#underlust reimagine!sans

[linkoleg]

there will be no turning back, but i don't think about it anymore … until it's too late

I'm going to repost this and another work because at first I didn't understand the algorithms very well and no one saw these works at first haha

[skeletonh0e]

A lot more people seemed interested in my interpretation of Underlust than I thought so fuck it, LORE POST

I'm putting this under read more because of length, but also while this is not a NSFW post there is talk of NSFW subjects and a slight tw for talk of non-con (it's not GRAPHIC or the main topic but it's talked about)

Also pls keep in mind none of this is meant to bash the og creator despite how problematic they are, this is simply my take on it

Without further adieu

UNDERLUST BUT I WRITE IT

I'll keep the basic premise, less in the sense that the underground was struggling with extreme fertility issues and more so that after falling into the underground it had entered a massive depression. Monsters were losing hope faster than ever, relationships weren't being formed and underpopulation quickly became a problem

Toriel and Asgore quickly realized that if something wasn't done they would be on the verge of extinction. So both to encourage monsters to have children AND to hopefully bring monsters out of this depressive funk they decided to push for a very sex positive culture

The two publicly opened their own marriage as example, they both started their own royal harems, they hired celebrities to put a focus on fun and sex appeal and even made so being a sex worker was a government job thus having a lot of benefits as well as a certain level of natural respect that professions such as military ranks or post workers get

The end result did actually help, monsters started having relationships and the environment became a lot less somber. It wasn't their intention to start an otherwise very hedonistic culture but that did come the end result. Do a lot of monsters do dress provocatively, there is a lot of brothels, clubs and there's a much heavier focus on drugs, drinking, etc, than there ever was in the vanilla undertale

So this is less "Undertale but everyone is OUTRAGEOUSLY HORNY all the time" and more Undertale if everyone was raised in an environment where it was just natural to be open about your sexuality. Think basically if you were trapped in Vegas 24/7

So some important things to note in general

Toriel and Asgore not only have kids, but a lot more than they did canonically. All of them are alive and as a result both of them are noticeably a lot older. Both silver foxes who can still get it tho, they're also still together technically but as said before open poly marriage with their own harems

Asriel is around and a full ground adult in this AU, his design is very similar to his hyper death god form and in this AU he's the one you meet in the ruins not Tori. He's not trapped there he's just a hermit (he flirts with the player but it's clear he's joking I headcanon Az as aroace lmao)

As those last two things imply Flowey is not around either

The amalgamations aren't around either, the monsters that created of them have simply fallen and passed. Alphys is still the royal scientist yes but we'll expand more on that later

No other humans have fallen into the underground therefore there are no human souls in Asgores possession and therefore there are no orders to kill any humans to gather said souls

The royal guard still exists, there is no "royal sluts" like in the original AU as funny as it would be. But it's noticeably more lax and even then like typical military bros they frequent strip shows, brothels, etc.

This also very importantly leads me to the next big thing that's very different about my interpretation of Underlust

Mettaton

This is not a post made to critique the og AU, but I will say I simply never cared for how he was handled in the original. In my interpretation Mettaton isn't hypersexualized either, though not afraid to use sex appeal here or there but his main role is basically the head honcho of the sex worker industry

The MTT Resort is a lot more expansive in this universe, covering nearly all of hot land, the capital, a decent chunk of water fall, and even has a smaller location in Snowdin. It is basically Vegas for lack of a better comparison, with a lot of strip shows, nsfw areas, bars, and even places where you can gamble

Mettaton is still a performer and not a sex worker himself, he still has family friendly segments but also late talk night shows for his older audience (it's not sexual not counting the ha ha funny raunchy jokes), he is strictly in his Mettaton EX form from the start not his boxy one and I can't draw for shit but if I could his aesthetic would he very pimp inspired dw it's just an aesthetic though he's a good boss

Further more when a lot of monsters being employed under him as show girls and/or sex workers this where I have to mention in this AU both Sans and Papyrus work for Mettaton. The former as an entertainer and escort, the latter as security (but Mettaton does give Pap a somewhat suggestive outfit so make of that what you will), various other characters are also employed under him but not all as prostitutes, Muffet for example has her own area dedicated to selling baked goods as well as managing the rooms of the guests.

