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Once fallen, they never return. by RottenFl4wers
Fandoms: Undertale (Video Game), Mahou Shoujo Madoka Magika | Puella Magi Madoka Magica
02 Jul 2025
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After the war between humans and monsters, the world forgot magic — until the underground became home to those whose souls reflect both light... and hatred.
What path will they choose — pacifism, vengeance, or oblivion?
Kindness may fade into apathy.
Determination may rot into indifference.
And magic... may become a curse. -
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The First deemed it their job and so the Second continued it without hesitation. They called themselves River until the others knew them simply as the Riverperson.
One word to define what they were.
There had been other names - ones of all lengths and sounds from up above - until he or she became they - the Riverperson.
They were just they.
I DO NOT OWN UNDERTALE!!!!
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Ten years have passed in the Underground. Ten years since Dr. Gaster took his sons Sans and Papyrus out of his lab, ten years since they moved into Snowdin town. Since then, more human souls have been collected. The Underground finds itself once again in great predicament after a child named Frisk falls down, unwillingly bringing a psychotic godlike creature along with him. As the Underground is threatened by destruction and mass Genocide, the cast must uncover a dark truth in a forgotten past and save the world before it is too late.
This fanfiction is now officially cancelled, there is only a brief summary for the ending, please be aware of that if you want to read.
Series
- Part 5 of Handplates Determination
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In Hopes and Dreams by Dicebo, paradoxcloned
Fandoms: Undertale (Video Game), In Stars And Time (Video Game)
27 Mar 2025
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The Universe and The Change God create a baby and ‘gift’ it to Mirabelle and Siffrin. Years later, that baby makes a wish and ends up underground. As they try and break the timeloop they're stuck in, with some help from family an friends alike, they're going to have a time of all time!
Or, me and my friends Undertale x ISAT au that litterally just started as me messing around with wishcraft.
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You fall after genocide. It’s been years, perhaps centuries since the final monster breathed their last.
No one is left.
You venture forth with only ghosts and memories to keep you company as you slowly lose your mind in the empty Underground.
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B-12 es una flor genéticamente alterada impulsada por un alma humana la cuál vive dentro suyo. Tras pasar doce años atrapada bajo un grupo de científicos es que aprovecha un accidente en el laboratorio y escapa hacia el bosque, llegando al Monte Ebott.
Allí su objetivo va a ser sobrevivir dentro de un submundo de monstruos, marcado por un devastador evento ocurrido años atrás. Esta situación termina siendo un motivante para conectar consigo mismo tanto física como espiritualmente, así cómo un disparador para mejorar la situación actual del subsuelo.
- Language:
- Español
- Words:
- 14,172
- Chapters:
- 5/?
- Hits:
- 13
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My first offering to the great Undertale fandom, ft. my take on the Genocide Judgement Hall Battle
please dont hurt my family
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You never wanted any of this. All you wanted was to chill at home, but the universe clearly had other plans.
Series
- Part 2 of Play Your Part
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You're a Hero by Huh_What_Nani
Fandoms: Undertale Yellow (Video Game), Undertale (Video Game), Undertale Yellow
23 Oct 2024
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You were on a mission. You never started any fights, but you made sure you ended them. So what if that made you a murderer? You would get your revenge.
Maybe you'd let yourself be distracted by a certain sheriff. But only for a moment.
Maybe he'd make you wish that things had turned out differently.
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Frisk entame une route génocide
Mais au fur et à mesure de ses massacres, le nuage de poussière qu’iel laisse derrière ellui commence à l’étouffer
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Frisk was overjoyed as they had finally found their true ending. Though, there were a few minor changes to what one might expect. Frisk had developed a deep bond with Toriel and Asgore, even more so than with the other monsters. However, their heart truly belonged to Sans and Papyrus. The conflicting personalities of the brothers had always charmed Frisk, the constant equilibrium of dry puns and enthusiastic banter resonated with them. At first, Sans was unsure if he was ready to take on the role of a parent, but with the encouragement and reassurance of both Papyrus and Toriel, he ultimately decided to give it a try. Toriel, in particular, noted that Frisk had made it through the underground thanks to Sans's protection and even offered to "babysit" Frisk whenever he felt overwhelmed.
But as with all stories, happiness is fleeting, and conflict between monsters and humanity continued to rage on. Politics and oppression reared their ugly heads, and Frisk's unknown illness added to the inner turmoil they were facing. Will Frisk be able to rise to the challenge?
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Rated #1 (at some point a while ago) in the #Charisk tag on Wattpad
"Determination" Is a episodic story based on the events of 2015's hit game: "Undertale".
Takes place in my Proem!Tale UTAU timeline.This is a remaster of another story under the same name I have on my Wattpad. Please note that THIS is the definitive version, and further books in the series will refer to THIS book for cannon. The information in the other book IS still generally cannon, but this is how I want to present it.
This is a full-length fan-novel spanning the entirety of the True-Pacifist route of Undertale. So this is going to be a very long story, and this is only book 1. Don't expect to be here for a quick read.
Trigger warnings: A lot.
Series
- Part 1 of Proemtale AU
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(SPOILERS FOR UNDERTALE'S GENOCIDE ENDING AHEAD! If you have not completed the game, I recommend doing so first.
