OreoCookie1129

In order to be seen as not soft Nightmare buries his feelings down deeper than his soul. What will happen when those feelings start to rise to the surface. Will there be kindness in his soul, or will his soul forever be a pile of goo. Killer and you will have to see!…

derpynat447

Killer falls for her English teacher Mr Nightmare after transferring to her new school. Nightmare often stares at her body and thinks of lewd things involving Killer. On a school camping trip Killer shares a tent with Nightmare. And....um Nightmare? Why do you have a gag?…

ErrorSans_AU

read the titleCome join me and our amazing adventure through the many Ships and even many Multiverse AU's like DreamSwap and NaJNo sweat! I hope you all come and have all the fun you could ever possibly have ^^No images and videos that are used belong to me, they all belong to their respective owners!…

Nightmarezmare

This story includes from what is based off the title, includes swadmare lemon, but only a small percentage (lemon scares me) Check my profile for information when i post ‼️ Just to clarify, this story doesn't start like when nightmare meets swad, it's just straight to the story.Warning :Thing stories includes forced love, manipulation, abuse, 🍇 and death. If this story is too triggering for you, I suggest to not read it…

Undertale_tRaSh_4U

What would happen when the Star Sanses have to face their own fears?Will they overcome them?Or will they crumble in their own terror, fears, and regretsHow will Nightmare's plan come to be?Has Reached #1 in CcinoHas Reached #1 in Bluesans…

Friskk

this is prob cringe but I think im funny lolships are in tagsnone of these characters belong to me this might be funny might be triggering, be warnedcharacters belong to:-Cross belongs to Jakei95 (aka. JakaeiArtworks)-Error and Geno (and Fresh who isn't in this story LOL) belongs to Lover of Piggies(also known as Crayon Queen or CQ for short)-Dust belongs to an Ask-DustTale Blog (idk if this is correct or not)-Horror belongs to Sour-Apple-Studios-Killer belongs to Rahafwabas-Blue belongs to P0pc0rnPr1nce-Ink belongs to Mye Bi (Comyet)-Nightmare and Dream belong to Jokublog-Lust belongs to NSFWShamecave -Reaper belongs to Ren…

SpiritWolfNura

Blue is sick of being treated like a child by his friends and family. He shoves down his negativity in order to stay 'happy' like they want though. Nightmare has had enough of this and steps in to be Blue's knight in goopy armor.…

April_Gianttale

The title says it all. If you don't like vore, leave or your gonna have a firey time. Those who love vore... I hope you enjoy. I also take request.Some of the parts in these stories do not belong to me. Credit to the original owners…

Azthesecond

It was a normal day for nightmare, spreading negativity to every au. But what happens When the hears the sobs of children? He can't help but feel a little connection to themAges:Dust:6Error:2Horror:1Killer:10Nightmare:250Where they all are currently living Dust and error- dust ran away from home and was living in an alleyway covered in trash bins perfect for hiding. A few days later he found error in a trash bag while looking for food, he decided to raise error as his younger brother and continue his life.Killer and horror- Killer had been abandoned from his parents and was now living on the streets. After a while of walking to find a spot to stay he finds a bleeding skeleton on the road with a crack in his skull. It's a miracle the little skeleton survived and killer was going to raise him all by himself.Nightmare: This negative guardian lives in his goopy castle. He is very lonely and sometimes wishes for company.Characters in this book:DreamBlueInkErrorDustKillerHorror Nightmare…

Atlas9090090

The bad sanses and star sanses got a letter from sci to meet him at his lab. But I wonder what dose he want or need guess we have to find out. Or was it really sci who sent the letter at all?Characters Nightmare ErrorKillerDustHorrorLustInk DreamBlueberry or blue…

UnderTaleHyperFixed

Someone dies and are reborn as a Shadow Papyrus. Let's see how thet deal with it shall we?…

FallenAsleepYetAgain

You can never have too much gay. Nightmare x Blue is like,,, one of my favorite ships of all time and I tend to uh, write like a lot about them. I need a place to dump it all so here we are.You can give suggestions/requests I don't mind. If you don't like the ship then that's okay, just keep scrolling my dude.…

LtHunter

(This book is completed, if you want more stuff there's a second one) just some one-shots of Undertale AU ships. I do not own any of these characters (unless state otherwise). I try to update twice a week.…

NightDragon574

I have seen multiple people's head cannons and decided to add mine These are NOT cannon, don't take these as fact. You can use these in your stories thoughUndertale belongs to Toby Fox, all characters belong to their respective owners…

__Purple_Fluffball__

Dear, Nightmare, Cross, Error, Dust, Horror, Killer, Lust, Reaper, Geno, Ink, Dream, BlueHey guys, It's me...Sci,So uh, I've just discovered something really cool. And I mean like, really cool. I was wandering if ALL of you could come down to my lab this afternoon so I can show you this thing.I promise you'll love it!-Sci-Nightmare frowned and looked at Error, who had been reading over his shoulder. He simply shrugged in response. "Eh, might as well, I'm bored and we've got nothing to do. What could possibly go wrong?"What could possibly go wrong...?Ehehehehe I wonder.…

Suspicious_Glitch_

The title says it all, I just got back into Sans AUs and wanna make stories with them.Read the first chapter for more info. Cover art not made by me.…

Shadowolfie2008

Enjoy these one shots[⚠️ WARNING ⚠️ MATURE CONTENT]…

AqilahDaWinterWolf

Request closeDrawing by I don't know…

soyunaotaku0512

Killer ends up in a small trouble, I said small? I don't think having a baby of the Nightmare is just a little problem.How will killer solve this? Will he be able to hide it from Nightmare or will he have to make the most painful decision of his life?Read this book to find out ;b…