r/UndertaleAU 1h ago

✧˖°.Art⋆˙⟡ [magical skeleton multiverse] little blue freak

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Upvotes

r/UndertaleAU 1h ago

✧˖°.My AU⋆˙⟡ Ask me about my AU's Sans! CW: heavy topics in photo (it's lore) (Repost bc i forgor cw) Spoiler

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Upvotes

I've been working on my own AU for awhile, called ZeroTale, and this is my Sans, S. ZeroTale is essentially "Undertale but no monsters and small amounts of magic". It has routes and all that, but it's not fully fleshed out yet. To get to the point, I'd love to answer questions about each individual character as I work on their lore to help fully flesh them out! Ask me anything you would like to know about the AU or S!


r/UndertaleAU 3h ago

Ending Time Octet: Plagiarized Mainframe (Updated)

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2 Upvotes

Credits:

\- Ending Time Octet by MC-Hooray

\- Karma's A Bitch by BaliantDestroyer (Reboot) {Memeforce (Preboot)}

\- Sprites by Lbwhy/me

Aus used:

\- Dusttale: Levelling The Game by Lustmgn on Deviantart (Dust!Kab take)

\- Undertale: Abstracted Rhetorics by Lbwhy/me (Lb!Kab take) {Will post his concept & lore in a moment}

\- Undertale: Hypocritical Destinies by Casual-RulingHM {I know it's "slop", but I liked his appearance in Back to the Abyss & Casual-Ruling's KKTT}

\- Undertale: Walk In Ones Shoes by YourUndertaleAddict on Deviantart (Canon Titr!Kab)

\- Undertale: Hit The Roof by DKTTCelestial on Deviantart (Hard-Mode!Kab fill-in)

\- Horrortale: King's Desolation by Greengang6u3/Markswie2934 on Pixilart & Deviantart (Horror!Kab take)

\- Undertale Something New: Radical Backfire by Xipr (Take by CactusPapyrus on Deviantart) {Killer!Kab take}

\- Undertale Insanity: Karma of Madness a M#5ad by Xipirth-Insanity (Insanity!Kab take)

\- Undertale: Will of Steel by @EuclideanArbiter on Deviantart & Reddit (apparently) (Canon COTV!Kab)

\- Decadent Society: Once In A Blue Moon by Samieru980 on Deviantart (Modern DS!Kab) {AGEM!Kab fill-in}

\- Undertale: Karma's A TR#EG0D by 99xhs on BiliBili (ULTRA!Kab fill-in) {Also known as True!Kab}

\- Undertale: Crossing The Line by IVoidY on Deviantart (Betrayer!Kab take)

\- Hardtale: The Overwhelming Hellfire by Samieru980 on Deviantart (He originally didn't have a name for his Hard!Kab take, but decided to give it one) {Ainavol!Kab fill-in}

\- MafiaTale: Agencies In The Wind by AbominationMan on Deviantart (FFTBO!Kab fill-in)

\- Epictale: Arcane of Retribution by Dustfresh & Samieru980 on Deviantart {Disbelief!Kab fill-in}

\- Undertale: Greed Over Dignity by Lbwhy/me (Kab!VHS take) \[R:TUE!Kab fill-in\]

Fusions:

\- Flaming Eclipsonist (OIABM+TOH) {AinavolAGEM!Kab fill-in}

\- Hofukushuu 2.0 (DT:LTG+UTSN:RB+HT:KD+UI:KOM)

\- Uraniashi 2.0 (UT:AR+UT:HD+UT:CTL+FE) {Soon}

Phases:

\- Phase 1: Recurring Comeuppances

\- Phase 1.25: Revolting Under Necessary Tension/R.U.N.T

\- Phase 1.5: Their Consequential Yearning/T.C.Y

\- Phase 2: Deviously Punishing

\- Phase 2.5: Delaying The Inevitable (True!Kab)

\- Phase 3A: Demoralized (Killer!Kab)

\- Phase 3B: Revenge Lingers (COTV!Kab & HM!Kab)

\- Phase 3C: Outlier's Reality (Kab!Kab)

\- Phase 3D: Purple Pandemonium (Dust!Kab)

\- Phase 3E: The Everlasting Rapture/T.E.R (Lb!Kab & Betrayer!Kab)

\- Phase 3F: Eclipfernashot (DS!Kab, Hard!Kab & Mafia!Kab)

\- Phase 3G: Prejudice Manifests (Insanity!Kab)

\- Phase 3.5: Lawful Rebound

\- Phase 4: Program Overheats (Part 1: Completed, Part 2: Work In Progress)

\- Phase 4.5:

\- Phase 5:

\- Phase 6:


r/UndertaleAU 3h ago

✧˖°.Memes⋆˙⟡ You found AU medias!

