Sans AU's headcannons

Sans AU's headcannons

Marshmallowchaos

Reads 215
Votes 26
Parts 22

MatureComplete Wed, Nov 29, 20235m

billerror404 bloodlustkillmare creampic cross dream

Headcannons of sans AU's

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DISCONT | Omen [Undertale Multiverse]
#3 out of 8k stories tagged as Ink ***REWRITE HAS BEEN POSTED! Please disregard this version ^^
CRIMINAL AMNESIAC
When Dream loses his memories after receiving severe head trauma in battle, Nightmare and his team choose to take advantage of the situation...
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The One Thing That They Care About (Sans AU x Reader x Papyrus AU)
Y/n L/n. A special human with a special SOUL. Yes, her Soul Trait is something new. But other than her SOUL trait she has another secret. One day, while she was at the surface with Frisk and Sans. 6 skeletons appeared out of nowhere, making raging screams and chaos as maniac laughter filled the air in their wake. Soon they found Classic Sans with Y/n & Frisk. But when they saw Y/n, they were curious of how she can wield magic powers and be brave. Soon they took Y/N with them, to their castle. Will Y/n tame them? Or will Y/n fail and suffer the consequences? Involving a Bad Sanses x Reader x Star Sanses plot. Along with various Alternate Sanses. #1 in badsanses at 17/01/2021 #1 in ausanses at 31/01/2021 #2 (Out of 21.8K) in nightmare at 24/02/2021 #38 (Out of 48.1K) in undertale at 21/05/2021 #3 in (Out of 3.42k) Cross at 18/12/2021 #1 in Dust (Out if 2.15k) at 18/12/2021
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Walking These Halls
Sans Aus in a school what could go wrong? Lots of things, do people die? I don't know, but ships are included. You could say it is a slow burn kinda thing or it went pretty quick, but chaos ensues and it isn't my fault. (FandomError)
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Bad guy Sans's
Dust's fiance is Blueberry Cross's husband(/wife) is Dream Nightmares boyfriend is Killer Horrors boyfriend is Lust Errors husband(/wife) is Ink Samuel, Scrooge, and Dark are Nightmare and Killers kids Lurro, Tacky, Desire, and Luxath are Horror and Lusts kids Nightmare, killer, Lust, Horror and the kids all live in Nightmares mansion in Dreamtale. Dust and Cross used to live here until they moved in with their boyfriends. Error live here for less than a week befor he decided that he preferred to do his evil business alone. Now all the bad Sans's(including error) are retired and living the rest of their lives with the ones they love.... That doesn't mean that they're nice or good or non murderous. It just means they're not looking for trouble any more. It tends to come to them. But boardom is their worst enemy now. Nightmare likes to stay in his non corrupt form, it attracts too much attention for obvious reasons.
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AU! Sanses x Reader Oneshots! (DISCONTINUED)
Cover by @sergeantmisos on Twitter. Likely not to be updated for at least a few years. So sorry <3 undertale and its aus aren't really something I'm fixated on anymore!
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Blind Love (Reader X Nightmare Sans)
(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 her past, she navigates the world with cautious steps, haunted by the scars of her abusive upbringing. Yet, amidst the shadows that cloud her existence, she discovers a glimmer of hope in the form of a mysterious stranger who watches her from afar. Nightmare Sans is captivated by Y/N's ethereal beauty and resilient spirit. Obsessed with unravelling the mysteries shrouding her life, he becomes entangled in a dangerous game of cat and mouse, risking everything to protect the object of his affection. Wondering who exactly is in control, a lonely boy only desiring love, or a manipulative shadow? As their lives intertwine, Y/n and Nightmare find themselves drawn into a whirlwind of danger and desire, their fates bound by an invisible thread that defies logic and reason. But as secrets are revealed and dark truths come to light, they must confront their deepest fears and confront the shadows of their pasts.
Distrust
Dust trusts his fellow Bad Sanses with his life, but when he gets betrayed he leaves the Bad Sanses and hides in the Omega Timeline. Dream and Cross do the best they can to help Dust, but Dust has vowed to never trust anyone ever again. This is based on the Rusttale multiverse so things may be slightly different than you expect.
Complete
To Kill A Killer
