Undyne Stories

What if there was an anomaly in the Underground? No, not Frisk. Not Chara either. Someone else entirely. How could a few measly children stand to this supposedly immortal foe and save the Underground from destruction? Is it even possible to do so? Only one way to tell... ~o0o~ Disclaimers before you start! •There is NO fanon ships. That means no Soriel, Papyton, etc. The only ships are Torgore (in the past) and Alphyne. •This is NOT an x reader. I dislike those types of stories. The reader will have no part in this, and they will not be shipped with anyone. •This exists outside of canon to an extreme. For example, Frisk is the second human and not the eighth. •There will be OCs, but only for a few humans and they still technically exist in normal Undertale. •There is a sequel. I'm planning on rewriting it after this one, as it is much more random and definitely needs it. Clanky, plot holes/retconning, etc. It's more of an OC thing, to explore them and their issues, than an Undertale thing, but it has its similarities. •There will be some explicitives. It won't be unnecessary or excessive, only when it fits the situation and character. I will not be using any slurs, as that's just plain disrespectful, even if some of them apply to me. Credits: Undertale, obviously, created by Toby Fox and Temmie Chang. "The Time Before" by ANinnyMouse42 is the backstory for Sans in this AU with some adjustments (mainly since that was very close to my original idea before I read it and I don't want people to think I copied their masterpiece or smth, if you haven't read it please do so, it's really good). Some things will be in reference to the other books in the trilogy or "From War to Science" by Emotistic-optimistic. If you haven't, read that too. It's really good (along with its sequel). The cover was made by me! Have a good day! (Also, the title is a placeholder, if anyone has any ideas that make more sense, please let me know.)

Gumball, Darwin, and Carrie climb onto mount Ebott and fall down, landing on top of Frisk. The 4 venture to across the underground to escape. NOTE: I watched Gumball on Netflix so I could only watch the first 2 seasons, so I might not know a lot of the Gumball lore.

The skeleton shakes his head slightly, a boney hand sliding across his skull. "Ah- well- that wasn't free Doll, 'course you'll have to pay me for that..." He trails off, his cocky smirk ever present on his face as he looks you up and down for a mere second, "...little favor." He pinches his pointer finger and thumb together before rubbing them together. _____________________________________ (Y/N) is a bartender that was kept secret from the after hours patrons at the bar she worked at for two years. Her boss not wanting her to associate with the people that would further pull her into a world that she was scratching the surface of just by working there. But after staying just a few minutes later then she was supposed to she stands face to face with a gold toothed smartass with a devilish smirk- his red eyes trained on her every move. ______________________________________ There is cussing but let's be honest- there's cussing everywhere. Also posted on AO3 as clubofsnakes where additional chapters later on will appear there and not here. I was inspired by- @MissHoll-E-Socks with their story "Can I take you to dinner?" NONE of the art is mine.

After escaping the Underground and getting clipped by a truck, an amnesiac Sans ends up in the home of a vet, a doctor, and their daughter. He's certainly nothing they've ever seen before, but they can't just let him suffer either, so he becomes the unlikely son. So when Frisk falls into the Underground, Sans must return home to the place he was born and raised. Can he and Frisk free monsterkind from the mountain, or will they make a home Underground with the family Sans lost long ago?

???: I want a fresh start and you seem like the perfect specimen to use for this story, Y/n L/n. (So in short the first story of this still happened but ???(me) Erased the memories of it happening making it all happen again I hope you guys enjoy this story till next time.)

Monsters have never been sent to the underground. The war that raged between monsters and humans ended in a draw, but no peace treaty leaving relations tense on both sides. The earth and cities are not in the best of shape after such a war, the weather tending to vary greatly from area to area based on residual magic left behind from the fighting. Some areas are human territory, others claimed by monsters, some simply neutral with a hope of peace and calm. Thieves and bandits are everywhere, the royal guard and police force not able to keep up with their growing numbers and largely leaving them alone at this point. Technology continues to advance, with each race constantly trying to outdo the other. Jade lives and fends for herself, currently living in an abandoned warehouse near the Hotland district, in the more desert and neutral areas between there and the human city of Külaküla. What happens though when she stumbles upon an interesting sword leading to long journey? - - - - - DISCLAIMER: I do not own Undertale or Transistor. This is a fanmade story that will have elements from both but will follow the story and head canons I accept or want to use for the sake of this particular story-line. This story will have influence from Undertale, Echotale, Transistor, and my own au Tomadachitale. You don't need to have information of them all before beginning, I'' be doing my best to explain everything at some point in the story and you can comment questions you may have about it! Plus, I'll be adding some of my own spins anyway. Thank you :3

Abandoned on Mt. Ebott at the tender age of five, young Harry's unsurprisingly died, but Death's always had a weird relationship with his variant... Meanwhile, before Flowey's revival as souless talking flower, Sans makes a discovery under the mound of snow, Papyrus has always wanted to be a big brother anyways. *Edited Summary (29/09/2025)

