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Reborn As Dream Sans [Undertale Multiverse] by DeadEnDead
Fandoms: Undertale (Video Game)
07 Aug 2025
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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.
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"I need you to tell me that everything is going to be okay."
Cross needs reassurance. He asks both teams for it.
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The gang, with Error's help, get Nightmare a puppy. Is there a problem that they belonged to the Star Sanses before?
Series
- Part 1 of Nightmare's Clan
- Language:
- English
- Words:
- 39,783
- Chapters:
- 37/37
- Comments:
- 324
- Kudos:
- 836
- Bookmarks:
- 120
- Hits:
- 19,213
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Bookmark Notes:
Too cute
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Find and read again later.
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the Sansational Hero: Multiversal (Up for Adoption due to fear of hurting the D.I.D community) by AxoTheAxolotl318
Fandoms: Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
18 Jul 2025
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Izuku wakes up on his fourth birthday hearing 3 people in his head, Why do they sound the same? Anyway it's his 4th birthday so he should be getting his quick and his hands are bony now, so is the rest of him
Izuku now has 3 people in his, their? Head and cool blasters and other things
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Izuku gets D.I.D and the ability to use 3 different sanses abilities sets a day for a limited time before a rechargeThis is my first fic on here pls don send a mob
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Error didn't like when it happened, didn't like that he had them at all, didn't like that he'd been born with something that didn't even make sense for Skeletons to suffer through. But it did happen—every month, like clockwork—and oh boy, was Error about to bite someone's fucking head off.
Error whimpered as another wave of pain flared, his back arching upwards as his skull fell back. He clenched his teeth tight, refusing to make any noise, and his eye-lights flickered on and off with each painful throb. It was accompanied by the sensation of nausea, but he didn't have anything to throw up anyway, so he was left dry heaving pathetically.
The glitch hissed to himself and rolled over onto his side, curling into a tight ball again. He wasn't sure how much more he could take, how long this particular bout of suffering would last, but he didn't have a choice anyway.
Just a bit more. Just a bit longer.
He could handle this. He was strong enough. He'd done this thousands of times.
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Oh, who was he kidding?
Error wanted to fucking die.
Series
- Part 3 of Drabbles, Flash Fiction, & Short Stories
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Kiss Me, Kill Me (And a Secret Third Option) by Embrace_the_Deep (DefinitelyNotABee)
Fandoms: Undertale (Video Game)
28 Jul 2025
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Summary
What had Ink tried calling him again?
Someone named Killer?
As fitting as that name would have been for the previous owner of his body, he clearly remembered that he had been referred to as 'Sans' in the blurred bits of memories.
Maybe he was being mistaken for someone else.
He hopes he never meets this actual 'Killer', but even if they were some sort of shady person- skeleton- thing, that doesn't excuse kidnapping a stranger and chaining them to the floor of your home after nearly killing them!
With the most unimpressed expression he could muster, Quill forced the aching phalanges of his right hand into a wrist-up fist, and extended his middle finger.i.e. A self-indulgent crack-treated-seriously fic featuring isekai!Killer vs. the Multiverse. Enjoy!
Series
- Part 1 of The Third Secret Option
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21
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KillerSans + HumanQuill = BeautifulCharacter
I Much love this take in transmigration in the Undertale Multiverse fandom.
8/10
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Disclaimers:
Several details in this fic are heavily inspired by 'Blue joins the bad sanses' comic, so go check that out
Canon innacuracies: Passive and Corrupted Nightmare are the same person, Ink is the creator and not the protector, Ink, Error, Nightmare, and Dream, are all gods, Blue, Killer, Horror, and Dust's specific au timelines were all destroyed, and i took liberties with how the void works. Also, no Cross sans will be mentioned, i don't know enough about underverse, and there will be some OC non-sans God/entity/things later on. The fic will be split into parts, each lasting nine chapters.
