Undertale
61 stories
A skeleton out of place by Itsvnzla2
Itsvnzla2
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Set a few years before the cataclysm that destroyed the world thanks to the virus that occurred in Owari no Seraph, Sans appears in Tokyo in 2004, eight years before the cataclysm. His existence disrupts the world's balance and awakens the interest of hidden organizations and supernatural forces.
Glitched Hero by fuck-you12345
fuck-you12345
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    Parts 7
Error lands in the MCU close to Avengers. I don't think Error will like anyone there. Let's find out! Warning: Cursing
Reborn as Dream Sans [Undertale Multiverse] by DeadEnDead
DeadEnDead
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    Parts 62
Reborn as the guardian of positivity, you find yourself in a strange new world, uncertain of what it may hold. Navigating it isn't easy with gods like Nightmare and Error trying to strike you down every step of the way. But unlike the previous Dream, you have nothing to lose, and are determined to forge a better path than the soul whom you have replaced. Cover art by the wonderful @Nymara379 on A03 ♡
Sooner or Later Mafiafell Sans x Classic Sans by SimpsinClown
SimpsinClown
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    Parts 5
A story where OUR Classic Sans gets stuck in an au where mobsters lived and meets a different Frisk and a version of him. Will there be romance or fire along the bridge. Will Sans get home and leave Frisk alone or stay long enough to romance another version of him on accident. [I loved the comic/story of Sooner of Later You're Going To Be Mine but also hating the Frans portion of it]
Reborn in Dusttale: The Twat in the Hoodie by sp0okyGh0stWriter
sp0okyGh0stWriter
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    Parts 61
(Art by @zuttoyonoturn69, can be found in X) Disclaimer: English isn't my first language, the protagonist is British, I'm sorry💀💀💀 Levi is a man who transmigrated into the body of Dust Sans variant, but with only LV 5. Now he has to figure out how to survive a murderous child who may or may not be possessed by Chara, or dude with far too much free time, and possibly even skeletons from other worlds.
Reincarnated as Error Sans (SANSES X READER) by m0xical
m0xical
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    Parts 6
After dying, you found yourself trapped in a white, endless void. You thought this was your afterlife: a tragic representation of how you felt trapped all your life; however, you noticed how your hands were... boney...? What the hell is happening? ERROR(READER) X SANSES DISCLAIMER: - MATURE CONTENT & VIOLENCE (Death, Killing, Violent language) - NONE OF THE ART USED IN THIS STORY IS MINE! CREDITS GO RESPECTIVELY TO THE ARTISTS (I will add credits later, as I go, when I find who created them)
Scrubbing Out the Stains by broskiskillet
broskiskillet
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    Parts 17
The multiverse decided, "Ayo, Imma need to make a whole other living thing to handle this Balance shit yo." Though there are restrictions, your boi is out in town and ready to get their ass kicked bro. No Romance Cover Art by me Contains an OC, and is OC-centric. Cross-posted on ArchiveofOurOwn User: FieldFlowers Inspired by Fresh New Antivirus by Hidden_Ajinn and the idea of Forced God of Destruction Error by Harrish6
ERROR ONE-SHOT  by yaoilover3173
yaoilover3173
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    Parts 2
A series of one-shots Involving Error. It will range from fluff, smut, or random ideas that come to my brain at 3:34 am. Enjoy!~ NO PICTURE IS MINE IN THIS BOOK!
A Miscalculation In Space by Readern111
Readern111
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    Parts 20
He knows he'll be dooming them if he falls, but he's tired, his body is breaking apart, held together on a higher being's whim only. He wonders if there'll be another to replace him. He wonders if there will be none. It's rather silly, really, since he won't even be around to witness that. The crowd, the rage and bloodthirst palpable in the air will ensure that. If he does not fall on his own, others will force him to. Or, in other words, the typical start of Error being forced to jump into the Void one way or another, in this case into the NaJ universe! The cover art belongs to irodimmatcha on deviantart(will take down if the artist asks me to)! Updates will be highly inconsistent. Edit: Now cross posted on Ao3 under the same username!
I Was Reborn As Asgore, What should I do Now? by Originalsparkstar
Originalsparkstar
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    Parts 7
After dying in the hospital due to complications in surgery, an Undertale fan finds themselves sitting in Asgore's throne room. Where they have no idea where they are in the timeline or if they're in an AU or a Classic timeline. How will they cope with this change, and what changes to the story will this make?