The Merciful Killer (UnderTale) - Fantasizing 24/7 - Wattpad

Story cover for The Merciful Killer (UnderTale) by 888Ari888

The Merciful Killer (UnderTale)

Reads 1,163
Votes 48
Parts 25
Time 3h 8m

Reads 1,163
Votes 48
Parts 25
Time 3h 8m

alphys asgore asriel chara fight flowey frisk mercy metatton muffet papyrus sans toriel undertale undyne

She fell to the underground like any other human, but she was different. Her eyes were sinister...and paired along side a certain golden flower, she's a true nightmare. She killed the mother, the skeleton, the heroine, and the robot.  She killed the other skeleton. She tried to kill me but I reset. Now she came back, but in a merciful path. Can we trust her?

[OC X  Mettaton]

[IF YA DON'T LIKE OC X CANON THEN DON'T READ IT]  

Good day 
♡o。.(✿ฺ。 ✿ฺ) ♡o。.(✿ฺ。 ✿ฺ)

UPDATES: Every Monday (unless school is a bitch then I would have to skip a Monday)

-Chapter Types-
Story chapters: 13
Soul chapters: 6
Glitch chapters: 2
Two Devils chapters: 0

[Betty Noire belongs to Camila Cuevas]All Rights Reserved

alphys asgore asriel chara fight flowey frisk mercy metatton muffet papyrus sans toriel undertale undyne

Table of contents

25 parts

Sign up to add The Merciful Killer (UnderTale) to your library and receive updates

or

Content Guidelines

You may also like

What We Hope For (Sans X Reader) ✨UNDER EDITING✨ by Grace97721

Everyone has a happy ending. If you're not happy it's not the end . . . . •°•°☆°•°• Y/n (that being you) fell into the underground at the age of 13 and found refuge inside a hidden house in the snowy forest. Fast forward 10 years later still no one knew of her existence. That all changed within the span of a year. First there was a punny skeleton, then a child with a striped sweater, then chaos. Memories of the past resurface, A romance blossoms, Drama rises, Follow y/n as she learns again what friendship, trust, fun and love is. I HOPE you're up for it. •°•°☆°•°• [Warning the story is rated for older teens as it will have: - mild profanity - creepy descriptions - violence (ranging from mild to slightly graphic) - blood - murder - trauma - genocide - suicide (only in one chapter)] _______________________________________ Specials/Extra content: ⤵️ 🎃 Part 1: Available 🎃 Part 2: Available 🎄: Available 🍳 : Available 🔪 : Available Q&A : Available 🎃 Rewrite : coming soon _____________________________ Highest rankings: #2 xreader #1 Undertale #1 Sansxreader #1 Sansxfemalereader #1 Frisk #1 Determination #1 Asgore #1 Alphys #1 Toriel #2 Papyrus #2 Flowey #2 Undyne #2 sans ______________________________________ Credit to artists for cover and any chapter artwork. All characters except for the ones I create belong to Toby Fox, creator of Undertale.

Undertale X Reader [In Remake] 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

Yandere Undertale Oneshots =] (Discontinued) by Yosieplayz

[3rd book] So it's yandere Undertale One shots because I can. Also because some characters just kinda need to be more recognize. Slow updates? Or it will just Update at random. Also there might be some errors so sorry about that. Started - 4/9/23 Ended - 5/31/24 I don't own Undertale or the Characters! Not the Cover I just edited it!

Royaltale Season 1 by Uni_Is_Papyrus

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?)?

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. ~~~

A Tree, For Us (Sans X Reader) by TheAbandonedQuiche

CONTAINS SPOILERS FROM BOTH PACIFIST AND GENOCIDE RUNS After a horrible situation, I (Y/N) scaped from home to avenge my (sibling). In a failed attempt, I got lost and fell through a hole, in there I found another world... "the underground". I meet many friendly monsters, one, specifically, changed my whole life. Both of us will try to give the monsters the liberty they deserve. And this is how all happened... (Cover made by me :3)

Betrayal of Euphoria «Book 1» by xHaunting-Whispersx

"I'm bleeding...but it seems as if my fears have vanished as I stare at the male before me. He gazes at me with such intensity and I can't help but feel...compelled by his alluring crimson eyes. A feeling of felicity bubbled within my stomach. It was weird...since this man kidnaped me and all, but...I wasn't afraid-not a sense of qualm within my body. I was relaxed and eased...I wasn't afraid, which I guess, made me enjoy his presence. He was a God and I was the measly beggar before him...Oh, how I just wanted him to hold me...wait...what am I saying? "'Snap out of it Blu! He kidnaped you! This isn't some Stockholm Syndrome thriller! He's going to kill you if you don't do something!!'" Despite the edge my conscious clearly announced, I felt at peace. I was happy-no anxiety, no sadness...just bliss...he treated me well and I loved him...but, did he feel the same?" - This is kind of like an AU? Like Chara is an actual human not a video game character, along with Frisk who pops in or is mentioned a few times throughout the story. This story contains smut (it's shitty regardless, lol) and swearing, maybe, and it's between two males. If you're not into gay stuff, then this story is not the right one for you. :) It's also written in third person, not first person, like the description is...oops? Disclaimer: I do not own Chara or Frisk, I just own the plot and the character Blu, his family, and that's about it...

