Forbidden [Nightmare!Sans x Reader] - sigh - Wattpad

Forbidden [Nightmare!Sans x Reader]

Reads 7,091
Votes 280
Parts 52
Time 8h 27m

Reads 7,091
Votes 280
Parts 52
Time 8h 27m

Mature

angst badsanses cross crossover dream dreamtale dust error femalereader horror ink killer nightmare nightmarexreader sighnerd starsanses swap undertale undertaleau warriorcats xreader

Warrior Cats x Undertale Multiverse Crossover
~~~~~~~~
Since the Multiverse was created, the Creators have been fighting over the AUs non-stop. It was a horrible, bloody war that lasted centuries. Many were killed and many were cast away as outsiders.

One day, the Creators met in an AU called Dreamtale, and after another battle, the dead came down from the sky as spirits, and the fighting ceases. They told the Creators that were alive to unite, or they would die.

So that's what the Creators did. They united. They- and their AUs inhabitants- created Clans. They all lived in Dreamtale, surrounding the Tree of Feelings.

Generations passed and the Clans had never seen a war so horrible since the War of the Multiverse. They lived in an almost-harmony.

Until Nightmare came along, that is.
~~~~~~~~
Hiya! It's me, Sighnerd.
This idea came to me in a dream, so I'm making it a reality. I love Warrior Cats, and I love Undertale, and I tried once before to merge the two, only that didn't work because I wasn't as experienced in writing as I am now.
You don't need to understand Warriors to read this! It'll all be explained. The only similarities are the fact that the Sanses (and some not-Sanses) live in Clans, follow the Warrior Code (which will be explained in the introduction), they aren't cats (that's just weird), they have the same roles (tweaked a little because they aren't cats), they follow the same customs, and some other small similarities.
Kind of a slow burn. That's what I'm going for, anyway.
There may be a few toxic moments, but it's Nightmare, so it's fine. Right?
Art and characters (except for the Empathverse Sanses and Sigh) do not belong to me! Neither does Warrior Cats. Cover art belongs to ProductionRoxy. :D
My interpretation of the characters, but I'm keeping it as canon as possible. They're tweaked a little to match the Warriors setting.All Rights Reserved

angst badsanses cross crossover dream dreamtale dust error femalereader horror ink killer nightmare nightmarexreader sighnerd starsanses swap undertale undertaleau warriorcats xreader

Table of contents

52 parts

Sign up to add Forbidden [Nightmare!Sans x Reader] to your library and receive updates

or

Content Guidelines

You may also like

The Boy Who Doesn't Speak (Sans AUs) -- BEING REWRITTEN by SKSuperKitty

For some reason, Ink, the Creator and Protector of the Sans AUs, has decided that some of the Sanses of the Multiverse should go to highschool again. Honestly, no one really liked the idea, especially the Bad Sanses, including Ink's enemy, Error. Prince Nightmare is one of the AUs that must repeat these years of treachery. He basically only finished his actual highschool, and is NOT looking forward to having to do it again. Luckily his brother, Prince Dream, will be coming along the journey beside him. But Nightmare and Dream Are polar opposites, so Nightmare can't really get along with his brother's friends, nor Dream get along with Nightmare's, if he had any. With rules to follow and secrets to keep, Nightmare must go through highschool and not let slip the terrible things that happen at home. But then suddenly the two princes disappear. There's no trace as to who might've taken them, either. The only one that doesn't seem concerned is their own father, the king. King Sun-Beam. What is he hiding underneath all of those jewels and fake smiles? A/N: There is lemon/smut. So all you innocent people out there-- don't worry! Because I warn you at every chapter, and right before it happens. I designed the cover, but did the not the amazing artwork of Nightmare Sans. So credit goes to that person for the art. :D Update!!!!: This story is being rewitten. I'm making another book that'll just be this one but a little different. Once that's posted, I'll make another "chapter" in this one, giving a link to the rewrite. Thank you to everyone who still reads or checks up on this book. <3333

