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A Future Without Them by Baddrummer
Fandoms: Deltarune (Video Game), Undertale (Video Game)
01 Feb 2026
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Years pass. People grow. The world moves on without you. The Angel grew content with that for a while. It still hurt whenever they thought of the world that had long banished them, but something new pulled them out of the depths. Now, the Angel walks amongst friends who swear that they will not be banished. Kris, Susie, and Ralsei mean everything to them. Maybe this time, their banishment doesn't have to be as set in stone as they thought.
The Roaring comes. The light falters. Everyone falls.
A desperate connection is established in an attempt to save what remains of the Angel. If they fall, all hope will be lost. The world that banished the Angel long ago has forgotten them, but they have not forgotten it. This connection will have to be enough. Even if the rules have changed irrevocably, the Angel's one goal remains the same: Find them.
Series
- Part 3 of Clawing Toward What Hope Remains
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A Case Worth The Chase by Bugbee_Bugba
Fandoms: Undertale (Video Game), Underfell - Fandom, underswap, Swapfell - Fandom, Fellswap - Fandom, Horrortale - Fandom, Fellswap Gold - Fandom
01 Feb 2026
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Things didn't go as you thought they would when you stole from Erika Diamonds, of about 6 necklaces worth a god damn lot so you could support yourself and your family from living on the streets. A necessary evil, you reassure yourself.
Now, what would happen when you're confronted of your actions? In an alleyway, pinned flush against a wall, by a skeleton sweating bullets. Surely, escaping that horrid situation was the right call.
But was it really, when now 14 Halloween decorations are stalking you? And what's with those suits?!
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So, I don’t like how little stories there are of Ink having a mental breakdown. So I wrote him having a mental breakdown.
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Ink is laying on the ground. How did here. Why is he here?
He should get up.
He should go to work.
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I'm back with more backstory. I have picked twenty prompts from the badsansuary list, and split them into 4 each. Horror, Killer, Dust, Nightmare, and Error. I'll be posting them when the four for that character are done. they are out of order, and thus, not numbered.
As the backstories are so incredibly contradictory to normal au canon, i feel like this couldn't really be understood without reading NBATBAG.
Mostly beta read (some chapters arent)
enjoy?
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Disclaimers:
Several details in this fic are heavily inspired by 'Blue joins the bad sanses' comic, so go check that out
Canon innacuracies: Passive and Corrupted Nightmare are the same person, Ink is the creator and not the protector, Ink, Error, Nightmare, and Dream, are all gods, Blue, Killer, Horror, and Dust's specific au timelines were all destroyed, and i took liberties with how the void works. Also, no Cross sans will be mentioned, i don't know enough about underverse, and there will be some OC non-sans God/entity/things later on. The fic will be split into parts, each lasting nine chapters.
Schedule: Once a week, on Saturday, Sunday, or Monday, and i will post art or a reference sheet with every chapter. Trigger warnings will be specified in chapter notes. I've never written for undertale before, so please let me know what you guys think :3With that said, the actual plot: After an injured Error crashes into Nightmare and Co's home, a close bond starts to form between the two gods, both forced villains. In light of Ink's attempt to kill Error, Dream finally starts to lose it, and Blue gets dragged along.
Average chapter length is 500-2000
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A Female Gojo Satoru dies and somehow becomes Sans. Follow along as the strongest causes mayhem through time and space.
Gaster questions his life's choices. Papyrus wonders why his sister is like this. San's is just having the time of her life."Sans! No!"
"sans yes!"
Underground Chapters: 1-5
Surface/ trouble Chapters: 6-12
Alternate Universe Chapters: 13-? -
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I don't have a description for this, its just random Rambles from William mostly involving Heavens hierarchy.
ALSO this is NOT a fnaf fan fiction at all, these are my ocs
Series
- Part 1 of Rot In The Walls
- Language:
- English
- Words:
- 2,045
- Chapters:
- 2/?
- Hits:
- 3
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The massive fuckage of 2026 by St4rl1ght2763
Fandoms: Forsaken (Roblox), Hazbin Hotel (Cartoon), Deltarune (Video Game), Original Work, One Piece (Anime & Manga), Creatures Of Sonaria (Roblox), Battle For Dream Island (Web Series), Cookie Run (Video Game), Undertale (Video Game), school - Fandom
01 Feb 2026
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The Time Between by KayinDreemurr
Fandoms: Undertale (Video Game), Fallout (Video Games)
01 Feb 2026
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Two years before everything is going to truly change. Two years before the event which Frisk dreads and remains afraid of.