Nightmare's gang always knew that their job was risky, but they never expected to actually die. Then Killer was killed. Nightmare found a replacement quickly enough, but this new Killer isn't the same as the old one, and the gang are having a hard time adjusting. Inspired by a comic by darkxsoulzyxcaliberx. Something New belongs to rahafwabas. Dusttale belongs to Ask-Dusttale. Dreamtale belongs to Joku. Horrortale belongs to Sour-Apple-Studios. Xtale and Underverse belong to Jakei. Underswap belongs to p0pcornPr1nce/the Undertale AU community. Ink!Sans belongs to Comyet. Any other characters and AUs mentioned belong to their original creators. All art by me. A huge thank you to my partner for beta-reading.
What's so funny about HoPe, MERCY and the Pacifist way?
The right thing to do: everyone has their definition of right and wrong. Should you always follow your morals? Or is sometimes the right thing to do to abandon them, to sacrifice them for the sake of everyone else's safety? Error, Nightmare and the Gang know no MERCY. No matter how many times they're defeated, they never stop hurting people. Will the Stars keep following their morals? Or have HoPe, MERCY and the Pacifist way become obsolete?
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I Found You My Dear Inkmare fanfic
When Ink is exploring the au's, he stumbles upon a new au where he meets a new friend named Nightmare. The both of them create a close bond, and Nightmare explains how the villagers mistreats him and how they treasure Dream. Ink knew Dream for awhile, but Dream never mentions Nightmare. One day Nightmare had enough of the villagers and ate the apple of negativity and leaves Dreamtale empty. When Ink comes to visit Nightmare, he sees that everyone is disappeared, and so did Nightmare. Not mention Dreams new and unusual behaviour towards Ink. [All artworks in this story, including the cover, belong to me. I kindly ask that you DO NOT use them, post them, trace/edit them, or claim them as yours. It's rude and highly frowned upon. Thank you.]
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Given An Unwanted Second Chance
(TW: unaliving thoughts and memories at the beginning. It gets better over time, don't worry! Trauma is difficult to overcome...) You didn't want a second chance. You didn't want to survive. You wanted the sweet release of death. But it seemed like the universe was far too cruel to allow you even that. It took away your memories, your free will to choose whether you live or die...hell, it took the one thing in life you owned! Your own name! And now it seemed like you had to live yet another cruel life, doing things you never wanted done to others. But...at least you could do things your way. Maybe this second chance wouldn't be so bad... (Reincarnated as Nightmare Sans, but unlike other stories, you have no clue what Undertale even is) (WE REACHED NUMBER 1 IN THE UNDERTALE TAG YOOOOOOOO) (9/13/25)
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Nightkiller
....Not all storys have happy endings.... Ships: DustHorror Inkerror Killermare Cream Lustberry-ish
Complete
utau oneshots
reposts of stories i wrote for ut au because i found them by accident in my docs and some of them slap im ngl
Complete
Under rewrite [lore] [evil lux au]
Welcome to the lore of [E.L.A]
Sanscest One-Shots (old)
This is a bunch of Undertale one-shots. And a bunch of Undertale and Undertale AU ships. Most of these ideas I wanted for books but, don't have enough time nor ideas. The cover isn't mine. Also, all of the characters aren't mine. I'm just giving them the credit even if I don't know all of the creators of the characters.
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liaison 🩹
𝐍𝐢𝐠𝐡𝐭𝐦𝐚𝐫𝐞 𝐡𝐚𝐬 𝐠𝐫𝐨𝐰𝐧 𝐢𝐧𝐬𝐚𝐧𝐞. 𝐇𝐞 𝐧𝐨 𝐥𝐨𝐧𝐠𝐞𝐫 𝐞𝐱𝐢𝐬𝐭𝐬. 𝐈𝐭 𝐜𝐚𝐮𝐬𝐞𝐬 𝐦𝐚𝐧𝐲 𝐭𝐨 𝐟𝐞𝐞𝐥 𝐞𝐦𝐩𝐭𝐲 𝐚𝐧𝐝 𝐥𝐢𝐭𝐭𝐥𝐞 𝐦𝐨𝐧𝐬𝐭𝐞𝐫𝐬 𝐚𝐫𝐨𝐮𝐧𝐝 𝐭𝐡𝐞 𝐦𝐮𝐥𝐭𝐢𝐯𝐞𝐫𝐬𝐞. 𝐈𝐭 𝐢𝐬 𝐝𝐫𝐞𝐚𝐦𝐬 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐜𝐚𝐫𝐞 𝐨𝐟 𝐭𝐡𝐞𝐦. 𝐈𝐧 𝐭𝐡𝐞 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐭𝐡𝐨𝐮𝐠𝐡, 𝐂𝐫𝐨𝐬𝐬 𝐛𝐞𝐜𝐨𝐦𝐞𝐬 𝐜𝐨𝐧𝐜𝐞𝐫𝐧𝐞𝐝 𝐚𝐧𝐝 𝐰𝐨𝐫𝐤𝐬 𝐚𝐥𝐨𝐧𝐠 𝐬𝐢𝐝𝐞 𝐝𝐫𝐞𝐚𝐦. 𝐇𝐞 𝐬𝐭𝐚𝐫𝐭𝐬 𝐭𝐨 𝐠𝐫𝐨𝐰 𝐟𝐞𝐞𝐥𝐢𝐧𝐠𝐬 𝐟𝐨𝐫 𝐝𝐫𝐞𝐚𝐦 𝐭𝐚𝐤𝐢𝐧𝐠 𝐡𝐢𝐦 𝐚 𝐰𝐡𝐢𝐥𝐞 𝐭𝐨 𝐜𝐨𝐧𝐟𝐞𝐬𝐬.. 𝐀𝐥𝐨𝐧𝐠 𝐬𝐢𝐝𝐞 𝐨𝐭𝐡𝐞𝐫 𝐜𝐨𝐮𝐧𝐭𝐞𝐫𝐩𝐚𝐫𝐭𝐬 𝐭𝐡𝐞 𝐬𝐭𝐨𝐫𝐲 𝐛𝐞𝐠𝐢𝐧𝐬 𝐭𝐨 𝐠𝐞𝐭 𝐛𝐞𝐭𝐭𝐞𝐫, 𝐛𝐮𝐭 𝐚𝐥𝐬𝐨 𝐚 𝐥𝐨𝐭 𝐰𝐨𝐫𝐬𝐞. ✦ THIS STORY HAS TRIGGERING TOPICS SUCH AS DEPRESSION AND SUICIDAL THOUGHTS !! IF YOUR SENSITIVE TO THOSE TOPICS I SUGGEST NOT READING !! ✦ART IS MINE
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[DISCONTINUED] Undertale AUs x reader
Just some Undertale and AUs x reader for funsies <3 Happy 2025!!
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DISCONT | Omen [Undertale Multiverse]

#3 out of 8k stories tagged as Ink ***REWRITE HAS BEEN POSTED! Please disregard this version ^^

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