1 - 20 of 9,646 Works in Sans/Sans (Undertale)
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After nearly a year of serving beneath Nightmare, Killer has learned there are places within the castle no one enters and questions no one dares ask. When his beloved cat insists on leading him into one such untouched corner, idle curiosity gives way to something far more unsettling.
Hidden within the abandoned heights of the castle, lost to the multiverse for ages beyond counting, rests an ancient chest containing the last fragments of a childhood time had failed to erase. With every page Killer turns, the line between the monster he knows and the child who came before begins to blur.
As Killer pieces together a past buried beneath centuries of silence, he is forced to confront a truth that threatens everything he knew about the king he serves.
Some secrets are buried because they are shameful.
Others are buried because surviving them demands it.
And some wounds, no matter how carefully hidden, never truly stop bleeding. -
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A bittybones breeding facility that specializes in parthenogenesis. It takes bitties otherwise lined up for being put down, and receives one of the rarer kinds... it's a nightmare
the focus in here is on big bellies. do not expect real classical sex from this. they do not have genitalia.
Series
- Part 1 of Undertale Puffs
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Is it the emotions that make a human human, or is it the ability to think?
Or, in other words
A bit philosophical fic for a fandom I presumed dead :3- Language:
- English
- Words:
- 1,044
- Chapters:
- 1/1
- Kudos:
- 11
- Hits:
- 26
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Fanart of fics I like by Froggy_bot
Fandoms: Undertale (Video Game), Original Work, Life Series | 3rd Life SMP Series, SCP Foundation, Fullmetal Alchemist - All Media Types
31 Jul 2026
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This is just going to be a dumping ground for all the fandom related art I do. Some might be of fanfics, others may just be an AU of my own creation.
Comments and kudoses are very appreciated!
Requests are open!!!
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Fill The- Wind in Your Hair As You Run! by Logically_Lethal for MoonMoom
Fandoms: Undertale (Video Game)
31 Jul 2026
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Geno woke up today and decided that he was making his problems everyone else’s too.
Geno didn’t need much, but the one time he was being expressly vocal about his needs, he got this shit it was infuriating.
‘It’s only a session.” “We won’t be doing anything explicit." “This is a part of life here; it's normal.”
He can only hear Reaper downplay his discomfort so many times before he snapped back, even if it got him nothing but punishments. It didn’t help that Reaper threatened him when he expressed how this is not helping.
He needed to teach Reaper a lesson.
So Geno did what he did best.
He got quiet and plotted.
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“Poor thing,” he whispers, leaning down to press lithe kisses across the expanse of Nightmare’s forehead. “Must be so painful, hm?”
A whine leaps from Nightmare’s throat as Error's hips grind just right— just enough to remind him of the heat branding his bones. All at once, embers lick at the marrow, and he tosses his head to the side in peril.
Each jerk of Error’s body lightens the pressure. Each plea for more rewards him with his antidote. Error remains his savior again, again, and again.
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Or, Nightmare hid his heat for a bit and was in so much pain when Error found him that four rounds later has his brain mushy and consumed by everything that is Error.Series
- Part 3 of Errormare NSFW Oneshots
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Dream and Nightmare lived mundane lives. Dream was happy with the life they lived, he had friends, his brother, everyone loved him...his life was perfect.
Nightmare was jealous. who wouldn't be? His brother's life was perfect. Just once he wanted to feel the same joy his brother felt everyday.
One night, giving into the childish urge, he made a wish upon a star... for a friend...childish as it was he just wanted it to come true... he just wanted a friend...
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!!!This story contains 18+ NSFW content!!! Please keep this in mind while you read!
Red wakes up in an AU that's not his own. After being taken in by Sans, his adventure begins. Drama, violence, silly insults, actual serious moments, romance, and more!
I don't know what tags to use, so tag suggestions are welcome! -
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Y/N's life in the village is changed forever when a new monster enters her life... Soon everything starts changing and coming to light... The only problem is.... Everyone knows, but her....