Andlátkyn; Vandr Sanses unin Alagaësia by FireladyofInk

(Title = Skeletons; Bad Sanses in Alagaësia) Error, the evil gang, and Blueberry were minding their own business in Outertale when Ink appears, alone. He decides to get rid of them, throwing them into the Void without second thought. When they awake, they're in a strange place with strange magic. A titanic struggle for power is happening all around them, and soon the god-like magical skeletons are wrapped up in the thick of it, fighting wars and forced to take sides. But they, being monsters, are made of magic. And it calls to them... Whispering of the future.. Singing of the past... A new race exists in Alagaësia. But perhaps they, like dragons, must change their ways to avoid the mistakes of the past... While their old Multiverse begins to collapse, sending more and more monsters into Alagaësia.. Forevermore changed.... Look for the sequel, Vanyalíkyn! https://www.wattpad.com/story/222035068?utm_source=android&utm_medium=link&utm_content=story_info&wp_page=story_details_button&wp_uname=FireladyofInk&wp_originator=kncoRAK2KLS7ot1C6fmFvwIUR71770liLYFEEy5GBCban6x8RliNFSM7BA9F%2FWj1t%2Bb87tO5hG2jk2uHaxPAmeYHHJ0FnFZCIEXyjJLNPbEAHTZ9Y6tlGOtwGLpBXGmQ [Eragon #7 ] [Nightmare Sans #7] [Blueberry #1] [Horrorsans #1] [Bad Sanses #1] [Reapersans #2] [Underverse #5] [Alagaësia #1] [Multifandom #33] [Errorsans #16] [Nightmare #28] [Long story #38] [Multiverse #68] [Crossover #794]

This life as Error Sans. by coolkidindahood

⪼A life where our beloved [Reader/REDACTED] died a very.. 'Fun' death. ⪼upon realizing their death, they'd realize that they reincarnated into error sans, a character they used to know as a kid. ⪼would [REDACTED] find out new things, new people, and keep up with their act? ⪼("SkReW yOu gOd!!1!".... huh?) ____________________________ ⚠︎{This story was made as a joke at first, the writing improves as time goes on. This story also contains swear words, No ships, And some grammar mistakes}⚠︎ ⪼(Cover made by me.) ____________________________ ⪼23/1/24 - #1 in Ink ⪼23/1/24 - #1 in Balance ⪼23/1/24 - #1 in Noships ⪼25/2/24 - #1 in Dreamsans ≫08/3/24 - #1 in Multiverse ⪼18/3/24 - #1 in Ausanses ≫29/3/24 - #1 in Inksans ≫30/3/24 - #1 in Undertale ≫03/4/24 - #1 in Reader ≫17/5/24 - #1 in Underverse ⪼24/6/24 - #1 in ErrorSans

The Stage is Set by Leothefirecub

So, I'm uploading this from my Ao3 account to my Wattpad account! So yeah! This is MY version of the Sans Au Multiverse. The X-event never happened, and Ink and Cross became close (like brothers, along with Reaper due to Ink being soulless, and the weird nature of Cross's). There are three 'new' Au's in this, those are my Au's, but they have never told their full backstory to anyone else. Not even to each other. But this isn't about them, yet, so lemme finish explaining this. So, Ink actually does care about the people in the Au's knowing that the creators can remake the Au, but not the people. Or his friends, so he protects them from the creators and the rewrites (or as he calls them resets). He fights for them and not the creators, while he and Error did have a truce, Ink couldn't save Error from the creators until recently. Most people knew that Ink didn't have a soul since he didn't hide it, but Error, Nightmare, and Killer (yes I ship the four of them) held out until he did (Ink has a soul now) to tell him how he feels, and Ink accepted and returned the feelings. And as this AU of the Multiverse I, as a/the creator, also play a role in this as well. Everything has worked out, meaning there isn't any fighting. They're all friends now. HOWEVER, I DO NOT OWN ANY OF THE CHARACTERS OTHER THAN GREEN, LEO, AND SAGE! OH YEAH, NIGHTMARE IS PASSIVE IN THIS MULTIVERSE. THEY FOUND A WAY TO CHANGE HIM BACK.

UNDERVERSE by isimpforanimeboys1

!THIS BOOK WILL NOT BE UPDATED!FOR FULL STORY, CHECK OUT JAKEI ON YOUTUBE AND PATREON! The story takes place in a post-Pacifist timeline in the original universe of Undertale, where half of Sans' soul is stolen by a corrupted alternate version of himself known as Cross, who has his Chara inside his body. With the help of Ink -the guardian of the AUs- Sans will travel through the Alternate Universes to recover his soul while he discovers the origin of Cross and the imminent danger that will put the Multiverse at risk: The Overwrite button. Undertale - Toby Fox XTale - Jakei Inktale/Ink - Comyet/Myebi Error - Crayon Queen Fresh - Crayon Queen Aftertale/Geno - Crayon Queen Dreamtale/Dream/Nightmare - Joku Underfell - AU Community (The creator wishes to remain anonymous) Underswap - AU Community (The creator wishes to remain anonymous) Outertale - 2mi127 Core! Frisk - Dokudoki Undernovela - Pig-Demon Killer! Sans - Rahafwabas Fatal! Error - Xedramon Mild Swear and Violence Warning. Hope yall enjoy my suffering :D (Original story by Jakei - Transcribed by isimpforanimeboys1) Hey! You've reached the bottom. Quick note, the editing in this is quite bad. I wrote this in 6th grade, and I'm not very proud of it. There are multiple mistakes, such as me calling Underswap!Chara Frisk, and referring to X!Chara as they/them. PLEASE DON'T PAY ATTENTION TO THESE MISTAKES. THANKS FOR READING THIS.