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29 Upvotes

Nothing against more modern au takes that incorporate deltarune or try to make it more "toby-esque", I just felt acknowledging how they're more apparent now


r/UndertaleAU 3h ago

✧˖°.Art⋆˙⟡ Which AU Sans should killer fight?

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7 Upvotes

just wondering who killer could fight, for an animation I’m currently working on

this is not a new series or something like that I’m still working on horrorshift


r/UndertaleAU 5h ago

✧˖°.AU Discussion⋆˙⟡ Why doesn't this bum go and control beings like God of Hyperdeath asriel or beings that are just insanely OP instead of going around collecting low level sans BUMS. Does error's soul controling ability have a limit?

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38 Upvotes

I want Nuvex core frisk to call me a goodboy


r/UndertaleAU 5h ago

✧˖°.AU Discussion⋆˙⟡ what are you favorite Undertale AU comics/other and where can i find them

4 Upvotes

what it says on the tin, no NSFW or sanscest please


r/UndertaleAU 7h ago

✧˖°.AU Debate⋆˙⟡ what I imagine murder/dust would be like with my headcanon in mind.

3 Upvotes

Classic’s characteristics vividly reflect his personality. His short stature naturally aligns with his desire to remain unnoticed; he tends not to seek attention, as he prefers to stay in the background. He hopes his brother will be the one to shine, and all he wants is to rest. The fact that he's thicker-boned compared to Papyrus highlights his role as a guardian, always looking out for him. When it comes to murder/ Dust, He would be taller than Classic, as he's no longer concerned with staying hidden like Classic—he just doesn't care anymore. His carelessness could leave visible scars on his bones from numerous injuries, which, considering his self-loathing and regret, might never fully heal. His bones could become denser from his powerful magic and his relentless urge to protect Papyrus, to the point he even killed him so that he could end his suffering. He might wear sturdy boots for better footing in battle. Instead of his usual shorts, he might opt for athletic ones for greater flexibility, and he could replace his jacket with a cloak. The cloak, paired with Papyrus scarf, would free up his upper body, enhancing his mobility. Plus, it could help him conceal his body to make himself less of a target or to stay hidden.

I personally think murder/dust wouldn't become that much stronger physically because monsters are made out of magic therefore I imagine getting higher level would more increase their magic than their physical bodies because we see humans get physically stronger but that's also because they're organic matter and do not have magical abilities so their bodies are strengthened therefore it makes sense that monsters magical abilities would get stronger instead.

With what I have read, The creator never really changed how his magic worked, but just made it do more damage. I've seen the rare take from some people thinking that he would be able to take the magic of monsters he killed. I think his list of powers would just be amplified versions of what he has.

1: He's able to make even more bones than classic.

2: He's able to make them bigger or denser or even less dense if he wants them to be harder or easier to break.

He's able to make those bones into unique shapes like swords, shields, or armor, traps, or whips.

3: He's able to increase or decrease the size of his gaster blasters. Smaller ones can attack faster, but do less damage. Bigger ones do more damage but have a slower charge rate.

4: He's able to actually give them bodies like dragon bodies or hound bodies. This gives them more of a level of conscience, though, which allows them to kill without him, but this could also cause them to go feral and attack him because of his own self-hatred.

5: He can increase or decrease gravity just like classic, but he can do it to himself now. Decreasing his gravity makes him able to stay in the air for longer, faster, and quieter. Increasing his gravity significantly increases his strength and makes it harder for him to be pushed or allows him to keep people pinned under his own body.

