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Megalomaniac (An Undertale AU)

WillowTheUnicorn

Reads 25
Votes 0
Parts 1
Time <5 mins

Reads 25
Votes 0
Parts 1
Time <5 mins

WillowTheUnicorn

chara charadefensesquad frisk undertale

Megalomaniac; Someone obsessed over their own power

~\~\~\~

It was merely a minute. That's all it took. A minute. That's how long it took for mercy to change into genocide. That's how it took for Frisk to be corrupted. That's how long it took for her to slash Toriel and kill her.

Awoken by Frisk's determination, Chara followed the small child in curiosity. Chara smiled at the human, trying to befriend her. Chara just couldn't shake of one thing. The child's expression. Somewhat suspicious but a permanent smile plastered on her buttery face and shut eyes that Chara never saw open. Genocide. Chara wasn't impressed. That's an understatement. Chara was shocked. Her mother, murdered before her. Her friends.

Chara had to find a way to stop Frisk before they erased the world and everyone in it before it became nothing but an empty timeline. 

~\~\~\~
Undertale is owned by Toby Fox NOT me. XD

Chara and Frisk are she's :3

Chara is no villain, guys #CharaDefenseSquad SPREAD IT XDAll Rights Reserved

chara charadefensesquad frisk undertale

Table of contents

Prolouge
Sat, Oct 8, 2016

1 part

Prolouge
Sat, Oct 8, 2016

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One By One (COMPLETED)(A UnderTale Genocide Story) by BubblyShip

(UnderTale completely belongs to Toby Fox, I in no way helped him create the game. I'm just simply a huge fan and want to write a short Genocide route fanfiction. Also, this story is COMPLETED, so don't expect any more updates. I also drew the cover.) A long time ago, the first human fell down into the ruins. A monster named Asriel came to help her, and quickly accepted her into the family. However, a disease fell upon the young child, and she died shortly after. Years later, a 7th human fell down into the ruins. However, the spirit of the first human took over her body, and decided to take out her revenge on the monsters of the underground. This is a True Genocide Story.

songs for the fallen by friskybitz99

[Undertale (2015) originally by Toby Fox. This story is an AU, and is written to be mostly understandable to non-fans.] TL;DR AU Chara & Frisk slow-burn enemies to friends. [Content warning throughout for references to child abuse/neglect and suicidal thoughts.] It's an unseasonably cold morning in May when runaway foster kid FRISK finally decides to give in to the siren's song of the mountain that's been haunting them since they hitchhiked to the small town of Ebott. They're expecting a quick end to a long, miserable story, but what they find at the bottom of the pit they tumble into is far from anything they could have predicted. Thrown into a world of magic and monsters, they realize things here are nothing like the world they left behind. And, of course, there's the voice in their head. That part's definitely new. Newly awoken from a death that was supposed to be final, CHARA, misanthropic former Princet of Monsterkind, must contend with the fact that not only is it awake again, but it's stuck with a human, of all things, as its host. All it wants is to finally complete its plan to set its family free--but the owner of the head it's stuck in seems intent on getting in the way. At this point, closure seems impossible. But there's only so much two kids sharing a body can avoid each other. As the two settle into an awkward alliance, each with their own motivations to reach the King of All Monsters, it becomes apparent that they will need to use their unique bond to their advantage. The fate of this world has long been set in stone. But with enough determination, even mountains can be moved. Undertale "Tags": --Narrachara --Nuanced Chara --Nuanced Frisk --Chara & Frisk-centric --Not romance-centric --No player, but there not being a player changes the story. (Frisk filling the role of the Player is the driving force of changes in this AU.) --Frisk is not a Dreemurr sibling. [STATUS: 2/3 acts completed, 250k words so far. Placeholder cover.]

What Went Wrong? by AngelOfTheDead80

~'Disclaimer: This story has a lot of profanity and covers some very very intense or touchy subjects that may disturb some readers. You have been warned.'~ ((Unedited)) After Chara fell into the Underground, they met Asriel a monster inhabitant of the Underground. Soon after that, Chara joins a new family, but their ambition to keep everyone happy goes a little overboard and Chara is flung into a reality of destruction and hopeless wonder. Then many long years later they meet the beloved Frisk, who fell into the Underground, similar to themselves. Eventually everything Chara thought they knew correctly is turned upside down and they as a person are changed forever. ~'The game Undertale belongs to Toby Fox and some of the dialogue is ripped straight from the game itself, too.'~

FurtherDown by THEANIMATEDFOX4

Was this truly the last RESET? Sans wondered. But he knew only Frisk would tell, only this young girl would decide his future. He hated the thought of it at first, but hatred began to grow numb after he figured out he had no say in his own future. He had to admit though, Frisk was pretty reasonable, it was Chara who was the maniac. But she was gone now, so what was the anticipating, eerie, feeling that he had in his bones? The feeling that something wasn't right, of course, this timeline was already incredibly strange. The feeling sat in his in the pit of his stomach, tying itself into knots, until that fateful rainy day when all of his questions would be answered. So basically, this is a fanfiction of a fancomic of the game Undertale. Look, I'm gonna admit, I'm little stuck in the Undertale fandom, so this is my of slowly crawling out of it. Anywho, I strongly suggest you read the fancomic which this fanfiction is based off of, DeeperDown, before reading my story. Here, I'll give you a link. http://gettingdeeperdownwithundertale.blogspot.com/ Anyway, enjoy the story, it took me about 11 months to write, so please consider enjoying it, seriously. - Ya Boi, Fox