But two years is a long time, especially in a place like the Underground. And each and every day is one full of opportunities to explore, to experience, to live, laugh, and love. Frisk and the Monsters of the Undergound may be trapped under the Mountain still, but with the reunion of the King and Queen and the return of the Prince and gaining of a new one, the Underground is full of hope for the future.
These are the stories of the time between. The stories of Frisk and their family and friends as they live and prepare for what is to come.
Series
- Part 2 of A Better Future, Underground!
- Language:
- English
- Words:
- 2,822
- Chapters:
- 1/?
- Hits:
- 8
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For the Love of a Forest God by lylia9000 for Llama_Goddess
Fandoms: Undertale (Video Game)
01 Feb 2026
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Summary
"Please, god of the forest, allow me safe passage through your domain."
+ + +
You were raised as a traveling mage. Your grandfather molding you to fill his gigantic shoes after who knows how long he had been helping those in need with his magic. Now it was your turn, and as much as your family wished for you to settle down one day, you were so unaccustomed to sitting still, that it seemed impossible. But between training your youngest sister to be the next mage in the family and the rising tensions between the magic of the forests and the politics of the nearby kingdom, it might be time to find somewhere safe to stay. Luckily for you, three different forest gods would be more than happy to have a powerful mage, and their apprentice stay with them.
Arc 1 - Sprouts 'Neath the Canopy- (1 ~ ??)
Arc 2 - Mage of the Forest - (?? ~ ??)
Arc 3 - The Nature of Magic - (?? ~ ??) -
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‘What a day!’ Tanya thought as she drove out of the skeleton’s gigantic mansion driveway with her pretty pink corvette.
She didn’t really expect herself to be moving in with an old friend of hers but what was life without uncertainty and surprises? If her ex hadn’t decided to sell all his possessions — including the apartment they lived in to take a spiritual break in the Himalayan mountains she wouldn’t even be here in the first place! Reunited with her old friend!
Or, a rather dumb take on the anti-harem stories. Usually our antagonist happens to be a girly girl who loves shopping and all whilst the Reader is someone who loves to reads books and is nerdy. So I’ve decided it might be fun to write one where their positions are swapped!
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make no mistake, that's what he heard. Frisk had fallen down into a hostile world, what appeared to be out to get him. then there was a human, one who hated her species with a burning passion. but will an encounter of the two change that? and what else will happen with Frisk's adventures?
[Frisk is 16 and Chara is 19]
Series
- Part 1 of My Undertale AU Stuff
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His sockets caught the light from the screen, violet bright and unguarded. For the first time since they met, he looked openly awed instead of lost. It suited him. Blue found himself smiling without thinking.
Somewhere in the back of his mind, a quieter thought followed. He wanted to keep it that way. Not because others didn’t deserve to smile too. Just… Nightmare especially.
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Megaverse (might change later) (insert oc au) by LeCaptainPancakes
Fandoms: Undertale (Video Game), Primeverse - Fandom
31 Jan 2026
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(Warning this is an insert character au)
ℂ𝕒𝕡𝕥𝕒𝕚𝕟 𝕒𝕟𝕕 𝕊𝕔𝕒𝕝𝕖𝕤 𝕙𝕒𝕕 𝕓𝕖𝕖𝕟 𝕒𝕥 𝕖𝕒𝕔𝕙 𝕠𝕥𝕙𝕖𝕣𝕤 𝕥𝕙𝕣𝕠𝕒𝕥𝕤 𝕗𝕠𝕣 𝕠𝕧𝕖𝕣 10 𝕪𝕖𝕒𝕣𝕤 𝕟𝕠𝕨, 𝕓𝕦𝕥 𝕒𝕗𝕥𝕖𝕣 𝕚𝕥 𝕚𝕤 𝕣𝕖𝕧𝕖𝕒𝕝𝕖𝕕 𝕥𝕙𝕒𝕥 𝕖𝕧𝕖𝕣𝕪𝕥𝕙𝕚𝕟𝕘 𝕊𝕔𝕒𝕝𝕖𝕤 𝕕𝕚𝕕 𝕨𝕒𝕤 𝕟𝕠𝕥 𝕚𝕟𝕥𝕖𝕟𝕥𝕚𝕠𝕟𝕒𝕝 𝕥𝕙𝕖𝕪 𝕤𝕖𝕖𝕞 𝕥𝕠 𝕓𝕖 𝕒𝕥 𝕒 '𝕥𝕣𝕦𝕔𝕖'.