Schedule: Once a week, on Saturday, Sunday, or Monday, and i will post art or a reference sheet with every chapter. Trigger warnings will be specified in chapter notes. I've never written for undertale before, so please let me know what you guys think :3With that said, the actual plot: After an injured Error crashes into Nightmare and Co's home, a close bond starts to form between the two gods, both forced villains. In light of Ink's attempt to kill Error, Dream finally starts to lose it, and Blue gets dragged along.
Average chapter length is 500-2000
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Found family: checked
Trans arc: checked
Errormare: checked
Trauma: checked 7w7Errormare slowburn, lovely one, very well written <3
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The story of how it all came to begin, and the story of what happened after. Two siblings are lost in a world of which they have no prior knowledge believing wholeheartedly that each one hates the other. They form their groups and go along their chosen paths until one day, those paths cross again.
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Come back to when energyss
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The Star Sanses and the Bad Sanses become closer. Set in a Wranglers (Cowboy) AU. Please help me summary.
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Nightmare had lost.
The multiverse had locked him away, and it seemed as if there would be no escape this time.
But..there is.
And now Nightmare has to do it all again, from beginning to end.
Maybe things will be different this time.
Now illustrated!
Series
- Part 41 of Oneshots
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The Memories of a Tale (Error!Sans x Reader) by Donut2460
Fandoms: Undertale (Video Game)
11 Feb 2023
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What... Happened? (Y/N), is a girl that wakes up in a hospital not knowing where she is, she was told to have amnesia over something that happened years ago that made her go into a coma for 5 years. Later, she inherits a little house, when she goes in she finds a note with a necklace that gives her strange abilities saying that she has to recover her memories a certain way because a disastrous event is coming and it’s up to her to save the multiverse. Will she be able to do it? And what surprises await her?
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1
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“YOU LOST IT?!”. Were the three words that echoed through the throne room, shaking the large ebony pillars that lined the walls. “WHAT DO YOU MEAN YOU LOST IT?!” “Well if Cross ha-”. “I don't care who’s fault it was, this was the easiest mission I have EVER tasked you three with!” A heavy grunt escapes Nightmare as he sinks into his seat. Pinching his nasal ridge. His tentacles dripped and swayed furiously. “Cross, seeing as you were the one leading this mission, do you care to explain what happened?”
Cross steps forward and bows down before the big throne. “Well, uhm, you see…”
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(Being remastered before I continue writing!!!) Chapters Remastered = 3/29
Nightmare had been alone in his head for the longest time. For 500 years he was able to gain more power, a castle, a gang, and a reputation of one of the most dangerous beings in the multiverse. But when Dream had broken out of stone, someone else made themselves known, someone who should have been dead.
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Corrupted Nightmare is a parasite, and Passive Nightmare refuses to die. He does not appreciate the identity theft.
Updates when I finish chapters, no more waits. I'll just post them as I finish them.
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29
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Error is the God of Destruction
He woke up with no memories of his past and a single goal, destroy every AU until only the original one stands
Error enjoys deeply his job and the fights with the guardians to him are nothing but a nuisance at the worst and entertaining on the best days
Everything changes when one day, in his perfect empty white home, Error finds something, someone, that gets his attention
A small figure sat in the infinite emptiness
A small colorless skeleton that resembles his beloved puppetsSeries
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反虚空捡到一只白骷髅。名字？error决定称之为——“ink”.
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Puppet with no colors by Tr95line
Error is the God of Destruction
He woke up with no memories of his past and a single goal, destroy every AU until only the original one stands
Error enjoys deeply his job and the fights with the guardians to him are nothing but a nuisance at the worst and entertaining on the best days
Everything changes when one day, in his perfect empty white home, Error finds something, someone, that gets his attention
A small figure sat in the infinite emptiness
A small colorless skeleton that resembles his beloved puppetsFallen stars: never the end, always a new beggining
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We All Pretend To Be the Heroes on the Good Side (But What If We're the Villains on the Other?) by Ghosts_Multiversal_Mindsoup
Fandoms: Undertale (Video Game)
20 Jun 2022
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Summary
Died, last night in my dreams,
Walking the streets, of some old ghost town
Time was thrown at the windAnd now I'm searching for trust,
In a city of rust
A city of vampiresThe war hammer felt unnaturally heavy in his hands. Still, he held it up and prepared for battle.