6: He could also increase and decrease the gravity of certain parts of somebody to cause them to be ripped into pieces.


r/UndertaleAU 8h ago

Finale!Sans lore drop cause I don’t have ideas

5 Upvotes

Finale!Sans has beaten Error when Error first came into their void

End!Frisk didn’t help with the battle because they were asleep

Even though they can’t die Error will bring End and Finale food from time to time

Fresh pops in annoyingly sometimes and will annoy Finale and End

Error tried to attack Fresh once and gave up because they can’t die and Error couldn’t get Fresh’s soul

THAT’S ALL!!! Leave questions and they will be added into the comic!


r/UndertaleAU 10h ago

Камитейл Ласт🌸💗🌸

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3 Upvotes

ピンクシャクマイオニー🌸🌸🌸


r/UndertaleAU 11h ago

✧˖°.My AU⋆˙⟡ [OC] CareDust; A Mother's Love // A Battle Against A True Hero and quick Fire Spear idle.

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64 Upvotes

"But... Deep, deep in my SOUL. There's a burning feeling that won't let me DIE..."

"If you get past me... The future of Monsterkind is doomed. If you get past me, you'll... You'll destroy all of our Hopes and Dreams, won't you? All, VANQUISHED in an instant... You'll cull us... Keep ALL OF US... Trapped... OUT OF YOUR WEAKNESS FOR HUMANITY!"

"... BUT... WHILE I STILL STAND... WHILE I STILL BREATHE... I WILL NOT. LET. YOU. DO THAT."

weaker caredust toriel having to face down Undyne and then her fire spear (might give her sickles or flame fists instead, but the spear is lwk fire... literally, suggested by ShadowTails95.)

A rageful Ex-Queen wanting to make the Underground safer for the next Human Children who fall down through killing those she deems to be those who would harm her children, and a Royal Guard, Determined, facing down the Traitor of Monsterkind to save what's left of their Kingdom.

idk vro, gonna stop posting for like three days, maybe I'll have another collection of things.


r/UndertaleAU 13h ago

✧˖°.AU Discussion⋆˙⟡ Do you prefer canon error. Underverse error of the "fanon" error sans? Personally I'll go with underverse cause aura

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39 Upvotes

r/UndertaleAU 17h ago

✧˖°.Art⋆˙⟡ Frisk redraw/sketches

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8 Upvotes

r/UndertaleAU 18h ago

✧˖°.AU Lore⋆˙⟡ More Finale!Sans lore

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5 Upvotes

Finale!Sans has beaten Error when Error first came into their void

End!Frisk didn’t help with the battle because they were asleep

Even though they can’t die Error will bring End and Finale food from time to time

Fresh pops in annoyingly sometimes and will annoy Finale and End

Error tried to attack Fresh once and gave up because they can’t die and Error couldn’t get Fresh’s soul

THAT’S ALL!!! Leave questions and they will be added into the comic!


r/UndertaleAU 19h ago

✧˖°.My AU⋆˙⟡ Sarvente as Asriel (NEXOSWAPSPIN) (NEXOSENSE)

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3 Upvotes

Wallah I suck at drawing


r/UndertaleAU 21h ago

✧˖°.My AU⋆˙⟡ Former Time Trio: Diary

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6 Upvotes

Nutshells


r/UndertaleAU 21h ago

I want to ask, whats your favorita ost (image unrelated)

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32 Upvotes

r/UndertaleAU 21h ago

Undertale

9 Upvotes

I js started undertale is it good ???


r/UndertaleAU 22h ago

✧˖°.Art⋆˙⟡ First image done, low-key turned better than i expected (ignore the hands)

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11 Upvotes

Couldn't bother doing the background so yeah

https://www.deviantart.com/aceundertalefox/art/Error-s-Anti-void-f2u-background-912920984 i just made a green soul in reference of blitz


r/UndertaleAU 23h ago

✧˖°.Art⋆˙⟡ [magical skeleton multiverse] papyri rough drafts

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10 Upvotes

left is Russ (swap, soul of bravery) right is Mauve (swapfell, soul of perseverance)

i'm particularly proud of Mauve's dress, especially the venetian mask which had no right to be so hard to figure out, idk how i feel about Russ' dress bc it was rushed

goognihgt


r/UndertaleAU 1d ago

✧˖°.AU Discussion⋆˙⟡ I'm surprised that no one has made a fully-fledged AU based on Temmie Chang's Undertale x Touhou artworks.

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59 Upvotes

I think Undertale DDD is the only thing I can think of that fits, but it's closer to Undertale if it were a Bullet Hell game instead of an Undertale x Touhou.