𝔹𝕦𝕥 𝕟𝕠𝕨 ℂ𝕒𝕡𝕥𝕒𝕚𝕟 𝕘𝕖𝕥'𝕤 𝕤𝕖𝕟𝕥 𝕥𝕠 𝕒𝕟𝕠𝕥𝕙𝕖𝕣 𝕦𝕟𝕚𝕧𝕖𝕣𝕤𝕖, 𝕒𝕟𝕕 𝕒𝕔𝕔𝕚𝕕𝕖𝕟𝕥𝕒𝕝𝕝𝕪 𝕥𝕒𝕜𝕚𝕟𝕘 𝕊𝕔𝕒𝕝𝕖𝕤 𝕨𝕚𝕥𝕙 𝕙𝕚𝕞.
ℕ𝕠𝕨 𝕥𝕙𝕒𝕥 𝕥𝕙𝕖𝕪 𝕒𝕣𝕖 𝕚𝕟 𝕒 𝕨𝕙𝕠𝕝𝕖 𝕟𝕖𝕨 𝕆𝕞𝕟𝕚𝕧𝕖𝕣𝕤𝕖, 𝕙𝕠𝕨 𝕨𝕚𝕝𝕝 𝕥𝕙𝕖𝕪 𝕘𝕖𝕥 𝕙𝕠𝕞𝕖? 𝕎𝕚𝕝𝕝 𝕥𝕙𝕖𝕪 𝕘𝕖𝕥 𝕙𝕠𝕞𝕖? 𝔻𝕠 𝕥𝕙𝕖𝕪 𝕖𝕧𝕖𝕟 𝕨𝕒𝕟𝕥 𝕥𝕠 𝕘𝕠 𝕙𝕠𝕞𝕖 𝕒𝕟𝕪𝕞𝕠𝕣𝕖...?
Or in other words, Scales and Captain get sent to a undertale multiverse inside of the undertale Omniverse.
I just edited some random Canva template for the cover lmaoo
Characters:
Captain: My character (From primeverse)
Scales: My au (From mythictale)And most other undertale au characters, I'm too lazy to list them all, but I'm sure most of y'all know where these characters are from so I shouldn't need to explain em lol.
- Language:
- English
- Words:
- 2,175
- Chapters:
- 1/?
- Hits:
- 2
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Ebott City, 1934.
Mob boss Carmine (formerly Sans) meets an alluring and mysterious lounge singer, Lux (also formerly Sans). Intense attraction makes the skeletons long for romance, except their pasts and prior obligations make their relationship anything but simple. Things only get more complicated by monster kidnappings, the human mafia, Magic Prohibition, and the chance that they are soulmates despite being from two different universes.
Love is a risk they can’t afford.
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UDY on the Surface by CommanderBullet
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
31 Jan 2026
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It's been a few years since Monsters returned to the Surface and lots of things have changed... Accompany your favorite characters from Undertale, Undertale Yellow and Deltarune as they try to manage their everyday responsibilities and go through a few wacky adventures while at it in this slice-of-life crossover AU.
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There is a man in her house. Toriel has no idea how he got here.
He was dripping wet like the kids were. He has a TV for a head. He appeared after the bright light came out of the television that had been dropped on the floor.
She should have glass shards, a broken CRT, and several puddles to clean up. Instead she only has puddles to clean up since instead the TV is attached to a body and it’s laying on her couch right now.
Or: Toriel learns her TV is alive. And a father apparently. She's certainly...confused, but housing him is the least she can do to try to ignore the guilt of not knowing her objects were alive. It's just..an adjustment.
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Monsters came out of the mountain last year. An unknown number societies filled with creatures small enough to be held with one or two hands. Without their Core, their Souls need to gain ‘magic’ from Human Souls caring for them. So of course, shops popped up all over the place advertising different ‘varieties’ of ‘Bitties’ for Humans to ‘adopt’.
I’ve seen plenty of these poor little creatures up close and I’m telling you, these are tiny people who deserve more than pet status. Not to mention the fighting rings. There’s intelligence in their eyes that I don’t even see in half the Human people I encounter. Not that I’m particularly interested in encountering people. My street cat Emily and I prefer staying at home, making just enough money off of my video game streaming to stay afloat.
Emily is an odd cat. She came into my life freshly pregnant and demanding to be my cat. Her cool as fuck skeletal pattern gave me the idea to keep my identity online a secret by slapping on skeletal face paint. The viewers love it.
Sadly, Emily gave birth just a few nights ago, to a litter of stillborns. She’s been beyond miserable. She goes out every night now, I’m really worried about her.
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Aliza is queen of the Underground. She did not want this for herself, but she truly has no choice.
This role is like a prison, a guilded cage, and she must act as perfect as can be...Or her jailer might make things worse.
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You're a spy who is ordered to spy on the queen of monsters but two skeletons get in your way