It was really hard for you to make friends, until Papyrus came along. No one laughed at your jokes, until Sans came in with his own puns. No one watched anime with you at midnight until you met Alphys. No one taught you to stand up for yourself, but when Undyne came along, you learned. You couldn't consider anyone as your mom, until Toriel decided to take care of you. No human was you friend, until Frisk came. After the monsters came back to the surface and began to live peacefully with the human world, your entire life changed. Not only did you hear one of the greatest stories told, but you got to see the people inside the story, and make your own with them. Isn't that cool? But then, your story takes a new turn. Will you be able to save your memories, and your new friends, or will you just have to let them go? So, obviously, this is a fan-fiction. I have recently began to have a huuuuge interest in Undertale, and this is what happens when you put a crazy writer in a videogame. Inspiration. Now, I would like to state that I used to HATE HATE HATE fanfictions, because I didnt know if the creator of Undertale, Toby Fox, would approve. Now I understand that this is a way to show the creator of a work that you love his idea. This is dedicated to Toby Fox, who made a great videogame, and many loveable (or killable for all you genocide maniacs in the universe. Me, I don't have the heart to kill all those amazing souls...) characters. I promise that I will try to keep the personalities of your characters true. And this is for all the people who play undertale, and have wondered what it would be like to live with them, after watching the sun rise? It's not the best, but it's my best shot. Hope you have fun reading my story.

He created me to become the people's art. But he has only created the perfect weapon. (Cover drawing is not mine)

Undertale, Deltarune, BNHA, and more! Basically just random stuff I have saved on my phone for some reason (tbh it's mostly just Undertale) None of these memes / works of art are mine unless stated otherwise. If you want to know where i got the memes you can ask me by commenting and I'll gladly search for wherever i found it

UNDERTALE ZODIACS WOOOOHOOOOOOO This is definitely gonna turn out gr8 {Highest; 200 in Random}

This is an Undertale AU I originally planned on making back in 2019 but, I wasn't capable of making all the character designs and forgot about it for two years. A few months ago, I thought about redrawing the only two designs and reviving it as well as changing most of the original plot and instead of making a comic series, I'm writing it so it will be easier to think about more designs. OCs are included in this AU. If you would like yours to make an appearance, message, or tag me to discuss when they can appear. This is season 1 of the series and it will basically follow the events of Undertale because there was a strange, unexpected reset after 10 years of living on the surface. Now, it's up to Frisk to help her friends remember their lives before the reset and save the world before Flowey tries to kill all of humanity as well as monsterkind and Mystickind. Can the determined human survive yet another perilous journey through the Underground or will everyone fall to Flowey's hands (leaves?)?

Long ago, there was a land far away. lived 5 princess's and their two younger siblings. After the parents passed away from the war. It's up to the eldest to protect the kingdom, that is until they make it back.

Asriel is a rebel that has flunked all his classes, and with the last semester starting, he needs all the help he can get. A tutor is assigned to help him, but not in the ways you would expect.

Makoto felt his soul, restocking with more and more DETERMINATION as it pained him, so, so much that even his friends are worried. After beating Junko, for the trillionth time, Makoto, having enough DT must try to not reset, but is faced with the obstacle of his friends finding out. And soon enough, all his friends storm into Naegi's room and confront him, asking him for the truth of why he looked tired. Makoto tries to shake it off, saying that he was just having a bad day, but his friends know better. But, something sudden occurs, and Naegi's friends start to learn the truth, of all of Makoto's secret friends Makoto made at the age of six no one knew of, and the life threatening events Makoto has gone through. Read more to find out what happens! Also, I know nothing about honorific, so everyone call each other by their first names or last names, and forgot to mention, Makoto and Kirigiri are dating in this book!

You ran away from home, fell into a hole, and somehow ended up alive. Your older brother, Frisk ran away 4 years ago. Did he fall down here? Is he still alive? Read the story to find out what happened to your long lost loved one, go on an adventure through the underground, make friends, fall in love, and much more.

D.V. Serif was always forgotten. Nobody paid her attention. Except one of her brothers, Sans. They knew all about W.D. Gaster, but nothing about her. She was the one monster that Chara didn't kill in certain timelines. But she knew all about every one of them. She held the power to reset, to remember the timelines, to alter them. She could do what even Flowey could not. She could create anything... But nobody seemed to know, or to care. Until now. (I kinda changed her name a bit. D.V. stands for DejaVu. So she's DejaVu Serif, okay?) Discontinued

After surviving the flood of Horrors and curing Sans of his madness, everyone was ready to get back to work brainstorming on an idea to free the Font Horror and restore balance to the world. Sadly, Symbol was a Legendary Font and there are consequences when such a type is not dealt with properly. Beasts from Greek mythology begin appearing in the Underground, sowing havoc and making it impossible to not only continue, but to even leave! Now Chara/Frisk, Baby Papyrus, and Flowey live with the brothers and have been doing so for three whole years in a kingdom that not only hates their guts, but is slowly falling apart now that other Fonts have moved into the houses of the dead. With four murderous assholes living under one roof, Sans' patience runs thin and more problems arise that he and Papyrus just can't handle on their own. They both begin to wish for the simpler days when Fonts weren't a thing and everything wasn't so chaotic. Good thing there's a certain skeleton who can visit other timelines currently on the run!

A story in memoir style from the point of view of the Dr. Gaster of Glitchtale entailing the events in between "My Sunshine" and what will happen in the next episode.

That is right people, this is a book containing all of the cool, sad, funny, scary and even mediocre fan arts all over the internet for UNDERTALE! and all undertale AU! Please come in and comment on your favorite pictures! Warning there is some yuri, and yaoi based pictures in here! Warnings for these with be posted with ***EXPLICIT*** notes on them, meaning they are for those who only want to see the hard stuff! (sex related or extreme gore. More than likely horrortale will be in there a lot XD)