Gaster Stories

1.2K Stories

(Sans x Reader) When Two Souls Meet by ZanaBSparrows
#1
(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
Light in the Dark (Gaster X Reader) by SpiritWolfNura
#2
Light in the Dark (Gaster X Reader)by Kyran Wolfe
He went blind in a freak accident at the lab. Now all he 'sees' is darkness. Until.. he meets you.
Completed
Loved (  Underlust Sans x Reader  ) by Astarisk_Night
#3
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...
Undertale: giving soul by Author-Dayo
#4
Undertale: giving soulby Author-Dayo
This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a...
Quirkless Judgement (Sans x MHA/BNHA) by JeremyAaron0
#5
Quirkless Judgement (Sans x MHA/BN...by Trait of Confusion
Just like any other Sans X MHA/BNHA, Sans dies but with Chara. Exactly 100 years later, Sans woke up in the middle of Japan. Will he get the hang of his new world? Unde...
Completed
Undertale Sister Scenarios by EmilySkelewolf
#6
Undertale Sister Scenariosby Lady of WIP
"Like Underfell, but a different AU."
CREATORS BEGINNINGS by fizziethefrog
#7
CREATORS BEGINNINGSby + ~{ FELIX }~ +
Underverse self insert Includes Y/N's that might actually make sense REWRITE
Undertale Comics 1 by crazytitan25
#8
Undertale Comics 1by crazytitan25
Just a bunch of comics about Undertale.I do not own this comics.
Completed
Undertale Tickle Stories (Main Series) by nman1983
#9
Undertale Tickle Stories (Main Ser...by Krat395
Cover photo drawn by SodiePawp. Hello there! This is nman1983 and I am a male in his 30s that writes Undertale tickle stories, something of which I have been doing since...
Money, Jokes, and War (Sans x Reader) by awkward_casey
#10
Money, Jokes, and War (Sans x Read...by no<3
A young girl, Y/N, has one of the rarest soul types- -empathy. She can feel when people are having a bad day which leads her into meeting two skeletons. While one quickl...
Reset {UNDERTALE} by emotistic-optimistic
#11
Reset {UNDERTALE}by Emotistic Optimistic
*FEATURED STORY* As Judge for King Asgore Dreemurr, Sans has seen a lot of strange stuff. But when he wakes up with the feeling that something is completely wrong, he de...
Completed
We Speak In Hands (Gaster x Female!Reader) by OreoDaSkeleton
#12
We Speak In Hands (Gaster x Female...by ~Oreo~
Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the ta...
More than friends (Female Chara x reader) by Friskybits13
#13
More than friends (Female Chara x...by Cringe
Yes there will be mistakes >:3
Completed
i won't let you leave me【Yandere!Sans x Reader】 by otomonmon
#14
i won't let you leave me【Yandere!S...by monmon
It wasn't fair. Sans had finally saved you, did it the right way without breaking any moral code. And yet, it wasn't enough. So, he decided to play by the rules the worl...
Completed
Undertale Scenarios by InWolfsClothing
#15
Undertale Scenariosby In Wolf's Clothing
A series of semi-realistic scenarios including a handful of Undertale characters. In otherwords, stick around. ... Please.
The Time Before (Undertale) by ANinnyMouse42
#16
The Time Before (Undertale)by ANinnyMouse42
~o0o~ Book 1 of the "Better Times" trilogy ~o0o~ (Book two: "A Name to Remember") (Book three: "No One is Happy with This") There was a tim...
Completed
Can I take you to Dinner? Mafi-fell!Sans x Reader.  [COMPLETED] by MissHoll-E-Socks
#17
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...
The Void Hero| Gaster x My hero academia  by Lost_Naito
#18
The Void Hero| Gaster x My hero ac...by Lost Naito
Gaster, the Royal Scientist created best of his invention. Core of Hotland. But there was an accident that ended his life. As a result of the crash at launch, he fell di...
18TH STAR CONSTELLATION: [ ̶H̶]ATE/BLACK SOUL [FOUR] by Anon_Author-420
#19
18TH STAR CONSTELLATION: [ ̶H̶]ATE...by Anon_Author-420
================================================================================== [Description]: A guy named Cep lives in a crappy house, and his parents are not exactl...
No Chocolate - Chara X Frisk by mellophor
#20
No Chocolate - Chara X Friskby Mello
DRAMA, ACTION, BLOODSHED... Love? After erasing hundreds and hundreds of timelines, Chara is suddenly stripped of her abilities. She's forced to lead an everyday life i...
Completed