1 - 20 of 15,747 Works in Frisk (Undertale)
Navigation
Listing Works
-
Tags
Summary
Frisk and Leo (the Bravery SOUL human) have been friends forever, since they were babies. Now, the two 10-year-old children are drunk, chubby and currently at the bottom of a mountain in an underground civilization of monsters...but a True Reset says that this will be a first for both of them, so it's up to two drunk kids to guide themselves back home - without dying, that is.
(DISCLAIMER: DUE TO LACK OF INFORMATION ON THE OTHER FALLEN HUMANS, MOST STUFF LISTED HERE ABOUT THE BRAVERY SOUL HUMAN, WHO I'M CALLING LEO, WILL BE MY PERSONAL INTERPRETATION. DO NOT TAKE ANYTHING LISTED HERE AS FACTUAL INFORMATION ON THE BRAVERY SOUL HUMAN).
CW: Drunk Children, Fantasy Violence, Partial Nudity (not shown or described), Minor Weight Gain Elements.
Series
- Part 1 of Undertale: Partners AU
-
UDY on the Surface by CommanderBullet
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
25 Oct 2025
Tags
Summary
It's been a few years since Monsters returned to the Surface and lots of things have changed... Accompany your favorite characters from Undertale, Undertale Yellow and Deltarune as they try to manage their everyday responsibilities and go through a few wacky adventures while at it in this slice-of-life crossover AU.
-
Adventure Tale by Kaboom91
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Adventure Time (Cartoon 2010)
25 Oct 2025
Tags
Summary
After countless runs, something goes wrong, and now humans and monsters alike have been pulled into a strange new land with its own rules and its own dangers. Come Along With Me for the crossover nobody asked for, its ADVENTURE TALE!"
Series
- Part 1 of Adventure Tale Collection
-
It Takes A Village by DiamondDeputy (EllaMayLowell)
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
25 Oct 2025
Tags
Summary
All Clover wanted when they entered the Underground was to find the missing children. Instead, they found a legacy of pain and hostility that helps no one. They can’t be sure of what they should want.
All Clover wants now is to live peacefully with their friends, perhaps excluding the one that wanted to kill them. But she’s far from the only one: a human in the Underground is only good for their SOUL. They can’t be sure they’ll ever get what they want.
It only takes seven to free all of monsterkind. But in the meantime, the Royal Guard is on the hunt, Kanako’s status is still a mystery, and Clover’s absence is felt back on the Surface.
(Or: Clover lives AU, and the dynamics and conflicts that follow)
Series
- Part 3 of Ella-May's UTY Retelling Collection
-
Diverging Paths - Start of HOPE by YellowSaga
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Undertale (Video Game), Celeste (Video Game), Cuphead (Video Game), Shovel Knight, Hollow Knight (Video Games), Dead Cells (Video Game), Hyper Light Drifter, OneShot (Video Game), Five Nights at Freddy's, Friday Night Funkin' (Video Game), Indie Cross (Web Series), SCP Foundation, Battle For Dream Island (Web Series), Deltarune (Video Game), Persona Series, Sonic the Hedgehog - All Media Types
25 Oct 2025
Tags
Summary
A fallen human
A fallen child
6 lost souls converge into one.
8 souls start the beginning of HOPEVigilantes rise in a place they should not be.
Rifts torn.
The Sun Lost.
But still they have HOPE.One echoes throughout the halls.
One Flower to rule them all.
The world is their plaything, but they will not fall.
The World Refused.
The World has HOPE.
(Hello everyone, this is YellowSaga, and thank you for reading or even just considering my fanfic, this is my first work so constructive criticism is appreciated and I will rewrite chapters if I have to, anyways, hope you enjoy and thanks again.)
Also I will try to update weekly or bi-weekly, but I can't make any promises, other than this definitely won't be abandoned, it will be on hiatus at worse.Also there may be major or minor spoilers for all the above fandoms and possibly others (I couldn’t fit all the characters) found in the notes chapters, you have been warned.
Series
- Part 1 of Diverging Paths - Series
-
Tags
Summary
The thing about soulmates is, no matter what pries them apart, they always...always find a way back together
Chapters 1-3: Prologue
Chapters 4+: Main Story
*This is a rewrite of I Have The Power of Gaster AND Anime On My Side. Same concept, with a bit of a serious feel.*
**Please be aware that this is not like my usual reader-inserts!! This story is in 3rd person pov, very vague description of a female reader. Unnamed (Pet names only). No use of y/n, y/e/c etc.**
-
Tags
Summary
Eh, this year Undertale has gained a bit of popularity again, thanks to Deltarune Chapter 3–4 and the 10th anniversary. So here’s my personal AU.
