1 - 20 of 15,232 Works in Frisk (Undertale)
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This work exists to host entries relating to my project Undersided! These may be continually updated without posting new chapters, as more material is added. I'll add timestamps for each edit to a given chapter.
This work is dedicated to the public domain.
Read Undersided on the website at https://vector-graphics.github.io/undersided/ -
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- Part 1 of UnderVanquish
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"They’re sitting in a bed of golden flowers somewhere far beneath the earth, and, as far as they can tell, for better or for worse, they’re decidedly still alive."
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Frisk climbs a mountain and inadvertently awakens an ancient terror sleeping beneath the flowerbed they land on when they fall. If by "ancient terror" one assumes the less-popular definition of "annoying narrator-ghost princet of monsterkind who is now, unfortunately, permanently stuck in their head."
Chara doesn't want to be awake. They especially don't want to be helpless in the back of a bloodthirsty human's head, watching them ruin the only home they've ever known with no power other than their voice to fight back with. Luckily for them, that's not what's happening at all. Unluckily for them, they may have to re-evaluate a few things about their worldview. Which, for someone as set in their ways as them, is not an easy thing to do.
(Then there's the matter of the weird flower, Frisk's unusual powers, and the Longest of Long Days the underground has ever seen.)Chara & Frisk no player AU true pacifist. Updates semiregularly from ~80 chapter backlog!
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- Part 1 of FUSEVERSE
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Deliverance From Self-Destruction by Agent_ArcticFox
Fandoms: Undertale Yellow (Video Game)
29 Jun 2025
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Alexander Koskinen is not a perfect man, but he’s lived his life to what he believes is the best he could. But after falling into the underground, that belief is shattered, and the guilt that has built up over the years has come crashing down, a weight he can no longer bear alone like he has for so long. Now it’s up to Chujin Ketsukane, patriarch of the Ketsukane household, to help pick up the pieces of this lost soul’s life, lest he be consumed by the past that’s been haunting him for all these years.
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- Part 1 of UTY: Absolution
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Collection of prototype art, production art, fanart, commissions, and other images for The Golden Quiche setting.
Created because the internet is getting more and more difficult to keep track of old images.
Also, spoiler design reveals ahoy. Checking this art out presumes that you've already read the story.
Currently WIP. It'll take a while to compile the details.
Warning: Massive file sizes. Data plans beware.
Series
- Part 7 of Golden Side Orders
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Post vengeance route Clover refuses Frisk the access to Ebott by Kittany_the_Fox
Fandoms: Undertale (Video Game)
29 Jun 2025
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Just an interaction I thought would be interesting !
After killing Asgore and freeing the 5 human souls, Clover came back to their old town. They grew up, and today, guard the entrance to mount Ebott to avoid anyone falling in.
But then Frisk happens
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20XX, the peak of Mt. Ebott. Several monsters emerged from a massive, hidden network of caves known as the Underground. The first few glance at a world that could have been, Frisk thought, hoping their soul would not allow another do-over. They wanted this to be over, as much as any other creature would, were they to know what truly happened all this time, or better yet, all these times.
Frisk just had to go back. Talk with everyone one more time before their soul would fade, and as a result, this world too would meet its demise. A world darker than darkness, where nobody can be found. Unless..
This is my take on what happened such that the world of Undertale became the world of Deltarune.
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Nightmare had been so kind.
He'd said all the right things and done everything perfectly to gain Dream's trust.
When had the proposition turned from the possibility of trust to the promise of power?
Or: Dream gets an invitation to stay at Nightmare's castle...forever!
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The King of Spades really hates the Lightners. They completely abandoned all the other Darkners, they locked him away, and they turned his son against him. He hates them so much, he swears he'll kill them
Hate quickly fades away when confronted with relics of his past, and he has to ask himself, is killing all the Lightners truly what he wants?
In other words, Spade King is having a mental crisis, Kris is suffering, Ralsei is keeping secrets for their protection, Noelle is becoming stronger, Lancer is trying to connect with his dad, Queen is trying to make up for what she did to Spade King, the Soul and Spamton are being pieces of shit, Jevil is somehow becoming sane, and Asgore wants to bang Spade King
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- Part 5 of The Mamamango verse
- Part 4 of Mamamangoverse main fics
- Language:
- English
- Words:
- 855
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 56
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- Language:
- English
- Words:
- 807
- Chapters:
- 1/?
- Hits:
- 5
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Summary
In which Clover falls underground more times than anyone really wants to count.
They only have to die one time, and the universe - and someone else - seems to be trying as hard as possible to make that happen.
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Why are they so damn good at living?!(au premise - frisk and clover fall at swapped times. unfortunately for everyone, frisk lives.)
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- Part 1 of Fallswitch
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Three years ago, a brother left his sister to search a mountain that no human has ever returned from.
Three years later, the sister, desperate for answers, follows her brother's footsteps.
The two meet again, but the result is likely the most hectic two weeks of their lives. And one of them has already lived an eventful life.