Undertale X Reader by Cat_Maipie

Let's get to the point shall we? So let's look at the list here... You're a... no information? Hm, interesting i guess, I'll have to base it off my observation. Whatever, you're a human, well kind of. You're a human and a monster at the same time, more like in between. Let's say... player? Better than nothing i guess. You're your own person. Sometimes you control frisk, sometimes you don't. You can also move through timelines, and also universes but that may be too risky huh? You'll find more about it soon... THIS CONTAINS VIOLENCE PLEASE BE WARNED! Lemons? Maybe. - #57 in sans 12/14/25 - #1 in floweyxreader 01/10/25 *** COVER : Credits to the person who made it GAME : Toby Fox

Across the Timelines [an Undertale Fanfiction] by missdisappear01

(ORIGINAL Version. Not revised) No one ever expected for the timelines to cross, that is, until there were two of them. The lovable and friendly Frisk, and the evil killer, Chara. With an experiment gone wrong, and a strong connection between the two boys, can Frisk and his friends change Chara's view of monsters?

Colors | Chara x Papyrus by NoellaBerry

~~~ [COMPLETE] After being set free from Frisk, Chara finds herself shoved into a new life that she didn't ask for. She's cold and distant for days, void of a SOUL and seemingly proper emotions. However, there's a certain somebone who refuses to tolerate it anymore. Unlike her, he's kind and unfortunately, always around. When Chara finds herself dealing with unrecognizable feelings, he knows just how to help her. ~~~

Fused by DinoDotsCreations

*DISCLAIMER* I DO NOT OWN ANY IF THE THINGS I WRITE ABOUT - NOR THE ART This fan fictions takes place after what's called a Genocide Run in a game called Undertale. "Do you think that even the worst of people can change? That even after what they do, anyone can be a good person?" Frisk thinks this is true, but not for her. After resetting after killing every monster in the underground by being taken over by Chara, she fears to get close to her once friends. After Chara threatens Frisk if she didn't kill one of her favorite monsters, Sans the Skeleton, she begins to distance herself from everyone; including herself. Will Frisk figure out how to defeat Chara and have a happy ending once again, or will she succumb to the pressure and begin the slay every monster- just like before? Edit: I own Fuse, but none of the other characters. Original Sans the Skeleton is owned by Toby Fox and any variation other than Fuse is not owned by me. None of the pictures are mine and I found most of them on Google so I don't know who they rightfully belong to. Another edit: I changed the name to Fused

He's Mine (COMPLETED)(Yandere Papyrus) by BubblyShip

(UnderTale rightfully belongs to the amazing Toby Fox, I am not creative enough to make that masterpiece. There is a person named symphysins who drew some work of Yandere UT! Papyrus for Sans, and I really liked the idea of a creepy UT! Papyrus and decided to write a short story on it. Also, Frisk can't reset, she never had that ability. The cover is my own art.) "Why is everyone I date dying?" Sans asked, covering his eye sockets. "Am I cursed or something?" "I'm sure you're not cursed, Brother!" Papyrus said, patting his back. "T-There might b-be a Yandere on t-the l-lose!" Alphys piped up. "A Yandere?" Sans asked, tilting his head. "What's a Yandere?" ~~~~~~ Sans felt like something was wrong. Everyone he tried to date ended up dusted, and he couldn't figure out why. So, when Alphys explains to him what a Yandere is, he realizes he might be someone's Senpai. Determined to stop this endless cycle, he teams up with his friends to try and find this psychopath. If only they knew he was closer than expected.

Determined to Stand by Luna-Moon-201

After 3 years after Frisk flee the monsters from the Underground. She lives happily up on the surface with her new family of monsters. Well with Toriel, Asgore, Undyne, Alphys, and Flowey left to Washington D.C to meet the president. Sans and Papyrus are left to watch Frisk till Toriel returns home. Chara has plans to take control of Frisk. He wants her soul and to Reset the world again. There is however another person whom lurks beneath the shadows that Sans and Papyrus kept secret from Frisk. Now it's all going to be reveal. So many mystery to solve and secrets to uncrack. Frisk will soon have to face her fears and overcome Chara's evil plans. With the help of old and new friends. Note: Frisk is a female in the story and Chara is a male.

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Slide 1 of 10

One By One (COMPLETED)(A UnderTale Genocide Story) cover

songs for the fallen cover

What Went Wrong? cover

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Undertale X Reader cover

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Colors | Chara x Papyrus cover

He's Mine (COMPLETED)(Yandere Papyrus) cover

Determined to Stand cover

One By One (COMPLETED)(A UnderTale Genocide Story)

(UnderTale completely belongs to Toby Fox, I in no way helped him create the game. I'm just simply a huge fan and want to write a short Genocide route fanfiction. Also, this story is COMPLETED, so don't expect any more updates. I also drew the cover.) A long time ago, the first human fell down into the ruins. A monster named Asriel came to help her, and quickly accepted her into the family. However, a disease fell upon the young child, and she died shortly after. Years later, a 7th human fell down into the ruins. However, the spirit of the first human took over her body, and decided to take out her revenge on the monsters of the underground. This is a True Genocide Story.