1 - 20 of 205 Works in Protective Dreamtale Nightmare Sans (Undertale)
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Ink saw with his own eyes when Error was thrown into the abyss because of his attack. He thought Error was lost forever. Worse, the Multiverse began to destroy itself because too many Aus were appearing there and no one was there to destroy them.
So until the last moment, some action was taken.
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Warning: Heavy sadism, abuse, manipulation, trauma and self harm topics.
Nightmare is living the life. He's got a castle, power, whatever he wants when he wants it. Even if he's got a little ghostly stalker following him.
Unfortunately, his enemies are teaming up, and he can't do everything alone anymore.
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Reaper lost Geno a long time ago. Years passed, worlds changed. Their son, Goth, was long grown. But the pain never let go of the god of death. It lived in him like a weed woven from happiness and memory.
Error thought of himself as someone who didn't need family, warmth, happiness, a home — he didn't experience it, and the dead, broken feeling inside when he looked at something like that from the sidelines, was was just that. a mistake. He shunned others, and they shunned him back.
This was how it was supposed to go on — quiet, silent, lonely, meaningless.
Until Error began to remember something. Something that had been hidden for years in his memory, something that was breaking him, and something that caused Error to suddenly find himself next to Reaper, withholding information about who he used to be.
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Set during the Third Nightmare. Specifically - chapter 1320.
After Nephis fell asleep from the exhaustion of navigating the ketch with True Names, Sunny ordered Nightmare to stand guard over her dreams. This work is a glimpse into the dream she was having.Series
- Part 1 of 4S: Shadow Slave - Short Stories
- Language:
- English
- Words:
- 749
- Chapters:
- 1/1
- Kudos:
- 5
- Hits:
- 80
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When the Minor Star follows the Small Moon by Frikisbits231
Fandoms: Undertale (Video Game)
29 Aug 2025
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Or: In which baby Lux attacks, again, but this time a Guardian of Feelings (child), Nightmare. And everyone in Dreamtale is confused.
- A protective (and survival) instinct is reborn in Nightmare (also known to Lux as Ma).
- Dream (child) helps his brother in every way he can... and his niece? (he creates confusion shhh-).
- And the Dreamtale villagers reconsider in their minds (finally) their attacks on Nightmare in the face of the purity that baby Lux emanates.(Yesss, I don't even know what I do during my periods of writer's block.)
Series
- Part 2 of Another Dreamy-tale...
- Part 4 of ❤️🩹💞 Caring for Babybones 💞🥰
- Part 3 of Oh, look at a fanfic with one of the fanchilds!
- Part 2 of This is Lux *slurps* and this is Lux's mom
- Language:
- English
- Words:
- 1,840
- Chapters:
- 1/?
- Kudos:
- 6
- Hits:
- 59
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Summary
Dream is desperate and he resorts to the one method he swore he'd never try—killing Nightmare. But things don't always go as planned, fortunately, things changed for the better.
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All the members of Nightmare’s gang struggle with their own issues. From mental anguish to physical pain, they struggle to cope with their conditions. But luckily, they have each other.
(Poly Bad Sans, character study/slice of life)
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Where Have You Buried All Your Children? by Estel_dreamer
Fandoms: Undertale (Video Game)
17 Aug 2025
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Ink was familiar with creating, it’s what he was created to do after all. It was woven into his very magic and essence. Every universe, every variant derived from him in some way, whether it be from being formed by his own hands or splitting off from his own creation into something new. But even so, they were never truly his own. He gave them tangibility, but they gave themselves form, they took his starting point and rushed headlong into the unknown. He loved them all the same, as fleeting as they were.
Ink knew he shouldn’t have done it. He was putting more than just himself and this new universe at stake. But he wanted something that he could call his own, he wanted to be selfish and greedy just this once. He’d seen others have children, have beings tied so closely to themselves that they loved and called their own. He wanted that, he wanted his own child, his own creation.
A choice to be selfish may be just what the multiverse needs though to start repairing broken bonds, to form a happy family once more. Or it might break it all apart once and for all. Only time will tell
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Nightmare and Dream flee a dangerous enemy, an unconscious Ink in tow. While Ink’s distressed emotions give Nightmare more strength than he would have normally, it’s still not easy.
Dream remembers that there is in fact a way to make this whole ordeal a little easier for his brother.
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One day, Nightmare decided to visit a new, neutral AU he had encountered.
There, the King of Negativity met a barista named Vera.
And they are immediately drawn to one another.
Why do their souls feel so...... Connected?