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Parental Union by DemonicPrince23
Fandoms: The Owl House (Cartoon), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Murder Drones (Web Series), Phineas and Ferb, Undertale (Video Game), Deltarune (Video Game), Five Nights at Freddy's, Harry Potter - J. K. Rowling, Bendy and the Ink Machine, Star Wars - All Media Types, Undertale Yellow (Video Game), & More - Fandom
28 Jun 2025
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To my sister, assuming she finds this: PLEASE DON'T KILL ME! I saw the ship listed in the list of ships and was intrigued. I'm sorry.
To anyone confused: She and I know what I'm talking about. If she doesn't... Well, I'll survive for sure, unless I do something dumb and show her it. If she does... Well, I'll need to pray.
Credit for the idea goes to a Discord friend of mine, Voltage, who isn't a fanfic writer, but came up with the idea.
Credit for each individual fandom goes to their creators. I am none of them.
Credit for the story itself, however, is mine.
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Asgore demands all Royal Guardsmen to take down ALL humans!
But uh, Frisk is pretty much the only one down here. Thankfully, Frisk has some pretty peak skeletal figures to help them out.
- Language:
- English
- Words:
- 0
- Chapters:
- 1/?
- Kudos:
- 5
- Hits:
- 29
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Sick To Death (Of Me Chasing You) by CrossoverAU
Fandoms: Undertale (Video Game), Alice by Heart - Sheik/Sater/Sater & Nelson
28 Jun 2025
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Summary
Raine was sick. Really sick.
The kind of sick where, despite not knowing what she had, she knew she didn't have long left.
Her best friend Sans knew that too.
Not wanting her to live her last moments trapped in her house, Sans read her one of her favorite stories, Alice in Wonderland.
While chasing her through the pages, Sans learns that he loves her too much to let her die.
Will he be able to let her go or will he try to selfishly stop the clock?
Aka an Undertale/Alice By Heart crossover fic because I couldn't find one
Note: knowledge of Alice By Heart isn't needed to read this fic!
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Mezzo Soprano and the Barista by ReapingRose115
Fandoms: Skullgirls (Video Game), Undertale (Video Game)
28 Jun 2025
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Barista Frisk and Accountant Asriel decide to take a vacation and with a huge stroke of luck, good friend, regular customer and co-worker, Squigly had booked an expensive room that can fit two couples in the fanciest Hotel in New Meridian.
What hijinks could ensue from a Lunch Bet...?- Language:
- English
- Words:
- 7,059
- Chapters:
- 1/2
- Hits:
- 11
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A kid falls underground and they are DETERMINED to do the fastest pacifist speedrun ever, this of course becomes a problem for the narrator
- Language:
- English
- Words:
- 3,619
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 24
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Summary
Life in Hometown had always been quite; the small, sleepy, rural community had little to offer. For Ralsei Dremmurr, this feeling was compounded by a list of tragedies in his youth and years of being bullied. But when a spur-of-the-moment decision by his homeroom teacher throws Ralsei and Lancer, one of Ralsei's bullies, into another world, his life finally speeds up; for better or worse. Now expected to work with Lancer, Save the world, help several new friends with their problems, help his old friends with their problems, and more, Ralsei's got his work cut out for him.
A roleswap AU of Deltarune, where Ralsei/Kris trade places, Lancer/Susie trade places, Noelle/Berdly trade places, and many Darkners rotate around.Series
- Part 1 of Shattered Mirror
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Everyone knows the story of Undertale. But what if something changed? Just like the tale for-told, King Asgore, King of monsters, declared war on all of humanity after both his human child and biological son died to the hands of the humans who lived in the village on the surface. But tragedy struck, and Asgore died in the war he created for himself.
The King’s ex wife, Queen Toriel, now finds herself trapped within a dire situation he had left for her. She managed to bring the war to an end peacefully like she wanted, but at the cost of her fellow monster’s freedom. The humans created the barrier, and trapped all monsters underground. Queen Toriel, her heart now broken into pieces and now remolded into something darker, set a rule where all humans that fall into the underground won’t be killed, but will instead be made into slaves.
But what happens when it’s a child that falls into her newly established hell? Will her heart be opened up once more? And will a silly little skeleton help her find the most precious thing she lost? You’ll just have to read to find out.
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Summary
This is the final part to the Kingdomtale pacifist series. I have a few other works I wanna post as well that are also kingdomtale related so keep an eye out for those. Also if you haven’t read parts 1 or 2, go read them! They’re gonna help explain how we got to this point in time.
Warning: may contain mentions of abuse, violence, death, dust, blood, depression, attempted suicide, cursing, romance, weird/Toby logic and ships. If any of these bother you then why are you still here? Otherwise, if you are fine with these things please enjoy reading this grand finale! This takes place after part 1, humanity’s creed, and part 2 of this series. Our protagonist Frisk is only referred to as a girl or she/her when it’s the humans talking due to the time setting and because of the morals discussed in humanity’s creed. Otherwise they are referred to as they/them (nonbinary pronouns. Or whatever other nicknames I mentioned in parts 1 and part 2). All oc’s are owned by me, other characters are owned by Toby Fox.
- Language:
- English
- Words:
- 6,258
- Chapters:
- 8/16
- Hits:
- 19