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.'~

Sacrifices (Undertale FanFic) [COMPLETED] by Brynwyth

Frisk has freed the monsters of the Underground. Finally, monster kind is allowed to return to the surface. It's been 3 years since then. Yet the monsters still struggle to find their place within the world. Most accept the monsters, but there are those who wish nothing more than the complete annihilation of monster kind. Merely sealing them away is not enough. As ambassador for the monsters, it is Frisk's responsibility to fight for everyone's right to live on the surface. But at the same time, an internal battle rages on within her. Not only that, her relationship with Sans is strained. Trust is not so easily regained after the slaughter of one's beloved, despite it all being erased. Or was it really? The memories are still there. *I have lost interest to complete pre story and post story parts. Please enjoy the main story and the extra tidbits.* Chinese Version: http://fav.me/db7h2kg DISCLAIMER: I do not own Undertale. TobyFox is the creator and owner. Cover art does not belong to me. I only edited it. Photo was found off Pinterest. If anyone knows the original artist, please let me know! I'd like to give them credit.

Undertale: Genocide by CassBunnys

"In this world, its kill or be killed" - Long ago, two races ruled over Earth: HUMANS and MONSTERS. One day, war broke out between the two races. After a long battle, the humans were victorious. They sealed the monsters underground with a magic spell. After the war, the monsters retreated into the deepest part of the Underground, which would be called, "Home." - Note: In chapter one i NICKNAME frisk "Sam" Due to the fact you dont figure out their name until the end of pacifist so i had to put a nickname to make it easier to write and read. Sam is a neutral name so it should be fine. - NOTE: All lines with this symbol " * " is going to be in Wing Ding font in the final release of the book. But for now, it is already deciphered for you! - *So yeah! This is book one of my Undertale Series, which will be 2 books in total. *The book is Fanmade of course, Support the original game by Toby Fox. *Since its Undertale, i have to warn you guys obviously that there will be action and mature things. And book one is Genocide, so... *Follow my Instagram: @Djcasso -

You may also like

Slide 1 of 10

What We Hope For (Sans X Reader) ✨UNDER EDITING✨ cover

Undertale X Reader [In Remake] cover

Yandere Undertale Oneshots =] (Discontinued) cover

Royaltale Season 1 cover

Colors | Chara x Papyrus cover

A Tree, For Us (Sans X Reader) cover

Betrayal of Euphoria «Book 1» cover

What Went Wrong? cover

Sacrifices (Undertale FanFic) [COMPLETED] cover

Undertale: Genocide cover

What We Hope For (Sans X Reader) ✨UNDER EDITING✨

Everyone has a happy ending. If you're not happy it's not the end . . . . •°•°☆°•°• Y/n (that being you) fell into the underground at the age of 13 and found refuge inside a hidden house in the snowy forest. Fast forward 10 years later still no one knew of her existence. That all changed within the span of a year. First there was a punny skeleton, then a child with a striped sweater, then chaos. Memories of the past resurface, A romance blossoms, Drama rises, Follow y/n as she learns again what friendship, trust, fun and love is. I HOPE you're up for it. •°•°☆°•°• [Warning the story is rated for older teens as it will have: - mild profanity - creepy descriptions - violence (ranging from mild to slightly graphic) - blood - murder - trauma - genocide - suicide (only in one chapter)] _________________________ Specials/Extra content: ⤵️ 🎃 Part 1: Available 🎃 Part 2: Available 🎄: Available 🍳 : Available 🔪 : Available Q&A : Available 🎃 Rewrite : coming soon _ Highest rankings: #2 xreader #1 Undertale #1 Sansxreader #1 Sansxfemalereader #1 Frisk #1 Determination #1 Asgore #1 Alphys #1 Toriel #2 Papyrus #2 Flowey #2 Undyne #2 sans ________________________ Credit to artists for cover and any chapter artwork. All characters except for the ones I create belong to Toby Fox, creator of Undertale.