Which leads us to the next talking point

Sans

I like to nickname Lust Sans as simply "Ace" for context, but what's different about him here aside from the obvious parts of being a sex worker, being very flirty and dressing different? Well first things first

This Sans is not aware of resets nor does he have ANY memory of them

Doesn't make sense for him too, no other humans, no determination experiments, flowey isn't around, etc, etc. The only time anyone gets the ability to reset is when the player falls into the underground and the most he'll be aware is having similar moments of deja vu that other characters get, but for the most part? Man isn't even aware that's a thing people can do

Adding onto that he's a lot less....depressed in this AU, ppl tend to forget that the knowledge of resets has upset Sans greatly. Man is DEPRESSED and it's at least part of the reason for his extreme laziness, literally takes the end of the world for him to get off his ass and do something (genocide route)

Ace as a result is a lot more proactive and noticeably less pessimistic, not to say he doesn't have any issues, the thing about this underground is the hedonistic culture is in a way to cope with the general depressing situation of the underground with Sans being no exception

I also like to think he doesn't have 1 HP as a result too, it's still low but not determentally low

For the most part he is still Sans, he's a lot more flirtatious and a low more show boaty that his Undertale counterpart but he's also still a silly little guy who loves to joke around and make puns. There's definitely a comedic twist to any of his performances, can you do a comedy routine during a live sex show or something akin to that? Idk but it's Sans he probably finds a way

And it's also worth noting that you don't encounter this Sans in Snowdin, you probably won't even officially meet him until you hit the MTT Resort. But you do see posters in Snowdin and hear talk about him at Grillby's (yes Grillby's is more of a nightclub here and Sans does frequent it just not as often)

Next question though

Frisk and Chara?

If you haven't figured it out, Chara never fell into the underground and was never adopted by the Dreemurrs, never died, etc. Chara is not in this AU in any form and adding onto that Frisk is not the character that we play as in this hypothetical Underlust Game

It does not make sense to include them and I cannot think of a way to include them that doesn't feel...weird somehow. Obviously it would be inappropriate to include them as children, but even if you aged them up you have to deal with characters possibly making advances on them and I uh- don't like that

So simply put they are just not here. So who do we play as in Underlust?

You play as whoever you want!

In my interpretation the protagonist is strictly 100% customizable so it can be your own OC or just a self insert, the only things that are for certain about the protagonist are:

They're human They're an adult The have the soul trait of "Lust"

Next question? What does it mean to have the "Lust" trait?

First off, your soul is pink in this AU!

Due to monsters not being as willing to attack humans (not all of them are super friendly mind you but you aren't entering battles left and right), having the Lust trait doesn't allow for a unique battle mode. Instead it allows you to enter "conversation battles" for lack of a better word

Think of it as being similar to the "Back talk challenges" in Life is Strange before the Storm, your ability comes to be able to charm, convince, befriend or even possibly manipulate others to progress through the underground. And yes hypothetically use seduction to get your way

How you use this ability is up to you, you can be as sweet as a peach only using the most moral method to progress or you can be a two faced bitch playing mind games. And just to clarify the option to sleep with characters is not treated as being either bad or good (unless you use it as a form of manipulation), you can go through the entire underground not being even a little sexually active or you can progress through it sleeping with nearly everyone you get a chance with

Neither option will reflect on your characters morality, the only thing that does is how you choose to treat others

Now....

Genocide Route? Pacifist Route? What's the end goal here?

This is where I confess that this is the one aspect I haven't 100% figured out so I'm down to hear some thoughts as I think ideally there would be multiple endings so far all I have is

-> Lustbound Ending (You choose to just stay in the underground) -> Bloodlust Ending (The genocide route) -> Lust Freed Ending (Neutral Route, you killed a boss monster then escaped the underground)

A genocide and neutral routes are possible in this AU, but its different as you 100% have to be the aggressor in this situation, I would like for there to be something akin to a trust pacifist ending where the underground is freed but I haven't 100% figured out how that would happen given that there aren't any human souls or Flowey in this AU

Other Stuff that I want to bring up but didn't fit into the other categories

Asriel does give you a phone and you can call him through out the underground, unlike Toriel he definitely answers though he takes on a similar role to Papyrus in this AU since you don't befriend the skelebros until later in the story

