A collection of Underswap oneshots brought over and refurbished from my old wattpad account, plus possibly new ones! Enjoy the humour, angst, and whatever else comes to my strange mind! Frisk, Chara, and all other ambiguous NPCs will use They/Them pronouns, including Monster Kid and Mettablook.

Frisk has Reset hundreds of times while searching for an ending that is just out of reach. When a run ends differently than any other, Frisk sees a chance to find the ending they truly desire and fulfill a promise they made long ago.

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.)

A woman trying to escape a fate of death and ended up falling through a hole in Mount ebott.Wary and Anxious of her situation in the underground,She must find a way to survive and leave.But...why were these monsters so gentle and nice?friendly?and why the hell did she find herself being too attached to one punny skeletons with hundreds of different versions of himself?

Frisk falls in the underground at a time where Asriel and Chara are still alive and is first found in the ruins by the latter. Frisk being a human, Chara considers them as a threat to monsterkind, especially once they discover Frisk has the ability to go back in time and erase the consequences of their actions. Can Frisk show to Chara that not all humans are as bad as they think ?

Something happens to stop the normal flow of a Genocide run. An anomaly appears...but maybe it's not the one you think. *Trigger warnings: there might be some violence/threats/feeling trapped and self-harm at some point

Red fue separado de su hermano menor a los seis años y fue internado en un Centro de Control dedicado a la experimentación biológica donde muchas crías mueren durante las investigaciones. Sin embargo, al ser un esqueleto, su nivel mágico supera los estándares entre otras especies de monstruos y termina convirtiéndose en un arma letal a los once años. AU War

"El jugador" ha muerto... Y ahora todos quieren JUGAR. En la peligrosa Ebott City, radica una constante inconformidad por habitar monstruos y humanos en un mismo lugar., desatándose conflictos delictivos que atentan con la vida de los habitantes. Sin importarle las advertencias de su madre, Frisk decide ir a la ciudad y tener su florería junto con su compañero y mejor amigo Flowey

Everything is nice and perfect in all Universes. But when Error and his possy decide to steal some Frisks, that's when things get bad. Read along as we watch these skeletons fight and try to get their soulmates back.

"The little girl just could not sleep because her thoughts were way too deep, her mind had gone out for a stroll and fallen down the rabbit hole." - A life of fear is not what Frisk ever expected to have. - Warning: this is a dark AU that tackles mature themes and is not recommended for sensitive readers.

[Fanfiction Underfell] Papyrus est dérangé par le comportement d'Undyne depuis quelques temps. La guerrière arrive en retard à tous leurs rendez-vous, en plus d'esquiver le sujet à chaque fois qu'il cherche à comprendre. Et puis, un jour, elle lui laisse le contrôle intégral de la garde royale et sort de sa vie, sans aucune explication. Papyrus refuse de rester sans rien faire.

Born into a life of cruel subjugation and confinement, a young child discovers that a different kind of prison might just become her safe haven. But nothing is ever that simple. With a deadline looming and troubles starting to pile up, a new friend with a lazy grin could be just what she needs right now. Multiple AU's. Slow burn. Female Frisk. Contains OC's. Eventual SansxFrisk

Mettaton and Luna go to visit the skeleton brothers, but Luna is nervous about meeting her uncle Gaster's brothers. Can Sans and Papyrus show her that she doesn't have to be afraid of them? Done as a request for paradise dazzleshine. :)

EXPERIMENTO NÚMERO 1987 ALTERAÇÃO DA LINHA TEMPORAL X INFILTRAÇÃO NA LINHA TEMPORAL X EXPERIMENTO NÚMERO 2015 CRIAÇÃO DE FISSURA YES EXPERIMENTO NÚMERO 2018 EM ANDAMENTO OBJETIVO CORE

He wanted to SAVE her, so he gave up his SOUL. She never expected to be SAVEd, to be LOVEd, to be alive. Yet, there looms another calamity in the Underground One none expected to rise again from the battlefield. Charisk Tales - Part II of IV

DON'T STEAL MY AU if you want to use it give me credit

Golden Quiche / Crimson Keeper specific universe. A 'Chronographer' is a title reserved for those with the power and authority to observe, manage, and record the annals of spacetime. They're the primary historians of this world.

"History books never tell the full story..." - Bete Noire

In a last ditch attempt to escape, Frisk, alongside her twin brother Harley, and their younger sister, run up MT Ebott and leap into the Underground. What they find from there is horrors untold, as the Twin's Tale unravels to become even darker than before. F!Frisk F!Chara M!OC F!OC. Genocide Route First, Original story after Pacifist, No Marty Sue, M for Violence

In a last ditch attempt to escape, Frisk, alongside her twin brother Harley, run up MT Ebott and leap into the Underground. What they find is not what they expect. Read as truths are revealed, enemies become friends, and the true threat to the Underground comes to light... F!Frisk F!Chara M!OC. Genocide Route First, Original story after Pacifist, No Marty Sue, M for Violence

Chara has fallen into the Underground and Gaster has found a way out of the Underground and expects The King and Queen to do what it takes to leave but he does not expect what The King and Queen will really do nor does he know The Human's arrival. Come and experience how Chara grows into their new home and how Gaster will try to ruin it. (Rated K plus for now may change to Teen.)

Looking for closure after finishing the game you write a letter to the characters. You never expected a reply.

This is my full AU on Killer Sans. Let me know if you want info of other Sans's or any other Undertale Character! Please note that this is MY AU not canon Killer Sans. My Killer DOES have some canon facts on him though!

And so it began. The SOUL that longed to rest on a bed of buttercups, under the sun Would do the last Fallen a favor, by ending their life as an offering To the ancient magic that locked Monsters on the Underground Charisk Tales - Part I of IV

"Third time is a charm", or so one would say. After their attempt at building Chara's SOUL, Frisk gave up life once more. Floating, guiding their own beloved in what should be a peaceful journey in the Underground. One last time, to SAVE them all. Charisk Tales - Part III out of IV