The Rogue Rebellion [Nightmare!Sans x Reader] [[SEQUEL TO FORBIDDEN]] by sighnerd

Warrior Cats x Undertale Multiverse Crossover ~~~~~~~~ None of the clans have seen Ash or the other rogues in years. Peace has settled among the clans, apart from the common small border skirmish. Nightmare and Y/N are expecting a daughter to arrive any minute. But there's always a calm before the storm. The eye of a hurricane. Ash is secretly planning his revenge, and when he comes, a darkness will fall over the clans like no other. Ash will not give up easily, and his band of rogues will fight by his side until their victory, or their death. ~~~~~~~~ Hello! It's me, Sighnerd. This is the sequel to Forbidden, so you should probably read that first!! I still don't really have drawings of ALL the characters, but I have some, so you'll have to deal with text descriptions until I have them all. If I find the motivation to make them all, that is. But I'll try to make the descriptions better and not forget characters one fourth of the way through the book haha. Again, you don't need to understand Warrior Cats. Everything is explained. I don't own most of the characters, but I own some! Nor do I own Warrior Cats. Cover art is by ProductionRoxy. Trying to keep the characters as canon as possible, but it's difficult when some of them- like Swad or Bird- don't have much information on them. But I'm trying!! It's easier with characters I own :]

Children of Darkness (Soul of Void) - [FGoD!Error Sans] by LunaRoAC

[HK/Undertale Crossover] For ages, the Void godness has to sit and see how her multiverse was fill and filled by AUs of her Universe, Undertale, she hated them at first, but now all her hate fall in their creator, Fate's spawn, Ink. For ages she has been incapabel to help those children of hers outside her Universe, the so-called Dark Sanses, the Guardian of Negativity, the God of Destruction and those under their protection, has to watch them beign hurt over and over again from the hands of their Universes or by the hand of the self preclaimed protectors of the Multiverse, the Star Sanses. When Destiny comes to her with a plan to put them in a safe place, she inmediatly agrees. Meanwhile, in another Multiverse, other Void God makes a deal with the ruler of Hallownest. The Pale King would give him back ALL of his children and then he would help him against the Infection caused by the Moth godness. So he is very confused (and a bit mad) when months later he can feel six more children enter to Hallownest without an explication.

Expectations and a Golden Stitch-A DreamError/Insomnia Fanfic by HappyWriter62

Dream always felt the weight of expectations on his shoulders and they've only grown worse now that he's a Star Sans. Save this AU, rescue that person, stop Nightmare over there, and make X person smile! It's a never-ending cycle of tasks and he gets asked more about why he hasn't done it sooner or defeated his brother yet than thanked for what he accomplished. He feels trapped in this position and doubts if he didn't have his positive aura that anyone would care for him. Most like him for the joy he brings or what he can give them. Nobody around him ever feels genuine without a doubt in his head. Add in the stress of protecting one Star Sans(Swap) and keeping the other(Ink) from starting trouble and you have a positive guardian ready to break under expectations. Then you have Error, the destroyer of AUs. His reputation speaks for himself and builds all the expectations he needs whenever he steps foot into another AU. He's as bad an omen as a black cat crossing your path. Others assume he is bad because of his "freakish" or glitching appearance. He has accepted these but it gets tiring when he already has the voices bossing him around or Fate reminding him that he should do more destruction. But he doesn't limit himself to destruction. He watches UnderNovela, admires the stars, and appreciates what he can. He pushes the limits of what is expected of him or disregards them completely. A trait that Dream eventually finds himself admiring in him, the known enemy of his friend. He knows that Error's feelings are genuine since he doesn't change in his presence(still an angry manchild). So when Dream gets wounded and stuck with Error on a whim, where will it take them? Will it be a mistake remaining in a hatred of enemies or will it change them both for the better? Could this admiration open Error up to corrupting Dream or will he be the influence Dream needs to against expectations and live for himself?