As mentioned before the amalgamations never happened, Alphys didn't experiment with determination in this AU. When Asgore and Toriel were pushing for a more sex positive culture, they requested her help (thus why Mettaton has his glam body from the start) but also to help the under population problem Alphys worked on drugs that basically functioned as aphrodisiacs / viagara to help monsters further populate

This....helped but backfired a bit as monsters started to use these substances for less than savory purposes (you can figure out the rest), but it made her guilty enough to disband ever working on them again, but the damage was still done and it is a part of the reason why there's a noticeable drug culture in the underground now that just wasn't there before

While I lean hardcore into the underground is just Vegas with the focus on booze, sex, etc, there are areas that are just normal. Mainly the Ruins, most of Snowdin, and of course Asgore's castle

Another thing I want to clarify is that the hedonistic life style isn't entirely bad, it did help the underground and pulled monsterkind as a whole out of a great depression. It is simply a different way of coping with a bad situation that a lot of monsters have taken to. That being said, it's not entirely good either as mentioned above there are problems and risks with life styles like this

Is it the right way to handle it? The wrong way to handle it? Does it matter because some monsters are finally happy now? Who's to say, a fun debate to be had for sure but the entire point is that there's a lot of room for debate to be had about it

But also like I said I haven't 100% figured out everything about my Underlust interpetation so I'm down to hear some thoughts and you are always welcomed to ask some questions

[zirkkun]

repostober day 4! fear or betrayal 💔

✨💚 kofi! || comms open! || reblogs appreciated! 💚✨

[ut-museum-guide]

AU Origin Stories

Focus: Comics

Includes:

Sanses: Cross, Dream, Lust, Horror, Ink, Asy, Mob, Insans

Undyne: [Horror version], Soul

Alphys: [Horror version], Alive

Bittybones: Brassberry, Edgy

Note: the only smut link is on n*sfwshamecave, neither the comic Underlust nor Papyton contain any smut.

.

_no particular order

1. Xtale from Underverse

By Jael Peñaloza

Cross Sans, X-Gaster

.

2. Dreamtale

By jokublog

Dream, Nightmare

Forgot that it was originally a story book style. If you want Dream Sans spiced up, Fallen Guardian by Zu-is-here has Dream fall from grace after Nightmare recovered. Molten Dream from Orbital Inclination has melty dream rather than goopy Dream, not as strong but Passive!Nightmare has a cool role. Nozapuns does some great work with Nightmare. My favorite is a silly Passive!Nightmare comic.

.

3. ___tale

By Comyet

Ink

Ever wish the story continued from there? i’m_sorry_buddy has a cool twist to it called The Forgotten Ones

.

4. Aftertale

By loverofpiggies

Geno

List of 6 parts

.

5. Underlust

By n*sfwshamecave

Lust Toriel, Lust Frisk, Lust Flowey

There’s also a Papyton Comic.

.

6. Underlust Reimagined

By zirkun

Master Post

.

7. Horrortale

By horrortalecomic (previously sour apple studios)

Horror Sans origin [Chapter 2]

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8. Asylumtale

By Banalras

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9. Mobtale

Original by ___

NyuBlackNeko version

Baby link chain

.

10. ALIVE

by Tatatale

Alive (Alphys) and her group of misfit friends break shit and save the multiverse.

Origin Story

Alive

Soul

Insans

MV Mettaton

.

11. Brassberry Family Rescue

By boe-someone

It’d hardly be respectful to fandom to not include at least 1 bittybones story. Poetax (aka theskeletongames) does them too, usually with a focus on Edgy and Red called Itty Bitty Problems and Bara Basic Bitty.

.

From @undertale-museum

[aus-from-undertale]

Sans centric aus

("but heart mod, isn't that all of them?")

(well yeah- but um ... Yeah... I guess...)

Original Sans

Ut-mob- gangster sans takes care of a strange human

Reapertale- reaper sans messed up the job

Sans the seraphim-sans takes Frisk soul and opens the barrier

Darker yet darker sans is a gaster experiment

Handplate- still being experimented

Stand in- Frans au, where sans can't get over a soulless pacifist run

Littletale- sans is smol

Timetale- Salphys au about sans life

Weabootale-Shitpost sans

Insomnia- Sans sleep is having a bad time

Cybertale- monsters surviving with technology wants to go back home

How to greet a new pal- Undertale sans ends up on Underfell universe

Underlust reimagined - sans got it hard (pun)

Ut gangster au- Mob sans!

