1 - 20 of 701 Works in Undertale Ensemble
Navigation
Listing Works
-
Tags
Summary
Error wakes up in a game he never chose to play—Until The Last Breath, a brutal survival world hidden between life and death. The only players? People trapped in comas. The only way out? Win.
To survive, he must fight through deadly floors, forge uneasy alliances, and follow three unbreakable rules:
[ 1. GAME OVER means death, both in-game and in real life. ]
[ 2. Artifacts must be crafted from Fragments found throughout the world by a Player. ]
[ 3. Reach the final floor before the chronometer runs out… or fade away forever. ]
There are no second chances. No resets. Just one question: can Error and his team beat the game before it beats them—and can love survive in a world designed to tear everything away?
-
Tags
Summary
“Most would probably never understand how a 10 year old could slaughter the entire Underground, but I did. I still do. That’s just what eternity does to people. What it did to us.”
After giving up their moral compass, Frisk believes themselves to be irredeemable. What happens when a person like that is given a chance, though?
Series
- Part 2 of Penguin's Adventures
- Language:
- English
- Words:
- 6,959
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 26
-
Tags
Summary
"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."
_ _ _ _ _
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 Thursdays & Fridays!
Series
- Part 2 of FUSEVERSE
- Part 1 of aubades and nocturnes
-
Random Ideas That I Don't See Enough In Fan Fics So I Decided To Try And Write(Eventually) by kofiitaut
Fandoms: Security Breach Shows - SunMoonShow (Web Series), Undertale (Video Game), UTMV, Deltarune (Video Game)
31 Oct 2025
Tags
Summary
Just some ideas I want to see in fan fiction more, might make a book of one shots for these ideas next.
If you wanna use an idea then let me know, and if I say you can, Please credit me.
Series
- Part 1 of Rando Ideas I Have
-
Gran, Sweet Gran, Where Are Your Wolves? by freshiewrites
Fandoms: Undertale (Video Game)
30 Oct 2025
Tags
Summary
Papyrus and Sans have escaped their kill or be killed lives Underground with the rest of Monsterkind, and have found an apartment building to live in. It's nothing special, and very run down, but there are a few treasures to be found inside.
Gran will take care of these boys if it's the last thing they do. After all, who doesn't need a little help sometimes?
-
Tags
Summary
If reality as a whole could be categorized, it would be a living organism, and if the many worlds and their stories are the blood and veins, then what about the immune system?
something that intervenes when the body is disturbed, when the stories cant reach their necessary ending without external aid
"it's what they call you"
something that needn't see, for its path is set
"its you!"
something that needn't hear, for its emotions are none"despite everything, its still you..."
something that needn't speak, for its thoughts are silent
...
something that shouldn't ask for a name
---ACT 1 "Cogito" <-
ACT 2 "Ergo sum"
...?---
(English is not my first language so expect grammar errors) -
Tags
Summary
You've been in The Void for so long that you can't recall anything. Then you find a way out in the form of a skeleton that uses the damn thing as an express highway. Well, sort of. Only he can see you. Your memories are being weird too, since everything seems so familiar even though you can't recall anything.
Then the human falls, and everything goes downhill.OC-centric fic written from second person, it's not all angst but there's basically no comfort for everything that goes wrong (at least at the story's current point). Arc 2 is multiverse stuff
Arc 1: Rock Bottom, 1-11
Arc 2: Funhouse Mirrors, 12-? -
Bête Noire - La conséquence de ta haine by cogito_ergosum_am (downthe_way)
Fandoms: Undertale (Video Game)
26 Oct 2025
Tags
Summary
An Undertale Story of Choices, Mistakes, and Consequences.
When peace finally settles over the Underground after a reset, Frisk believes their journey is over. But something darker lingers beyond the reset button—a glitch born from hate, fear, and cruelty, the consequence of Frisk’s past genocide. As timelines fracture and familiar faces twist under the weight of new choices, Monsters and Humans alike must confront what becomes of their hate—and what is created when all morals are abandoned.
In this rewrite of Glitchtale by Camila Cuevas, we follow Bête Noire as it navigates the new world above ground, meeting Humans and Monsters alike and spreading misery wherever it goes. Every soul matters. Every choice has consequences. And everyone has a chance at redemption—but what happens when you face a being with no sense of “good,” whose very existence challenges the values you’ve lived for? How do you convince them to join your happy ending?
Love, fear, and second chances collide in a battle where even angels can fall.
