybe I should start making it :D if u hate dis ship or homophobic, u can ignore dis story or curse at i...
Curae Bitties by LeroyOmalette
#15
Curae Bittiesby LeroyOfOmalettes
You are a girl/boy/genderless in a kingdom called Stonecold with other neighboring kingdoms which are Sevah, Linkfern, Brushy-Wushy, and Jawns. You meet 37 little bittie...
You had your chance!(Naj killer X Outer) Discontinue by JammyHood9
#16
You had your chance!(Naj killer X...by 🎵💜 Øreo 🎵💜
After killer confessed to nightmare and it was a complete disaster killer runs home crying. The next day when killer meets the new kid Outer nightmare realizes that he l...
you had you chance!(naj killer x outer REMAKE) by JammyHood9
#17
you had you chance!(naj killer x o...by 🎵💜 Øreo 🎵💜
look at the description on the original, but things are a bit different
Falling Stars| Killer x Outer/Outer x Killer by LaliaShy
#19
Falling Stars| Killer x Outer/Oute...by LaliaAngel
The creator no longer responded to the protector's calls, those colourful hues stopped dripping from the doodle-sphere. Without those hues, he couldn't feel anything. U...