Something's missing- is it fair to put this here?

Hollowtale- hollow knight lives with the bone bros

Unexpected guests- bones bros gain pet gaster blasters!

Bark at the moon - the bone bros BECOME gaster blasters

Underorquestra- sans is a maestro

Leaf gaster bros-daily life of the gaster bros

Flowey possession - Flowey helps sans protect papyrus =)

Anothertale- sans tries to stop genocide from the beginning but it gets worse

Doormaker- sans from Undertale and deltarune are the same!

Merges

Echotale- gaster and sans merge after an experiment gone wrong

Mergetale-Frisk and sans merge after an accident

Bromalgamate-sans and papyrus merge accidentally after a lot determination

Gaster blaster- Sans merged with his blaster!

Damaged!tale- after a genocide route gone wrong, papyrus, sans and Frisk become one!

Fatal!error- literal merge between Error!sans and Aftertale sans

Paper crane- merge of many sans

Sixbones- amalgamation between sans and papyrus

Underfell

Soulfell- edgy sans loves hot topic

The skeleton games- post pacifist sans lives nearby a vampire

Feline good- sans became a cat and wants to turn back!

Heavenfell- Frisk goes to die and ends up on the underground

Songfell- Frans au where Frisk is a priest dealing with a large monster

Underswap

Buttontale- Sans is coraline

Underforgotten- genocide route where just sans is alive :(

Bad x Good sanses

Warverse- every au collides with each other and a war begins!

Let dust be a reader!- the bad sanses wants to chill

Dreamtale- Story about the life of the twins Dream and Nightmare

Blue and the bad sanses- blue is being really underappreciated!

OC

Killer!sans- after many resets, sans accepts a proposition

Ink!Sans- born as a sketch, this sans has no emotions

Eclipstale- other take on dreamtale

Dreamtale 0- more sinister beginning to the dreamtale story

Errortale- someone who likes to watch novelas and cause chaos!

Aftertale- after many resets, sans finds someone on the menu

Undertone- blind and timid sans deals with a genocide

Alterverse- Sans with the toriel role!

Underfresh- a parasite with good vibes!

Asylumtale-Sans is not well

Paperjam- mix between ink and error!

Parasitetale- Sans will do anything to live

Terrortale- sans that is a mix between Underfell and underlust!

Tidetale- a robot created for sans!

Naturetale- sans is vegan

Goth- ship child

Chance!tale- magician sans with a complicated past

Ferntale- sans with plant powers

Undersource- sans won't take more suffering any longer

Soulbound- sans injects himself with determination and it doesn't go well

Impostortale- a copycat ends up on the underground

Underwar,- it's not a war between monsters and humans, but monsters and demons!

Undergut- the underground is HUNGRY

Sintale- sans is sloth

Anxietytale- sans is anxious

Basic!sans- sans had his code messed up :(

Sunny- sans who has a bit of every character within

Irrsintale- bone bros were formed by crystals!

Fileverse- sans is born from a drawing!

[proship-confessional]

've seen posts talkin' 'bout 't before, but i hates the "reimagined" UnderLust au's. 'll ferver loves everythin' i knows 'bout th' base in itself. i hates when they remove the sexuality outta it, everythin' relatin' ta hypersexuality-. 't jus' don't work, an' nows all ya've gone an' done 's make a pink sans. ya remove everythin' comfortin' 'bout 't, an' now ya jus' have a pink skele who dresses mildly sensually

(˶˃ ᵕ ˂˶) .ᐟ.ᐟ

(literally! the whole point of underlust IS the lust part. and then it got fucking puritanized by parts of the fandom that decided it needed to be sfw just because they didnt like it. if you dont like something vut its not hurting anyone? LEAVE IT ALONE. dont mess it up for the people that do like it. sorry im very passionate about things like this)

[zirkkun-wiki]

🖤《 underlust rainbow 》❤️

《 AGE RATING: M for Mature / 16+ for suggestive themes, abuse, and violence. 》

an underlust AU that takes a spin on the original concept to present a thematically similar story, but with some slightly different aspects that have led some of the characters to take different roles.