Though... he couldn't ease the weight in his SOUL.
___Blue is sick of Ink and Dream running around without considering that he isn't basically immortal (or actually immortal, in Ink's case). Blue can't keep up with them, he just can't.
So he tries his luck with Nightmare's Gang.
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What's so funny about HoPe, MERCY and the Pacifist way? by Lisetta888
Fandoms: Undertale (Video Game)
26 Nov 2022
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Summary
The right thing to do: everyone has their definition of right and wrong.
Should you always follow your morals? Or is sometimes the right thing to do to abandon them, to sacrifice them for the sake of everyone else's safety?
Error, Nightmare and the Gang know no MERCY. No matter how many times they're defeated, they never stop hurting people.
Will the Stars keep following their morals? Or have HoPe, MERCY and the Pacifist way become obsolete? -
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A different take on how the Fallen Stars might have come to be.
Series
- Part 28 of Oneshots
- Part 1 of Fallen Stars
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While the characters believe the multiverse has existed for thousands of years already, it truly starts with the first sentence of its story. Only Ink feels when it happens.
(...And then panics because he's now aware he's never actually protected a universe or had a conversation with a friend and probably doesn't know how to do any of that and they're all counting on him.)
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23/
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Bookmark Notes:
*gebtle hugs for Ink and Error*
Babies. Protecc.
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After Geno messed with his DETERMINATION he ended up in the Anti-Void. Slowly, he became insane, as he started to become a Error. Somehow, he finds a way out. Though, the AU he ends up in is unfinished and drained of hope, everyone is unfinished, except one little skeleton.
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Geno finds a way out the Anti-Void before he fully becomes Error. He ends up in ____Tale, and finds Ink. Ink is still a child and undeveloped, years away from ripping his soul. Geno and Ink find themselves in another AU, exploring and trying to live. While the rest of the Multiverse falls into chaos.
(Inspired by Prism's Tale in FTFO as well as FTFO itself)
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Was Lost, Now Found by TotallyNotAnArtist
After Geno messed with his DETERMINATION he ended up in the Anti-Void. Slowly, he became insane, as he started to become a Error. Somehow, he finds a way out. Though, the AU he ends up in is unfinished and drained of hope, everyone is unfinished, except one little skeleton.
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Geno finds a way out the Anti-Void before he fully becomes Error. He ends up in ____Tale, and finds Ink. Ink is still a child and undeveloped, years away from ripping his soul. Geno and Ink find themselves in another AU, exploring and trying to live. While the rest of the Multiverse falls into chaos.
(Inspired by Prism's Tale in FTFO as well as FTFO itself)
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(As of 28/7/25 the first chapter has been rewritten to improve the flow and clarity of the story.)
(I will continue to edit earlier chapters bit by bit. When I'm done, I will announce it in later chapters.)
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Error's done. Fate has been in control of his life for too long. He doesn't want to do this forced job anymore. No more. So he takes a risk.A risk that eventually makes Error terrified of what's to come. More for the ones he calls family than for himself.
Ink realises he's not the only one suffering from fate. He's just as trapped as Error is in this forced job. So Ink does the best thing he could think of. He helps. Well... That leads to more problems for both of them.
Fate will never go easy on him again.
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FGOD Error and Ink are taken by Fate because Error broke the rules, and Ink discovered that Error is experiencing the same struggles as him. The multiverse Sanses must rescue them.
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This series will be split into two parts:
Part 1: Entangled in Ink and Strings 17/?
Part 2: Stitched up at last(FGOD error belongs to harrish6)
Series
- Part 1 of Free at last
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