(Summary Updated on May 28, 2026)
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Cross and Nightmare have breakfast after sex
- Language:
- Español
- Words:
- 1,408
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 47
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Reaper is the king of vampires, and tonight he decides he's rather hungry for some delicious mortal blood. He's in the perfect mood for a date, so he brings his husband along to join him for a feast.
Series
- Part 1 of Wydeyy's afterdeath stuffs
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Several years after Error’s suicide, the Stars and the Council finally realise just how wrong they were about him. Their multiverse is falling apart. And so they decide to bring in an alternative version of Error from another multiverse.
However, they fail to take into account that he has absolutely no desire to fulfil his duties — he does not want to destroy. Even after persuasion, threats and manipulation, he does not change his mind.
Well then. For the sake of the multiverse, they were prepared to do anything. Even to turn the stolen destroyer into a virtual slave, who, under very real threats of a fate worse than death or torture, submits to their will.
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La realidad no es más que un tejido fino sobre un abismo de estática, y alguien —o algo— ha comenzado a tirar de los hilos.
Tras la aparición de una fractura en el tejido del multiverso, lo que comenzó como una misión de rutina se ha transformado en un descenso a la locura. Mientras los guardianes del orden y el caos intentan mantener una fachada de normalidad, los cimientos de la existencia comienzan a resquebrajarse. Fragmentos de recuerdos, lealtades fracturadas y una conexión olvidada y rota amenazan con borrar la línea que separa la identidad de la aniquilación.
Dream y Nightmare custodian un pacto de silencio que podría salvar —o condenar— a todo lo que existe. Pero en el silencio, algo los observa, y la sincronía que comparten empieza a hacerse notar más allá de su voluntad.
Todo vínculo tiene un precio. Y en un multiverso donde la verdad es el enemigo, la ignorancia es el único refugio que queda.
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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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EBOTT CITY, 191X
Three years have passed since the two districts of humans and monsters reunited, leaving their differences, which once resulted in a civil war, behind in order to strive for a brighter future together.
In the area of Roadin, you can find a little stationery shop called "Doodlesphere", owned by a certain skeleton monster: a carefree, cheerful artist and storyteller named Ink. Despite leading a relatively unexciting life up until now, his natural ability to run into trouble causes him to bump into Error one day, the so-called "Destroyer of Progress".
Because Ink is always having dreams about other universes with Error being his archenemy, the artist decides to follow said businessman out of curiosity, only to realize that he and other "outcodes" are experiencing similar dreams that seem to be connected with one another.
So now what? Ink working together with the short-tempered Destroyer to solve this mystery sounds like a dangerous idea, right? Especially if you consider Error's relation to Nightmare's gang, the infamous mafia group which is causing restlessness in Ebott City right now...Series
- Part 1 of ÆTHERVERSE (Steampunk UTMV)
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“Does it make sense for Sans to kill his brother?”
“In what circumstances would it make sense for Sans to kill his brother? Does it make sense for Dream to kill his twin? Is the inverse true? Would it make sense for a little boy to die under the apple tree, only to be replaced by a being of pure malice, carrying the the same name and face? Would that make sense to you, Killer?"
The cold wind caressed their faces. The purple-clad skeleton sat in the dusty pile of snow, tears running down his cheeks. Killer saw the grief engraved into the other's features, and found himself, for the first time since their meeting, seeing Nightmare's face fully and clearly.
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A what-if about Killer meeting a Nightmare who didn't die in childhood, but was saved before the worst could happend. Follows the how's and why's of their relationship from Killer's point of view. A charming (I hope) side cast is included -
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In the aftermath of wars amongst the multiverse a new era takes shape. A Creator walks amongst their creations, providing hope to all. At least that's what it seems like on the surface. No one can really know the truth behind what Ink really was. A mistake.