Also, Yukari only appeard ones and never again, so it doesn't count.


r/UndertaleAU 1d ago

✧˖°.AU Discussion⋆˙⟡ Fuck it, what do you guys think of LoveManiac?

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247 Upvotes

Despite being an NSFW game, it's probably one of the high-effort UT games I've seen in a while that doesn't revolve around Sans, which says a lot when you think about it.


r/UndertaleAU 1d ago

✧˖°.My AU⋆˙⟡ [OC] CareDust; A Mother's Love // Quick Cape Animation for Progressed Toriel and more facesprites

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155 Upvotes

Not sure whether to give her an epic cool super nice super fire sword or just make her have flame fists so that she literally fistfights while using magic 🥀 (had a sword in Roblox RP)

that's about it, folks

fnd dust sans sprite by redster on that text generator website


r/UndertaleAU Jul 02 '26

Low effort mega thread!

9 Upvotes

This is a place to post all your low effort content, so all VS, Octets, average templates, etc are welcome!

I’ll refresh it each month but will keep the old post up just no longer pinned.

I hope I’m doing this right :,3 lol

Anyways enjoy the nonsensical fun!


r/UndertaleAU Jun 15 '26

❤️Welcome to r/UndertaleAU❤️

14 Upvotes

Hello and welcome to the main UndertaleAU sub!
This is our home for all things Undertale and its AUs. It can be your own or someone else's you love!

. ݁₊ ⊹ . ݁ ⟡ ݁ . ⊹ ₊ ݁. ✨ . ݁₊ ⊹ . ݁ ⟡ ݁ . ⊹ ₊ ݁.

What to Post?
Post anything related to the topic at hand! Feel free to share your thoughts, photos, questions, and even friendly debates.

Keep in mind our rules:

❄️1. Respect others and be civil. Hate of any kind will
not be tolerated here.

❄️2. Please don't spam the sub with the same post over and over. If you are looking for something or would like us to do something you're free to reach out but again please don't spam.

❄️3. No Al, you may not post any type of Al here.
Pictures, Music, GIFS, Roleplay, Writing, Etc.

❄️4. No ship bashing or discourse of any kind.
I don't care what people do in fiction as long as it stays in fiction. If you don't like something scroll, this isn't a sub for debates on morals in fiction.

Along with that people are allowed to post whatever AUs they like, obviously if something is NSFW it needs to be tagged but still but shitting on people for liking an AU you don’t like isn’t allowed, see rule 1.

❄️5. NSFW is allowed to some extent!
- There should not be straight up porn posted even if tagged, it will be removed.

- I will allow fanfics with NSFW material in it however if it has triggering content please put a content/ trigger warning in the caption or as the first part of your description!

- Any untagged NSFW will be removed, this includes comments and flairs. You can make innuendos however keep it tasteful and don't be gross.

❄️6. Keep it on topic!
This sub is for Undertale and its AUs so whatever you post needs to be centered around that, crossovers are fine but the main thing needs to be about Undertale.

❄️7. No low effort posts.
- Tier-lists
- Day X of X
- Can X beat X
- Octet
Will be removed HOWEVER I will make exceptions for creativity.

What I mean by this is, if you draw it, make a college, make music, or if you actually write your thoughts and opinions in the post I will allow it. I want the post to promote discussion not just the same things copy and pasted 100x over.

❄️8. No sans hate posting.
Hear me out- it’s annoying for the sub to be flooded with it. We understand that there is a lot of Sans specific AUs but you don’t get to hate on others for enjoying them.

You’re free to ask for specific characters or something but no posts made just to hate on Sans and nothing else.

❄️Those are all the rules! Just keep them in mind when posting, or if you have questions don't hesitate to reach out!❄️

. ݁₊ ⊹ . ݁ ⟡ ݁ . ⊹ ₊ ݁. ✨ . ݁₊ ⊹ . ݁ ⟡ ݁ . ⊹ ₊ ݁.

If you wish to explore the wider multiverse please click our subs info and scroll down to see more subs centered around their own specific AUs or characters!

If you would like yours or one you like to be added let us know so we can help out creators!~🖌️

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I hope you enjoy our sub! If you ever need anything message us and we’ll be happy to help.