I also interpret Chara and Frisk as girls. This fic also contains Charisk. If you don't like it, don't read it.)
Chara wonders why Frisk continues on her path of destruction over and over again, just to get the same result each time. Recreating and destroying this world, with no end in sight. What could be her reasoning?
A kiss.
Frisk wants a kiss.
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Sans made a promise with Grillby in the genocide, both monsters must have already known that Sans would never come back once he has gone.
However, due to DETERMINATION, Sans couldn’t keep himself from not moving anymore, while Grillby had known he can’t convince Sans. -
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ORIGINAL UPLOAD DATE: 2022-04-17
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Basically, just Frisk breaking down. Angst. Big angst.Read tags lol
Series
- Part 8 of FICS FROM MY OLD ACCOUNT
- Part 18 of CHARA'S FANFICS...I GUESS?
- Part 6 of CHARA'S UNDERTALE FANFICS
- Language:
- English
- Words:
- 1,016
- Chapters:
- 1/2
- Kudos:
- 8
- Hits:
- 265
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History Repeat Itself by IchiroTheHallow
Fandoms: Yu-Gi-Oh! - All Media Types, Yu-Gi-Oh! Duel Monsters (Anime & Manga), Undertale (Video Game), Yu-Gi-Oh! Session Zero, Deltarune (Video Game)
15 Dec 2023
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“ I’m The Villain “
“ When The Humans Betrayed Me; They Made A Mistake “
“ If You Hurt Him, I’ll KILL YOU… “
“ Azzy No- “
“ How Are They Here?! “
“ Pharaoh… “
“ Rai! “
“ You Think You Are Above Consequences “
Series
- Part 2 of + Mixing Fandoms Together +
- Language:
- English
- Words:
- 75
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 121
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Underage tag just in case even though Chara is like at least a hundred because of how long she has been dead for.
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True Character (正体) by GHOST_CHARA
Fandoms: Undertale (Video Game), Mother 1 | EarthBound Zero | EarthBound Beginnings
30 Oct 2023
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After a glitched reset, instead of Frisk waking up at the beginning of the ruins per usual, a boy around their age was there instead. And they were now a ghost just like Chara.
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True Character - RINGO/Akali
https://youtu.be/3uR13RXlIqM?si=SzeQFvrRpcw0k52X
-A sequel to my One shot "Hyperventilation Dance ( 過呼吸ダンス )"!
Series
- Part 5 of CHARA'S FANFICS...I GUESS?
- Part 2 of CHARA'S UNDERTALE FANFICS
- Part 2 of Hyperventilation Dance series
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Cooked Shat (Smurf cat) by Supanovaniac
Fandoms: Undertale (Video Game), Les Schtroumpfs | The Smurfs
13 Oct 2023
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This is an au loose adaptation of the genocide route where Frisk is replaced with the Smurf cat from the memes told from sans' point of view.
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𝘍𝘳𝘪𝘴𝘬 𝘤𝘢𝘯𝘯𝘰𝘵 𝘤𝘰𝘯𝘵𝘳𝘰𝘭 𝘵𝘩𝘦𝘮𝘴𝘦𝘭𝘷𝘦𝘴, 𝘵𝘩𝘦𝘺 𝘢𝘭𝘴𝘰 𝘤𝘢𝘯𝘯𝘰𝘵 𝘤𝘰𝘯𝘵𝘳𝘰𝘭 𝘵𝘩𝘦 𝘦𝘺𝘦𝘴 𝘰𝘯 𝘵𝘩𝘦𝘮 𝘢𝘵 𝘢𝘭𝘭 𝘵𝘪𝘮𝘦𝘴 𝘫𝘶𝘥𝘨𝘪𝘯𝘨 𝘵𝘩𝘦𝘮 𝘧𝘰𝘳 𝘸𝘩𝘢𝘵 '𝘵𝘩𝘦𝘺' 𝘩𝘢𝘷𝘦 𝘥𝘰𝘯𝘦.
𝘈𝘭𝘭 𝘵𝘩𝘦𝘺 𝘸𝘢𝘯𝘵 𝘪𝘴 𝘵𝘩𝘦𝘪𝘳 𝘣𝘰𝘥𝘺 𝘣𝘢𝘤𝘬. 𝘈𝘭𝘭 𝘵𝘩𝘦𝘺 𝘸𝘢𝘯𝘵 𝘪𝘴 𝘵𝘰 𝘴𝘵𝘰𝘱 𝘵𝘩𝘪𝘴. 𝘐𝘧 𝘵𝘩𝘦𝘳𝘦 𝘪𝘴 𝘢 𝘨𝘰𝘥, 𝘩𝘦 𝘮𝘶𝘴𝘵 𝘳𝘦𝘢𝘭𝘭𝘺 𝘩𝘢𝘵𝘦 𝘵𝘩𝘦𝘮.
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Hyperventilation Dance - Nashimoto Ui
https://youtu.be/1mRvICojl20?si=98SOY3EVdpR_k1VN
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Frisk angstSeries
- Part 1 of CHARA'S UNDERTALE FANFICS
- Part 1 of CHARA'S FANFICS...I GUESS?
- Part 1 of Hyperventilation Dance series