Series
- Part 1 of My au situation
- Language:
- English
- Words:
- 852
- Chapters:
- 1/1
- Hits:
- 10
-
Tags
Summary
You, the reader, in this case Bea, are obsessed with Undertale, and a short skeleton. But once the monsters break the barrier and publicity spreads of their arrival, it's suddenly pertinent to keep the monsters from ever finding out that their lives were a video game. You still play the game avidly, despite the unknown effects; however, when a certain pair of skeletons become your roommates, you discover pretty disturbing things about the game you're playing. However, will you keep playing the game under wraps in hopes Sans will never find out? Or will you be forced to give it up?
-
Tags
Summary
Sans has seen it all. Every reset, every route, every ending. The world keeps turning back on itself, and he's the only one who remembers. While others laugh, dream, and fight like it's the first time, he carries the burden of knowing it isn't the first time.
With each familiar face and every repeated moment, he begins to wonder if only this time would be different. His hope keeps growing and shrinking every time. Maybe the human chooses kindness. Maybe his brother's smile will stay safe. Or maybe it's just another game he's destined to lose. Still, he keeps going, for his brother, for the chance that maybe, just maybe, this path leades somewhere else.
-
Tags
Summary
Life is monotonous and dull, but it’s okay. You’re fine.
Assignment after assignment, test after test, meaningless conversation after meaningless conversation. It fills the void like a flitting firefly in the smoggy night sky, a brief flash of light— followed by an endless expanse of nothingness.
That’s okay. You’ve grown accustomed to it like a goldfish stuck in a glass bowl. You swim, back and forth, over and over and over again until you can’t anymore. It keeps you occupied, distracts you from your lonely, miserable existence.
Until you meet someone who simultaneously fills the void, and drags you so much deeper into it.
—————————————————————————-
Underfell Sans x ReaderA story about the woes of young adulthood. Includes themes of abusive relationships, inappropriate age gaps, mental illness, and substance abuse.
- Language:
- English
- Words:
- 11,051
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 27
-
Tags
Summary
_.;⊛;._
Após serem trancafiados em um subsolo completamente desconhecido e repleto de mistérios e abismos perigosos, os monstros puderam finalmente sentir o gosto da paz. Porém, para os humanos, a herança da guerra se manteve e espalhou-se por toda a superfície, graças à ganância dos reis, trazendo morte e destruição para os mais fracos.Frisk, uma pobre criança assolada pela guerra em que nasceu, fora obrigada a fugir de seu vilarejo destruído para o Monte Ebott, mas, por causa de um descuido - ou talvez obra do destino-, teve sua história ligada às dos monstros e de seu passado.
Sua vida nas mãos daqueles que juraram vingança à sua espécie. Como tudo se desenrolará no fim?
_.;⊛;._
"✞⚐👍☜ ☠✌⚐ 🏱⚐👎☜ ☞🕆☝✋☼ 👎⚐ 💧☜🕆 👎☜💧❄✋☠⚐"
"Jamais..."Obs cronológica: Esse universo alternativo se passa antes de Lewstale (uma outra au minha) e os personagens que nela aparecem ainda não tiveram contato com nenhuma au.
_.;⊛;._
Universo alternativo de Undertale (by Toby Fox)
As capas dessa história, tal como a história em si é de minha autoria. Tenha uma boa leitura. :)
_.;⊛;._
- Language:
- Português brasileiro
- Words:
- 36,816
- Chapters:
- 3/11
- Hits:
- 17
-
Dualtale AU: Two sides of truth by ED_Soul
Fandoms: Undertale (Video Game), Underverse (webcomic)
25 Oct 2025
Tags
Summary
Description:
This story is based on the distant and little-known Dualtale AU,where nothing is as simple as it seems. In this world, unlike the original Undertale, monsters were never trapped underground. But what was the price for peace between humans and monsters? And how is it connected to XGaster, when these events unfolded long before the X-Event?
(Features characters from Underverse and Undertale,adapted for this story.)Author's Note:
In the Dualtale AU,the famous rule "Kill or Be Killed" is replaced by another:
"Speak out, and you will be silenced."
This is a universe built on lies and dark secrets that everyone holds.Every character has their own agenda and their own rules and it's better not to try and learn them.Series
- Part 1 of Dualtale AU: Two sides of truth
-
A Future Without Them by Baddrummer
Fandoms: Deltarune (Video Game), Undertale (Video Game)
25 Oct 2025
Tags
Summary
Years pass. People grow. The world moves on without you. The Angel grew content with that for a while. It still hurt whenever they thought of the world that had long banished them, but something new pulled them out of the depths. Now, the Angel walks amongst friends who swear that they will not be banished. Kris, Susie, and Ralsei mean everything to them. Maybe this time, their banishment doesn't have to be as set in stone as they thought.
