Undertalexreader
132 stories
Romeo and Roulette (Mafiatale Sans x Reader) by zeb_2001
zeb_2001
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There are certain street rules branded on the hearts of the people of Chicago. Certain rules like always watch your back. The city is thriving with mafias, all of which have a rivalry against each other. Each Mafia has there own contracts and if someone steals it they're dead meat. But what happens when the mafias have a common enemy...or are connected by some extraordinary event...does life go on or does everything fall apart? ***UPDATES EVERY FRIDAY*** Any other question..Private message me or comment. There is NO lemons or cussing.
Gaster x Reader- Not Your Fault by Singeroftales
Singeroftales
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You're a human who has fallen down into the underground. There you meet a certain skeletal scientist and his sons. Will you get close to the family or will you become their enemy. Loosely based on TheBombDiggity666 Dadster comics (which you should totally check out if you haven't already) and occurs before frisk's appearance. Also artwork is not mine~
The War Amongst Us (W.D. Gaster X Reader) by TheIndianaCrew
TheIndianaCrew
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(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 becomes apprehended by the enemy. What will happen when a young monster scientist tries to change her views? Thanks to Itachei on Deviantart for letting me use their artwork as the cover!
Do you Trust me? (Underfell sans x Reader story) by -Kyoko-Cream-
-Kyoko-Cream-
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Making friends with others may sound easy as you think! But the thing that starts betrayal is breaking their trust Hah! Got your interest? It better! Feelings are coming up your way....
Your Life?! (UF!Sans X Reader) by Pandorwini
Pandorwini
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WARNING: Lots of swearing, blood, cruelty and slight sexual themes!!!! Sans and Y/n are arch enemies. They can't go a second without insulting the other. But one day an...accident happens, forcing them to co operate until they find a sulotion to their "situation". But before that, they learn a lot about each other and maybe, the hate they held for each other, will transform into something more...something beautiful
Underfell Sans X Reader Lemon  by Arleenaalura
Arleenaalura
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Hope you enjoy reading this
Hidden Inside (Gaster!Sans X Reader) by PsychoChevre
PsychoChevre
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After the monsters are set free, they aren't too keen on befriending humanity. They won't show themselves yet. They will get revenge on the war the humans had waged years ago. Now they attack in secret, getting patrols and assassins prepared at nightfall. One of the pairs of assassins is Gaster!Sans and his brother. When they find a girl who is pretty, kind, and peaceful, maybe they will have a change of heart after all. (Gaster!Sans X Reader)
G!Sans X reader by LongbeforeGirls
LongbeforeGirls
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Now, you're about to read a story where YOU are the main character, if you're a fan of echotale and G!sans then this is the right story :3 Its my first story so please do not expect the best, but ill try :) Otherwise i'll be posting stories with other characters when this is done, hope you'll enjoy! :') Love ya!
Sorry About That (Gaster!Sans x Reader) by little-nabb
little-nabb
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You worked for the newspaper, doing a simple editing job and a few other things here and there. Ever since monsters came out of the ground, though, rent has sky-rocketed for you. You thought you could deal with it, but after a few months you need a roomie to help with the rent. Which, fortunately, you got one! But, unfortunately, you're too awkward to fucking deal, man. And this skeleton just laughs at you for it. -this fic has lots of cussing in it, and is a slowburn!- -if you have any suggestions of drabbles i should write for the story, comment!- all gaster!sans fics are way too serious to my liking on here, so I made more of a slice of life/comedy fanfic! hopefully this will go well HOOWEE Cover art by junkpilestuff on tumblr!! Best ranks: Undertale: #39 (out of 1000+ stories) Gaster Sans: #2 (out of 94 stories) Sans x reader: #8 (out of 595 stories) Sans: #28 (out of 1000+ stories) Slice of life: #22 (out of 1000+ stories) Reader insert: #68 (out of 1000+ stories)
Horror Sans X Reader by JaylynNathan
JaylynNathan
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You know what it is about except I'm gonna add that you were abused by your family. And there might be some things that get really close to Lemons.... or are Lemons.... that's kinda up to you personally if it's a lemon or not...just to let you know! You have been warned.