《 ORIGINALLY NAMED: Underlust Reimagine 》

as such, anything on @zirkkun with the tag #underlust reimagine is the same AU. the tags were not completely changed over but I will try to keep things as accessible as possible :)

🖤 -- credits -- ❤️

Undertale (c) Toby Fox Underlust by @/nsfwshamecave

《 quick links 》

❤️ main tag (new tag) || (old tag) 🖤 faq  ❤️ other questions (new tag) || (old tag) 🖤 fanart (new tag) || (old tag) ❤️ chapter list  🖤 read comic on ao3

《 characters 》

《 main cast 》 🖤 Arrow (Chara) ❤️ Myriad (Asgore) 💙 Ash (Toriel) 💙 Sage (Gaster) 💜 Ally (Alphys) 💙 Ace (Sans) 🧡 Duo (Papyrus) 💛 Hugo (Grillby) 💚 Pearly (Undyne) 💛 Metacrit 💜 Aqua (Muffet) 🤍 Tomo (Frisk) 《 side cast 》 🐇 Rabbit Family 💙 Napstaton 🤖 Robot Family

《 taglist 》

#underlust rainbow #ulr #underlust rainbow comic  #underlust rainbow ask (tag for asks to the characters) #underlust rainbow question (tag for asks to me) #underlust rainbow fanart #underlust rainbow ref #underlust rainbow chara #underlust rainbow asgore #underlust rainbow toriel #underlust rainbow gaster #underlust rainbow alphys #underlust rainbow sans #underlust rainbow papyrus #underlust rainbow grillby #underlust rainbow undyne #underlust rainbow napstaton #underlust rainbow metacrit #underlust rainbow muffet #underlust rainbow frisk please note: old posts (pre-January 31, 2025) will likely be tagged #underlust reimagine. if you are looking for an older post, be sure to search the right tag!

[zirkkun-uthcs]

How about Reimagine!UL Sans, Error, Geno, Dust, and UF Sans with a friend or partner S/O (Your choice for each) that isn't very talkative or touchy, but are kind to them, allow them to vent, and would fiercely protect them if they needed it?

Underlust Reimagine!Sans - I mean, this is probably his ideal friend, more or less. Ace isn’t much for people to begin with, so someone that’s not very talkative but willing to be someone he can bark at and vent his problems would probably be pretty nice. He isn't exactly the type to want to look for solutions, either... he doesn't think it's worth his time. And, of course, someone who's going to avoid physical contact like the plague (which he would definitely consider himself to be a plague) is an added plus. Only problem with this pair is he's going to hate being protected. Ace does not think highly of himself and truly considers himself a burden on society, so protecting him under any circumstances is going to immediately put him in a more foul mood than taking whatever hurtful things are being thrown at him.

Error - Error might just ignore you to start off. Oh, but don't misunderstand -- he likes your presence, but he doesn't really care to talk much. Give him a little while, and his self-imposed isolation will get to him, and Error will start talking so much that you might start preferring when he was silent all the time. He might just start complaining about things that annoy him, rambling in annoyance while you just listen, without expecting or really wanting any input whatsoever. Bit by bit, he might start introducing you to things he enjoys, and he's starting to realize that, maybe, he does like having someone to talk to and share his interests with. There's a flicker of something, maybe, he doesn't know. But he likes having you around. It's when you go out of your way to defend him that he finally realizes it -- Error's fallen. And he's fallen hard.

Aftertale!Sans - Genuinely, Geno might be a bit off-put by how shy and touch averse you are. He's not very talkative or touchy himself... in MOST cases -- because when he gets close to someone, he really wants to be able to hear from them and be physically close to them as well. It's like a form of reassurance, that they're actually there because they like him and not out of pity. If they don't say anything... well, Geno might not exactly say much of anything, either, because he doesn't really want to open up to someone he thinks is going to be bothered by what he's saying. You'd have to be really clear that you want to hear from him to get him to speak. Of course, too, defending him when he's been knocked down or someone's trying to hurt him definitely helps with his trust in you. Putting yourself in harm's way for his sake? There's no other more genuine form of care he can think of.

