#1
Becoming A Undertale Multiverseby Aftertale Author~Chan
??? was a fan of undertale heavily but when she suddenly got hit with a truck (because everyone dies from trucks when they get isekaied.)she was expecting to be dead so...
#2
A Skeleton's Hope (Undertale AU's...by Dead
Sans and Papyrus were your best friends until randomly they just cut off all contact with you. This went for everyone else in your life so it didn't really hurt that muc...
Completed
#3
Darkness' Eternal Bride (Gaster x...by everail
WARNING: THIS CONTAINS HIGHLY MATURE CONTENT (BLOOD, VIOLENCE) READ AT YOUR OWN RISK
Money can change a lot of things.
It can even change your destiny.
Plunge yourself i...
Completed
#4
"It was Beautiful Outside...by Septiplyierfangirl
Extra Scenes from "It's a Beautiful Day Outside..."
If there's a particular scene you would like to see, let me know and it shall be so.
The unofficial sequel
#5
The Mountain's Heroby Sleep Deprived Man
A world of Humans and Monsters stuck in a time loop getting murdered over and over. Finally break free when a young hero stops a young child from jumping by jumping afte...
Completed
#6
Undertale: " Abnormalities "by Why_Is_It_Spicy
( 𝙸'𝚖 𝚜𝚝𝚒𝚕𝚕 𝚛𝚎𝚠𝚛𝚒𝚝𝚒𝚗𝚐, 𝚋𝚞𝚝 𝚒𝚝 𝚔𝚒𝚗𝚍𝚊 𝚌𝚘𝚞𝚗𝚝𝚜 𝚊𝚜 𝚊 𝚗𝚎𝚠 𝚜𝚝𝚘𝚛𝚢 𝚗𝚘𝚠. 𝙰𝚗𝚍 𝚘𝚏 𝚌𝚘𝚞𝚛𝚜𝚎, 𝚝𝚑𝚎 𝚝𝚑𝚞𝚖𝚋𝚗𝚊𝚒𝚕 𝚊𝚒𝚗'�...
#7
The War Amongst Us (W.D. Gaster X...by Indie
(Y\N) is a young female spy and soldier fighting in the War of Humans and Monsters. She is fighting on the humans' side of the war until a turn of events when she become...
#8
[COMPLETED] Gaster Gang x Reader O...by Artsyrogue
Ok I have never done a oneshot book before -_-
WARNING: VERY SLOW UPDATES
let's get the first thing out of the way-
I don't under any circumstances own:
-The Gaster Gang...
Completed
#10
Loved ( Underlust Sans x Reader )by Astarisk_Night
(Y/N) is a 24-year-old girl that just finished college. She learnt everything the hard way since she lost her parents at a young age. She wasn't interested in love and f...
#11
Skeleton Pillar (Gaster Gang x KNY...by Robo-Goat
(Y/N) (L/N), the Skeleton Hashira. Literally.
She was quite the unique Hashira. She was a demon who has been around for nearly 150 years, serving in the Demon Slayer Co...
#12
Gaster Gang Oneshot Book!by Destructo
If you have a request, you can comment or message me! I'll do lemons and fluff, whatever you request.
Gaster Gang goes to Bunnymuse!
Photos not mine unless said!
#13
GasterGang X Maestro by JustHumanish9694
Maestro can come and go as he pleases in and out of the void.
So being the link of the rest of the gasters to the (His) underground, He feels complied to help the altern...
#14
What it Means to Persevere by Kyran Wolfe
You've seen Sans past. So what is Gaster's? What about Grillby's?
Welcome to the Prequel of Forgotten History!
Completed
#16
Wings Of Fire: The Fallen Dragonby Fandom Fanatic
"So the legends really are true..." Have you ever wondered what it would be like if 'The Wings of Sky' from the prophecy never died? Yeah, me too. So I wrote a...
#17
ever lasting regrets. by Markivist
Y/n. a man who was obsessed with beating the most difficult Undertale fan games, he adored many animations such as satsujinki sans. but what if Y/n was transported into...
#18
W. D. Gaster - An Undertale Storyby RandomWriter
It all started when W. D. Gaster became the Royal Scientist of the Underground. Many monsters knew him, some even followed him. But one day, he injected himself with DET...
Completed
#19
Experimentation With Determination...by Max Lucas
A oneshot about Gaster, Sans, and Alphys' work in the True Lab.
...
..
.
✋︎ 👍︎✌︎☠︎ 💧︎☜︎☜︎ ✡︎⚐︎🕆︎
☜︎✞︎☜︎☠︎ ✋︎☞︎
✋︎ ✌︎💣︎ 💧︎❄︎✋︎☹︎☹︎ ☹︎⚐︎💧︎❄︎
...
✋︎☠︎❄︎☜︎☼︎☜︎💧︎❄︎✋︎...
Completed
#20
Dark, darker, yet darker ~ Underta...by papyrusscrollz
Y/N was tired of his mother's abuse, and decided he eventually had enough, and quickly ran away. It's so dark outside, he doesn't notice the big hole in the ground, unti...