Nightmaregang Stories

[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...

After dying, someone is reincarnated as a Shadow Papyri and settles into a routine. However, that routine seems to be continuously disturbed and constantly needs to be a...

originally posted this on AO3 and decided to repost here. just some one shots about our favorite creepy crawly parasite. (also the cover is mine.)

What if...no one even appreciates reaper for all that he does as death? What if..even those on yin side hated him? Well not everyone but he doesn't know that there are a...

(Obsessed)Nightmare Sans x Blind Reader Trigger Warning! Abuse! For Mature Audiences ~~~ Y/n has known nothing but darkness her entire life. Blinded by the cruelty of h...

#3 out of 8k stories tagged as Ink (>.<) Omen was created as the Guardian of Hope and, indirectly, healing. If anybody can help the balancers of this multiverse, i...

A bunch of story pieces that I lost motivation for, changed the concept of, or that were otherwise sitting in my drafts for much too long. No, they have not been edited...

Cherry, an unusual swap-sans type, draws the attention of Dream and Nightmare when he is left the only survivor in his underground. With his Papy's gaster blasters follo...

After being trapped in a research facility for their entire life, babybones Cookie finally finds themself in the ocean, free to explore the place that should always have...

Today was a good day, their raid went perfectly fine and they got everything they needed without the Stars sanses coming to annoy them, he even had some quiet time when...

Y/N and Papyrus tries to go back to the first timeline in undertale, to stop the wars in the AU's but something goes wrong. what will Y/N and Papyrus do? Made at 17-12-1...

She had died laughing. Her parents had killed her siblings. She had let it happen. Despite promising to protect them, she let them die. Maybe that's why she ended up reb...

(This is a re-work of my old fanfic, and the original idea of this is M1lun4 while the Fgod is from Harrish6 the cover of the book was made by me, please do not steal it...

Error Sans had enough of Ink's Creativity so he stop destroying. Ink never realized it until the multiverse collapse. What will they do now?

Cross... Was a complicated individual. If you asked someone to describe him 'Complicated' would no doubt be used. However what many people didn't know was that Cross had...

Someone dies and is Reborn as Sans. Not just any normal Sans like they assume as first, but a HORROR Sans. As if dealing with Gaster when they were young wasn't enough...

So guys you Maybe expect here a Descripion but here will be non becous im really bad at something like that, but i can say thats not a FGOD story! i do like thos but the...

Every single Sans in the Undertale AUs know about Dream and Nightmare, after all, they used to be the protectors of the Tree of Feeling. If it weren't for them, then no...

oof ok so this is what happen ' Error and nightmare gang was invited to a small get along party that blue though would be grate after that all made a truce and 1 dare le...

a story about a multiverse chaos happening around the whole multiverse , and this is the story that what happen in the outertale . it gonna have multiverse characters li...