Series
- Part 2 of Vera living her best life :3
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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
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Bodyguards [Dreamtale/Bad Guy Sanses Story] by NotaTeenDemon
Fandoms: Undertale (Video Game)
30 Jul 2025
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Adult Passive Nightmare's ill fated life in (pre-apple-incident) Dreamtale is forever changed when the "Murder Time Trio" come to his rescue against his usual bullies. Nightmare returns the favor by becoming their new dadmare. May have some dark themes.
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A story of how Tenpatch came into his own as the Prince of Negativity, and how the multiverse came to know Nightmare's heir.
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The townsfolk leave Nightmare in the woods for the Fae, which is the correct way to deal with a changeling. This is a problem for several reasons.
1) Nightmare is said child and he is not a changeling.
2) Since he is not a changeling, there is no Fae coming to collect him. That means he is being left to die, which is marginally bad.Perhaps his only hope is the Fae he’s unwittingly drawn the attention of. It’s risky, but really, he was just betrayed by the town he grew up in, so… he has nothing else to lose, why not?
(In other news, Fae!Nim has acquired a new child.)OR: Fae UTMV AU where Fae!Nim adopts the Dreamtale Twins. That’s it, that’s the fic.
Series
- Part 6 of Fae UTMV
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Summary
The biting wind whipped around Killer's skull, the black liquid weeping from his empty sockets stinging his cheekbones. Duty was a cold mistress, but a necessary one. He adjusted the magically conjured muscle in his chest, the artificial weight a constant reminder of the task at hand. Around him, Dust shifted, his shorter frame a blur of controlled movement as he scanned the desolate landscape. Horror, a hulking shadow against the grey sky, remained silent, his single eye scanning across the landscape.
"Anything?" Killer rasped,
Dust shook his head, his face turned away from Killer "Nothing but scrub and whispers."
Whispers of revolution.
Horror suddenly stiffened, his massive hand rising and pointing to a faint figure. He tilts his head, his skull creaking softly like a door being scratched at. "Down there."
Killer followed Horror's point. A thin plume of smoke curled against the horizon. It was becoming more visible the more he looked, A campsite. A potential breeding ground for rebellion. His empty sockets burned with a phantom fire. He tightened his grip on the hilt of his conjured blade in his pouch,
"Let's remind them what happens to traitors," Killer voiced. The hunt had begun.
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A mafia AU where Nightmare controls the most influential mafia in the city. Killer is struggling to make it by despite unfortunate life circumstances.
One day, the two meet under a stressful situation, and end up clicking together.
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Open yourself up to a loving home( & love) [Cross/Error] (story arc 1) by Itzaria
Fandoms: Undertale (Video Game)
01 Jul 2025
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Error had spent a long time doing the same thing repeatedly. First, it was watching others that he loved go through the same pain while not being able to help. Now, it was to continuously fix all of Ink's mistakes regarding which worlds are fit to continue to exist.
However, all that changes when he happens upon Cross's world fresh out of its destruction, throwing a monkey wrench into how he had gone through life up to this point. With Nightmare's help, Cross is shaking up Error's life, but Error doesn't actually mind it as much as he thought he would.
Will Nightmare, through Cross, finally be able to convince Error that he, too, deserves a happy life and home? Is there something more behind Error's feelings for Cross? What is now waiting for them with all the new changes and opportunities? Follow them all as they answer all of those questions and more.
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What if Nightmare ate all of the apples? Dream gets none, but what else? We’re going to have a very depressed Dream in this one. Suicidal, prone to self harm, everything. And Nightmare has to track Dream down and look after him. In this, right after the Apple Incident, Dream runs away, living on his own. Nightmare takes it upon himself to make sure that Dream doesn’t get killed, in a Multiverse without Positivity.
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The AU gave Dust a bad feeling since he set foot there, but he had no idea what danger lurked inside. It was a new threat. Or rather, an old threat with a new face.
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It was a bit...ironic, honestly.
He (was he a 'he'? or was he a 'she'? he- she- they- didn't remember the life before all of this...) was just a regular person, as so he thinks, he didn't remember much of his actual past life. Just that he was human and..just normal.
He didn't really expect to die and reincarnate, again and again and again and-
Well, his reincarnation just repeated, over and over and over and over and over....
Well anyways, he found it a bit ironic. why? well, he'd never thought that reincarnation was a thing, and that he've been practically daydreaming about it in his past life.
But he was envious. Just slightly, he didn't wanna be rude, besides, other people aren't experiencing what he's experiencing. If they don't know his problems, that's fine.
That was fine, at least they didn't have to die so gruesomely or lonely everytime they die. And at least they didn't have to wake up, knowing that this was a new life and that the people around you didn't know you weren't yourself as a whole.
That was fine, at least THEY didn't want to die one final time everyday.
That was fine.
Right...?
Series
- Part 1 of Repeated Reincarnation