Undertale fanfic
41 stories
I'm a Fan! by miikamiela
miikamiela
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[formerly known as 'I'm Not A Cannibal!'] - Waking up in a strangely familiar place is weird. Realising you've been turned into a skeleton is even weirder. But actually BEING Sans? And not just any Sans, but THIS Sans? Oof, this is gonna be interesting, especially since he doesn't seem to STAY in his AU. - Slight SI-OC!Horror Sans, aka I just threw some of my traits at an unnamed OC, and then threw the OC into Horror's role to see what would happen. - Please note that this story will have ships between skeletons, keeping secret who, and there is something else too, but I don't really want to say what since it would spoil quite a lot of things. (On AO3 it's in the tags tho, so I guess it's been spoiled there already)
HorrorSawp-tale by Mutt_Prime
Mutt_Prime
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Getting stabbed to death and being reincarnated as a skeleton monster isn't the weirdest thing in my life but having multiple soulmates in another Universe that's just too much. And I have to deal with a creepy fan who believes that she is my "soulmate" and the others as well? PS: the story does not belong to me it belongs to my good friend Sans3465 on fanfiction.net who is a big fan of the undertale series but is uncomfortable sharing his or her story on Wattpad or AO3 because they're really sensitive about getting negative reviews on their story so we decided to help encourage them by posting their work on my account and dreadwing346 Ao3 account so enjoy the story.
Horror's of the Multiverse (Being Rewritten) by UnderTaleHyperFixed
UnderTaleHyperFixed
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Someone dies and is Reborn as Sans. Not just any normal Sans like they assume as first, but a HORROR Sans. As if dealing with Gaster when they were young wasn't enough, now they have to go through a famine. What's this? Papy, died? Also, why is Nightmare here?
A Deathly Harem by tRaSh_4U
tRaSh_4U
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    Parts 13
When Reaper encounters three skeletons who don't die from his touches, all three fall in love with him in an instant. Reaper then has to overcome and endure each one of there feelings while keeping all of them happy as the three skeletons fight for Reaper's attention and love for themselves. Has reached #1 in Sanscest Has reached #1 in Reapersans Has reached #1 in GenoxReaper
Unexpected Rebirth: Reborn as Error 404 by Originalsparkstar
Originalsparkstar
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Error 404 always had a singular goal, to revives AlphaTale, the first AU. But what happens when he finds out AlphaTale wasn't actually the first AU? Devastated by the Knowledge that his entire life was based on a major lie Error 404 kills himself. In a different reality at the same time, someone with a similar soul is killed in a hit and run. Only to wake up as Error 404. (Cover Art by Noem Tatsumi https://medibang.com/author/17140277/ ))
Deaf Fresh x Error by Shushurmouth
Shushurmouth
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    Parts 7
Atayayayayya this started in my from my oneshot book aye
I'm Broomie!?!? Reborn as Broomie in an Fgod Multiverse. by Originalsparkstar
Originalsparkstar
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I thought of this and it's been stuck with me for a while so yea, enjoy.
Waking Up As G In A Shitty Apartment by Originalsparkstar
Originalsparkstar
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I'm doing it again lol starting a new story with a lot to work on. Oh well... Cover Art by https://www.deviantart.com/virulentwings
As ready as I can be since I'm dust...wait hold the phone! Pregnant!?  by KarmaAkabane425
KarmaAkabane425
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(You know how it goes, someone from our world Ends up dead and becomes dust sans..but somehow pregangt, different things, different personalities etc
I Became Underfell Papyrus, But Something's Different... by Originalsparkstar
Originalsparkstar
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Another Story about being reborn in an Undertale AU, but with a twist. How will this affect the story of Underfell? And what will happen, when they eventually meet our AUs?