Completely Nightmare
20 stories
Nightmare's time off (Going Through Editing) by doritoperson
doritoperson
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Nightmare is tired...he's tired of dealing with the bad sanses he's tired of the star sanses...he's stressed no matter what he does a sans will always mess up his plans even his own group he can't stand their fighting..while he's stressing a voice..a special voice he had not heard in years a voice he thought had faded away a long time ago was back....passive!nightmare?...What will nightmare do when passive!nightmare tells him of a easy escape of everything..will nightmare take it? Even if he does will it be that easy? After all one you dig a hole it's hard to get out... (Note:I'm a faster speller and half the time I don't see my mistakes also I suck at grammar also none of the sanses belong to me they belong to their respected owners cover not by me)
Against the Odds (A Crossmare Fanfiction)   by __Purple_Fluffball__
__Purple_Fluffball__
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For the Crossmare anniversary uwu This is a hunger games Undertale crossover because I'm starting to run out of original ideas. --- "I-I dreamed it was m-me... M-My name was p-pulled out." "I know, I know..." He whispered, pressing the smaller's face into his chest. "But it's not real. Your name will only be in there once, they're not going to pick you." "B-But if th-they d--" "They won't Chara, they won't." He closed his eyes, gently rocking his brother in his arms. He could remember having horrible nightmares the day before the Reaping. It happened to everyone. Fear could do just about anything to someone."It won't be you, I promise." "You can't promise s-something like that..." He mumbled weakly. "Watch me." He smiled softly, pressing a kiss against Chara's forehead. The smaller tried to return the smile, but couldn't. "A-And what if you're the one picked?" Cross shook his head softly, rubbing his back. "I wont be Chara, I won't be." "Promise?" He whispered, looking up at him with watering eyes. He nodded, gently wiping the tears away with his thumbs. "I promise it won't be either of us, okay?" "You never break a promise..." "Exactly." --- uwu Cover Credit: Pea_Neko on Pintrest
Start Over {An AU Fanfic} by IcyWritesStuff
IcyWritesStuff
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After several attempts, Sci finds a way to return Nightmare to his uncorrupted form, turning him good once more. But as soon as Nightmares old team finds out they plan to do everything in there power to turn him back. {Credit to artist for cover!}
Diamond Nightmare by TammyTheHuman
TammyTheHuman
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    Parts 12
Nightmare had hit his breaking point, and ate the apples. Powered by their corruption, he was covered in negativity and fed off of the villagers fear before killing them. His brother's voice got through to him before he petrified him though, and Nightmare ran. He soon woke up in an unknown place, a gem embedded into his chest and a battle happening near him. What is a 'monster' like him to do?
Shadowed Moon by Firehedgehog
Firehedgehog
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An apple bit, a moon split into two. Passive and Corruption. Fate shows her hands, and Nightmare... no Corruption continues to search for a way to save Passive from Fates fate. Adopted idea 'A ErryNight' by @MoonAndStarsAlign
I Chose to Run Instead of Breaking by Firehedgehog
Firehedgehog
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    Parts 22
Nightmare ran away... not waiting till the villagers broke him, and found happiness in an AU hat was sans a Sans. Meanwhile someone else stole Nightmare's identity, leaving cannon story to continue. The real Nightmare, just wished his name hadn't been tainted. Based on the Idea Factory idea Run away, warning the Muse for this story is ChaosDancer12
Bitter Taste by SairenBlade
SairenBlade
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The bad sanses and the stars were fighting for many years.Now..it's the time to stop these useless battles and make a treaty for the two team. Both of the team wanted this.Nightmare,on the other hand doesn't approve. But one day,Dream found an antitode to turn Nightmare back to normal and live peacefully.However,something terribly went wrong. Did Dream CURE or KILL his brother? Who knows? (■N.B-In this Timeline,Dream only told Science sans that Nightmare is his brother and he has a passive form.No one knows)
Mama Nootmare by HotaruBlue13
HotaruBlue13
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Warning: Art is not mine!! Undertale is not mine or any of the Au's!! I only own the plot line, kinda!! This just started just an idea, then I made it into something, sooo, here you go! --- Nightmare lived on the Earth for a long, long time, he's seen it all, but when an outbreak that causes humans scientists to go after young skeletons. Nightmare can't help but be pissed!
Nightmare And The Babybone Sanses by sirsen
sirsen
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When Nightmare said he wanted a group of monsters that would be loyal to only him and cause mayhem, he didn't mean four babybone brats. Now he has to take care of them while also trying to train them to become the perfect group of monsters that he wanted when they grow up.