The Roaring comes. The light falters. Everyone falls.
A desperate connection is established in an attempt to save what remains of the Angel. If they fall, all hope will be lost. The world that banished the Angel long ago has forgotten them, but they have not forgotten it. This connection will have to be enough. Even if the rules have changed irrevocably, the Angel's one goal remains the same: Find them.
Series
- Part 2 of Clawing Toward What Hope Remains
-
Tags
Summary
Chara was supposed to die ages ago, but when Asriel refused to claim Chara’s soul they find themselves living in a half alive state, only perpetuated by Asgore’s desperate attempts to keep their child alive.
But a seventh human soul has fallen, and this one may be the cure to finally saving them. -
Timeless Justice by TheDoctorWD
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
25 Oct 2025
Tags
Summary
After countless resets and endless repetition.. something has changed. The timeline has began shifting, changing its path for the first time in a long time. A new path Flowey hasn't seen before.
Well, it might take Clover longer to reach Asgore but Flowey has all the time in the world after all. And seeing something new finally happen has piqued his curiosity. Drawn in by the unfamiliar, Flowey watches with morbid fascination as Clover is not able to give up his soul this time. Encounters shift, monsters react differently, and the world itself begins to remember things it was never meant to.
Events shuffle. Characters act out of turn. Rooms appear where there were none. And for the first time in countless resets, Flowey doesn't know what comes next. Clover's fate is uncertain. Though Flowey knows he will get those human souls, no matter what.
Series
- Part 1 of Fractureverse - UT/UTY/DR
-
Fanart of fics I like by Froggy_bot
Fandoms: Undertale (Video Game), Original Work, Life Series | 3rd Life SMP Series, SCP Foundation
25 Oct 2025
Tags
Summary
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!!!
-
Tags
Summary
TW: Suicide Idelation, Depression Implied child abuse/neglect so if theses thing trigger you dont read
This is an Undertale AU developed and written by me , so here's a brief summary of what happens in this AU after the players/frisk's 18th's genocide run, though this time in the judgement hall everything seemed a bit different like.. some things weren't there when they should've been. Following this during Chara's Confrontation as they were about to press Erase, Frisk pressed reset at the same time going back in time way back, something that shouldn't have happened in the first place that will now forever mess with the game files.
-
Hopes, Dreams, And DELTARUNE, Book 3: TV World by Dragonsrule18
Fandoms: Deltarune (Video Game), Undertale (Video Game)
25 Oct 2025
Tags
Summary
Following Frisk's vision from the mysterious Doctor W.D Gaster, Frisk, Susie, and Ralsei enter the home of Toriel Dreemurr, but instead of finding the Knight, they find themselves contestants on the Dark World's number one television show, TV Time. The gang form a friendship with the friendly and lonely TV host, Tenna, but sinister plans are lurking backstage. And the Knight still waits, ready to strike.
Series
- Part 3 of Hopes, Dreams, And DELTARUNE
-
Tags
Summary
Sans was starting to feel like there was a little too much on his plate.
With everything going on–the monsters living on the surface now, the angry backlash from the human city, some weird creepy dreams he wasn’t going to acknowledge anytime soon, and trying to work on something that would stop the resets entirely, all the while he still kept up with supporting his brother in his work of being a monster mascot–Sans would say he was completely booked. In fact, he was basically a full library at this point.
Oh, and then there were the skeletons that looked disturbingly like him and his brother that started showing up out of nowhere. That was happening too.
And they sure as hell were not as friendly as Sans would’ve liked.
Or,
Sans and the other monsters are on the surface now, when different timelines suddenly begin converging into his and start spewing out alternative versions of him and his brother. The world was apparently ending, but, hey, what else was new?
-
Tags
Summary
"Long ago… a child fell into the Underground."
They faced monsters.
Made friends.
Survived impossible odds.
Fought. Spared. Forgave.
Even when the world told them not to.A queen of monsters…
A skeleton of greatness…
A captain of honor…
A robot made to kill…
A king with a broken heart…
A soulless plant…
A god of Hyperdeath…And yet…
They showed mercy.
And through their DETERMINATION…
They broke the barrier.
They set everyone free.But that was only one story.
Now, the child walks into a new world…
A world of Skullgirls.
Here, pain repeats.
Wishes corrupt.
Hope turns to dust.The cycle continues:
A wish is made.
A Skullgirl is born.
And the world bleeds again.People fight to survive.
Others fight to forget.
Some fight… just because it’s all they know.Can they change hearts warped by despair?
Or will even they…
Give in?This world is cruel.
But like before…It’s up to you.
Will you break the cycle?
Or will you become a part of it?
The choice is yours.
(But remember... you were filled with DETERMINATION.)