Dusttale!Sans - Dust is sort of... curious? He doesn't get you. You two can't hold a conversation for anything, and yet you're willing to protect him? Why? It's strange. Most people aren't like this. He isn't exactly what to consider of the two of yours' relationship -- are you friends? no? something else? Maybe you're just people who know each other but have some sort of silent trust. Despite all lack of conversation between you two whatsoever, for every time you protect Dust, he will protect you in return. It's the least he can do for someone willing to do that for him. Yeah, maybe... after a while, he does consider the two of you to be friends, and he may try to start a conversation outside of more than just "hello"s. This friendship would be the slowest burn of them all, since Dust would take a long time to warm up to someone who's only willing to talk about as little as he does.

Underfell!Sans - He doesn't trust you. Fell isn't one to trust people to begin with, anyway, but the fact that you're quiet really doesn't leave a good taste in your mouth. What are you planning? What's going on in your head? What's wrong with you? He keeps looking for reasons behind your actions... even though there are none. Good luck getting close to him at all -- the only way it'll probably happen is if someone forces you two to hang out by yourselves for a while. Even if you decide to step up for him and defend him, as a friend (which is already more than he considers you), he's not really going to understand why -- in fact, that might make him trust you less. At the very least, he'll tolerate you, especially if you're a friend of a friend (or his bro), but don't expect a whole lot more than that from him.

[tatatale]

Ace sans wif 4 or 20 if tats alright :D

Btw rly love ur art

I didn’t forget about the palette challenge! I’ll draw more when I have time.

Ace belongs to @zirkkun

[alch3mic]

...i also realized i never posted this.

[6nimus9]

HAPPY BIRTHDAY ALCH 💖 💖 💖 💖

I felt like drawing them cus they’re adorable- So here you have these adorable dorks ✨

Chesire belongs to @alch3mic Ace belongs to @zirkkun

[linkoleg]

How are you? I see. You'll get used to it. =)

[miyosoart]

Gift for @zirkkun

I got this idea out of nowhere and it’s perfect timing since I’m doing fanarts spam ;w; The title of this art is Flower of Lust referring to the flowers they're holding. Red is associated with passion and love so that's Duo's part while Ace is blue aka the opposite. Duo's flower is blooming while Ace's is wilting. Representing their lust I suppose xD.

Underlust Reimagine by @zirkkun

[azeriaa]

Merry Christmassss!!! ✨✨✨ Have more stream doodles because I’m desperate to post something today but I have nothing. I have no quality contents at all why are you still here. 😂😂 I appreciate it tho.

P.S. Rain is not a Sans.

Warverse / @toxictoxicities LAU and Cosmic / @nixensibrat02 Hourglass of ShameFaith’s shipchild / @codeys-space and @6nimus9 maybe @tatatale and @paxtheskelewolf and @stoukadraws and a few more- Sliver / @rsushiiihome Mimir / @paxtheskelewolf Rain / @6nimus9 Magusverse / @xfr3eax Logtale / @strikeyoko Chance / @zahrart17 Parasitetale / @bloowe-blu Insans / @tatatale Ace / @zirkkun Lee / @halban-josu

[authordgaster]

Just Saw the au idea you sent to AVJ it's really interesting and I'd love to learn more about it

I’d appreciate more specific questions, but sure.

Hope is inspired by the concept of toxic positivity.

After Hope escaped the Antivoid, he decided the best way to bring positivity to the multiverse was to destroy all the negative AUs.

Core Frisk wasn’t particularly on board with this idea since some of those AUs had innocent people in them, however they also didn’t want to turn Hope into an enemy, given that the two had been friends for quite a while.

That friendship was destroyed however, when Hope realized how effective his aura of positivity was in not only making those around him feel positivity, but how desperate the inhabitants of the Omega Timeline could be to keep feeling that positivity.

It reached a point where he was able to sway over a dozen people to his cause before Core Frisk stepped in and told him to get out. Hope reluctantly agreed, taking his new followers with him to the ruins of DreamTale to create a new base of operations, with the intention of spreading his new form of positivity across the multiverse and destroy every negative AU in existence.

[coolbattlegirl]

Hunger gays games birthday doodles 

Ace belongs to @zirkkun

Cheshire belongs to @alch3mic

Orion belongs to @impostertale