- Language:
- English
- Words:
- 288
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 19
-
Tags
Summary
Papyrus has spent the last two and a half years on the surface as the official Monster Mascot, and his very important job requires every important assistants! A shame his previous employees haven't been the most kind individuals!
You've spent most of your life riding shot gun. Maybe it's time someone's on your team for once.
------------------
Or,
A Papyrus/Reader but him being the mascot of the Monsterkind is taken SUPER seriously and the Reader (you!!) is his brand-new assistant who used to work with really shitty people and is ELATED with how much of a sweetheart Papyrus is, and Papyrus is on his 5th assistant lowkey praying this bitch isn’t racist and is pleasantly surprised.
I proposed this on my Discord (welcome to any of my readers!) and couldn't stop myself from bringing this to life.
Series
- Part 2 of How To Be A Human Being
- Part 1 of Unsweetened Lemonade
- Part 2 of I/Me/Myself
-
Tags
Summary
The Barrier's broken and the monsters are stepping out into a Surface they've dreamed of for years uncountable and forgotten. The human that helped them break through is at their side, just as unfamiliar and unsure about the Surface as they are. Upon first glance, the monsters stumble upon another human as they emerge from their prison. A human like any other, but to the monsters 'any other' human has been instrumental to regaining their footing on the Surface. Will this one be too? And are blushed cheeks something every human wears on the Surface? Come along on a journey with humans trying to understand magic, and the memories that follow. Following not as candles that warm, but as shadows that haunt. The human condition changes ever so much when exposed to magic, but how much? And how much can one human take before becoming determined?
A smorgasbord of events from tidying up a goat family to magic of the soul!
This is an amalgamation of the One Falls series into one story with the chapters
1-30:One falls, more rise
31-61:More rose, one remains
62-104:One saved, more left behind
104-120:One Falls: Change Of Heart(s)
121-181:More invited, one to celebrate
182-428:Soul of our Hearts -
Tags
Summary
a record is found by someone. it is... unusual.
(i am not confident in my writing skill i hope this is ok) -
Tags
Summary
Two people of completely different backgrounds and ways of existence die at the same time, in almost the exact same manner. Due to a grand, universal, mathematical error, they are now forced to live out their lives sharing a single consciousness and body. For the first time, someone is able to understand his speech. For the first time, someone is able to understand things from her perspective. Initially spiteful and overly bitter to one another, they grow attached to each other's company. What would happen if they die? How much does someone have to contribute to be deemed worthy of respect and understanding?
A commentary on loneliness and the plight of the foreigner.
A love letter to the fanfics I have read, connected with, and grown to love.
-
Tags
Summary
A bitty reader goes on a crime-solving spree across the multiverse.
*You don’t have to read the previous fic to start here.
This is a continuation, but thanks to the amnesiac plotline, it should also work as a standalone.Series
- Part 3 of Avaverse
-
Tags
Summary
For Monsterkind, the Surface represented freedom.
For Frisk, it's a return to some uncomfortable realities.
It all began with a simple wish. When that wish faded, Frisk tried to move on.
Except, 'moving on' was not so simple. Emerging from the Underground had put them in a worldwide spotlight.
From an unknown child, they had become an icon of great value.'The Golden Quiche'
What to expect from this story:
-Mystery Drama
-Anime
-Extensive Surface Worldbuilding
-Expanded History and Backstory
-Magic System
-More Magic
-Both new and old people.
-Feels.
-Gambits.What to not expect from this story:
-Toby Canon.
-Commonly agreed headcanons
-Slice of life. This is definitely not that.The Magus Compendium lorebook
Quiche Side Stories
My Links
Discord -
𝐑𝐄𝐒𝐄𝐓 𝐌𝐄 𝐆𝐄𝐍𝐓𝐋𝐘 ── BAD!SANSES X READER by HauntStrike
Fandoms: Undertale (Video Game), Undertale!AUs, Underverse - Fandom
15 Oct 2025
Tags
Summary
⠀⠀⠀⠀⠀
— “C’mon, Dusty, let ‘em breathe! They just found out they’re a anomaly.”*You stare at them, words caught in your throat.*
“A… what?”
⠀⠀⠀⠀⠀⠀⠀⤹✎⤸⠀.⠀⠀.⠀⠀. ⠀⠀.⠀⠀.⠀⠀.