Discordance In The Balance (Nightmare and Dream x Corrupted! Reader) by Mysteriousghost102

After becoming friends with none other than the guardians of the tree of feelings, you realize more things are going on than the guardians care to reveal. After attempting to help them you end up corrupted and your friends trapped in stone for 500 years. . . Currently rewriting!! This is a sans x reader fanfic so don't like don't read. Reader is gender neutral and there is 18+ stuff in this book so please keep scrolling if you're under 18! So minors please avoid this like the plague There will be warnings at the beginning of chapters, if there's something I should put a warning for please tell me. Y/N = your name F/C = favorite color See anything else to put ill put it here /|\ ---WARNING--- This is mainly for fun and ideas put together from what my brain spews so continuity errors may happen and i will try to fix them accordingly. Again this is just for fun and nothing is really planned just improv to be honest. Still hope you enjoy! The cover was made by me

Become Mine And Mine Alone by harrish6

(REWRITE OF THIS BOOK IS UP! It is called "Obsessive Love".) (I do not own the cover, Undertale nor any of the characters besides my OC's, they belong to their respectful owner. For some reason, I just see Error in the front instead of passive Nightmare.) Error, Forced God of Destruction and Destroyer of Universes was largely unknown unlike Ink, the Creator and God of Creation. Their fights were unseen by the AU's, none of the Monsters knowing about the Destroyer as Ink doesn't want them scared and Error gave no shits if anyone knew him or not. But Error's job is a complicated one, one that he is forced into, and he has to get involved to destroy the worlds. He doesn't touch the Original AU's, but the copies that Ink makes have to go. It was only a matter of time before something happened. Ink, in a middle of one of their fights, blinded Error, hurting him much more badly then ever before. In panic, Error ported into one of the Original AU's. Ink, fearing what Error would do, tells Dream about the Destroyer. Now the hunt is on for the broken, blinded skeleton. Meanwhile a blinded Error has been taken under the wing of another powerful Monster who has fallen for the broken Destroyer at first sight. But sweet love is truly beyond him. It is a obsessive love, a unhealthy love unlike any other. Nightmare would do anything for Error, and would do anything to keep him by his side as he goes about taking over all the AU's. Now to convince Error that he should be his and his alone.

You may also like

Slide 1 of 10

The Boy Who Doesn't Speak (Sans AUs) -- BEING REWRITTEN cover

Andlátkyn; Vandr Sanses unin Alagaësia cover

This life as Error Sans. cover

The Stage is Set cover

UNDERVERSE cover

The Rogue Rebellion [Nightmare!Sans x Reader] [[SEQUEL TO FORBIDDEN]] cover

Children of Darkness (Soul of Void) - [FGoD!Error Sans] cover

Expectations and a Golden Stitch-A DreamError/Insomnia Fanfic cover

Discordance In The Balance (Nightmare and Dream x Corrupted! Reader) cover

Become Mine And Mine Alone cover

The Boy Who Doesn't Speak (Sans AUs) -- BEING REWRITTEN

For some reason, Ink, the Creator and Protector of the Sans AUs, has decided that some of the Sanses of the Multiverse should go to highschool again. Honestly, no one really liked the idea, especially the Bad Sanses, including Ink's enemy, Error. Prince Nightmare is one of the AUs that must repeat these years of treachery. He basically only finished his actual highschool, and is NOT looking forward to having to do it again. Luckily his brother, Prince Dream, will be coming along the journey beside him. But Nightmare and Dream Are polar opposites, so Nightmare can't really get along with his brother's friends, nor Dream get along with Nightmare's, if he had any. With rules to follow and secrets to keep, Nightmare must go through highschool and not let slip the terrible things that happen at home. But then suddenly the two princes disappear. There's no trace as to who might've taken them, either. The only one that doesn't seem concerned is their own father, the king. King Sun-Beam. What is he hiding underneath all of those jewels and fake smiles? A/N: There is lemon/smut. So all you innocent people out there-- don't worry! Because I warn you at every chapter, and right before it happens. I designed the cover, but did the not the amazing artwork of Nightmare Sans. So credit goes to that person for the art. :D Update!!!!: This story is being rewitten. I'm making another book that'll just be this one but a little different. Once that's posted, I'll make another "chapter" in this one, giving a link to the rewrite. Thank you to everyone who still reads or checks up on this book. <3333