El primero en caer fue Determinación, huyendo de los humanos. Paciencia buscaba una salida. Valentía salvó a alguien. Perseverancia buscaba a alguien. Amabilidad fue engañado. Integridad se perdió. Justicia pagaba los errores de otro. Luego, llegó el octavo niño, la octava alma, el regreso de Determinación y la más poderosa de los siete. Esa es Frisk. (Quinto arco: Alyssum).

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The Laboratory Complex of Dr. W.D. Gaster, which exists outside of time and space, is gathering a new group of human test subjects for a large-scale experiment. Who is destined to become something more than just "human"? And what price will have to be paid for it?

For hundreds of runs, Frisk has tried to find a way to save Asriel. After so many failures, she finds hope in the notes of one W.D. Gaster. In order to get what she wants, she must venture to the Void to alter the code of the world. But when she comes back, she will not be the same.

December 25, 2015 Mysterious black briars destroyed the whole of Ebott. Every inhabitant was lost except for a pair of brothers. Not long after, a tragedy claimed the younger one. Since then, the sole survivor did everything he could to prevent the calamity from spreading further.

Frisk comes across a slave owner beating up a skeleton monster with a gold tooth. (Based on the premise of "Slavetale" by V mum) (cover art by Pandanii)

Cheyenne et sa petite sœur, Neelam, prennent leur indépendance après quinze années passées en famille d'accueil. La plus âgée ne réussissant pas à trouver un travail, Papyrus, leur charmant voisin, lui propose de surveiller son frère, Sans, atteint d'une maladie qui lui fait perdre peu à peu la mémoire. Un travail en apparence facile qui pourrait bien être plus trompeur que prévu.

What if the Multiverse died? What if by the miracle one Papyrus would survied the destruction brought by greedy individuals from his Multiverse. What if thanks to his Savior he would become bascily a new Master and God to the rebuilded Multiverse. If you want to know, join us on the adventure of the Last and the First Papyrus in the exsistance, in this tale of Charta.

What if two humans were in the Underground at once? What if one human was DETERMINED to stop the other? What if they could both SAVE? What happens when an Unstoppable Force meets an Immovable Object? When a certain scientist pulls enough of himself together, he finally finds a way to stop the destruction of his world. (Undertale AU. Rewrite of DT.)

After taking some time off, Blueberry Sans comes back to his recording software to record his gameplay of The Mortuary Assistant. However, some spooky things happen and now he and his brother need to figure out how to survive the game. Will they make it out of the game?

Cross is not okay

Cette fanfic ce déroule dans l'AU d'Undertale "Disbilief Papyrus". Au cours du combat à Snowdin entre le protagoniste et Papyrus, Sans s'interpose et prend le coup mortel à la place de son frère. Il se téléporte avec son frère ailleurs et meurs dans ses bras, par la suite Papyrus ne réapparaitra pas jusqu'à ce que le protagoniste ne sorte de l'Underground, l'appelant à la fin...

just a few one shots for my OC of ErrorSans, Sol Reapa. one of the few known as a traveler. that means Sol can move though the void between multiverses. I have expanded this to an ability to move around the entire multiverse, regulating undertale AU multiverses to a 'pocket verse'. this way it is easy for him to go to other fandoms. so large crossovers will happen.

Sans becomes a surrogate mother for Toriel and Asgore because he is their most trusted friend but when Toriel asks a ten weeks pregnant sans to go to the PTA meeting that she can’t make it to one day. What happens when a grumpy and pregnant sans joins the PTA and what about the new underfell monsters that showed up a week ago?

"Long ago, two races ruled over Earth: Humans and Monsters." One race feared for their strong souls, the other for their magic, and the mages caught between them feared for both. All silently knew that war would be inevitable. The only thing that mattered was surviving it. One crimson mage understands that well, and is determined to keep herself and those she cares for alive.

What if there wasn't AUs but instead they were all personalities in Sans's multiple personality disorder? Well that is the reality Papyrus and the others are currently living in though they've gotten used to it. With the arrival of Frisk some things may change for all of them. Could she be the key to figuring out how to help Sans? Or will that be the surface? Rated M for themes

10 years after the barrier was broken, 1 year after the first attempt at peace talks, there is a young woman who is willing to sacrifice her quiet life after 10 years of remaining in the night world of humanity to make sure things go peacefully. However, where there is Light, there is always Darkness.

Asriel didn't deserve this. To be back, to be nearly himself again, to be able to feel. But it was only because of the souls inside him. When he was about to release them, a voice made him question everything. The human children who died because of the fury he had caused wanted to live. He would right that wrong, no matter what. But bringing them back wasn't as simple as he thought

Asriel becomes a Skibidi Toilet!

Все знают хранителя позитива. С улыбкой и бесконечным альтруизмом. Надолго ли хватит его доброты? Не пойдет ли он по стопам брата в попытках его одолеть?

Han pasado más de diez años desde que Frisk liberó a los Monstruos del subsuelo y revivió a los principes Chara y Asriel Dreemurr. sin embargo nada de eso nos interesa, puesto que hoy Chara y Sans tendran una cita para celebrar su aniversario donde reviviran algunos recuerdos. no esperen mucho en mi primer fic y si no me equivoco es bastante cortito, aun así espero que les guste.

The monsters never ended up in the Underground, thanks to a person who was half-human, half-monster. She and Sans keep watch for those foolish enough to enter the magical forest surrounding Mt. Ebbot. What happens when Frisk and Chara enter those same woods?

Rodrigo, who just began playing Undertale for the very first time, has to find out which way is best as he ends up in the actual Underground. But when a Fallen Child's soul inhabiting Rodrigo's body tries to drive him to violence, will someone help guide him down the right path? Contains spanking, and minor mention of death, you don't have to read if you don't like that.

Six years after the monsters emerged to the surface, Frisk is busy with their life of being their ambassador. After an unexpected tragedy, they're soon battling to not just prevent a civil war, but save every timeline.

For hundreds of runs, Frisk has been trapped in their own body, watching as Chara and Sans kill everyone they love, unable to do anything. But on the next run, Chara mysteriously vanished. Now Frisk must work to stop Sans from killing everyone and fix things. But can they do it, or will they be stuck in a never-ending nightmare?