ㅤ⠀ㅤ⠀𝅘𝅥₍ ☠︎ ₎ ㅤ𝅄ㅤ⊰✝︎⊱ ㅤ𝐈𝐍 𝐖𝐇𝐈𝐂𝐇 ─── What does the fate of the Multiverse have to do with you? Well, my dear __________, you live in a world that feels ordinary: familiar streets, a life that seems entirely of your own. Well, until a visitor arrives, and suddenly, the life you thought was yours begins to feel… 𝙛𝙧𝙖𝙜𝙞𝙡𝙚. You realize you are no longer just living, and everything you once know was a lie.. Now, the fate of the narrative hinges on what you do next: and with a bunch of chaotic skeletons. It seems that leaving this place might be the only way to survive this madness — if the creators will even let you...
⠀⠀⠀⠀⠀⠀⠀⤹✎⤸⠀.⠀⠀.⠀⠀. ⠀⠀.⠀⠀.⠀⠀.
╰>⠀⠀🉇; 𑁍 ˒ 𝐔𝐍𝐅𝐈𝐍𝐈𝐒𝐇𝐄𝐃 𝐁𝐎𝐎𝐊 - The chapters will be posted once or twice a week.
-
Bonus Content by SpectrumWriting
Fandoms: Undertale (Video Game), Deltarune (Video Game)
13 Oct 2025
Tags
Summary
Something has gone wrong.
Ten years into their happy ending, Frisk wakes up back in the Underground with no memory of reseting.
A few hours after parting ways for the night, Kris and Susie wake up in a strange new Dark World... again.Frisk's save file has been corrupted. Kris's soul isn't behaving how its supposed to. And Ralsei shouldn't be here at all.
An epilogue and a story half-told can't coexist without some conflict involved. -
Tags
Summary
Disoriented and emotionally frayed from decades spent in the void, W.D Gaster suddenly finds himself at the mercy of a cold and arrogant alternate self. His doppelganger promises to return him to the void once his research is complete but before he can make good on his threat, Gaster is introduced to this world’s variant of his son and he is forced to make a quick, spur of the moment decision.
This sole act sends unforeseen ripples throughout the Multiverse and hurdles Gaster on a perilous journey across it to find his way home.
or
Dadster plays hopscotch across the multiverse, unintentionally and intentionally acquires children, tentatively reciprocates Grillby's feelings, engages in actual literal custody battles with copies of himself, somehow steals a Bad Sans™, narrowly avoids death at the hands of Error and somehow flies under Ink’s radar for a shocking amount of time.
-
Tags
Summary
That hall, bathed in rays of gold. The comedian manages to convince the fallen to RESET. Not that they were opposed to it in the first place. They do it right, this time, and their life on the surface begins. Perhaps, for once, they gain love, instead of LOVE?
-
Goobers across the multiverse by the_Shade_of_Blue
Fandoms: Persona 5, Touhou Project, 大海原と大海原 | Oounabara to Wadanohara | Wadanohara and the Great Blue Sea, Pocket Monsters | Pokemon - All Media Types, Pocket Monsters: Diamond & Pearl & Platinum | Pokemon Diamond Pearl Platinum Versions, Undertale (Video Game), Kirby (Video Games)
12 Oct 2025
Tags
Summary
(Yes the fic was deleted but It's back now)
6 chatters all of which from completely different universes, an opportunity 3 mysterious admins have granted them for an unknown purpose...
We all know how these tend to go by now, yea?
-
A FINE LINE BETWEEN ORANGE AND YELLOW by Fantasy_Artist
Fandoms: Undertale (Video Game), Original Work
09 Oct 2025
Tags
Summary
While Aneira didn't necessarily believe monsters existed, she did find the fact that everyone and their dog still did might mean something. Her childhood town of Beddgelert believed in monsters trapped under the mountains near their home that would need a seventh soul now to break out and destroy lands.
Aneira also knew that she needed to figure out what happened to the kid she was friends with who went missing. Which was how she found herself having fallen (probably) hundreds of meters below a mountain inside a cave system. Was she stupid for leaving without telling people where she was going, definitely, but, to be fair, she didn't expect to fall; she couldn't even see the hole.
Injured and wanting to go home, Aneira braves through the underground cave systems, finding MONSTERS both friendly and foes, learning about what happened to all the previous (children) HUMANS that fell.
tldr: Aneira falls instead of Frisk, is injured and is too stubborn not to use this chance to find out what happened to a friend (definitely dead by now, but she still wants to confirm), the Undertale cast feels like something is different, but not what. They also live in Wales here because why not?
Series