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BOOTING SYSTEM . . .

SYSTEM SUCCEFULLY BOOTED . . .

SYSTEM POWERING . . .

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Welcome Viewer . . .

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⚠️ DISCLAIMER! scroll to the end to read!

Systemverse is 16+

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🌐

Welcome to Systemverse . . .

Systemverse is an interconnected web of undertale alternate universes that is heavily script or code-based. In SV, every AU is connected by its Source Code, all deriving from the main AU, Undertale. Making Undertale the foundation and Capital of all Systemverse.

Systemverse is experienced through the eyes of Exodus, An Undertale Sans variant from a destroyed timeline, through many of his adventures (and misadventures) he meets many characters. Despite wanting to live peacefully and away from danger, somehow, someway, it finds him.

Sometimes, the POV will jump from character to character, but will mainly be Exodus

Systemverse’s story is told in many different ways. the way the lore or how the story is told may be through various media. Including but not limited to:

individual art

Animations

Text posts

Comics

Etc.

BUT mainly SV will follow a Visual Story/Webseries Format inspired by Homestuck.

🌐

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> Can I ask you or your characters questions?

Of course! I am open to any sort of questions weather be art related or character related, don't be shy! Ofc nothing inappropriate or weird. I would also accept character prompts, interactions, requests, etc.!

> Who are your OCs/AUs?

The Circuittale Players (most notably CodeX)

U_T_!Sans (Exodus)

Proxy!Sans

Rpgtale/Krypton @rpgtale-askblog

When tagging for credits, tag @zushi-sheep :]

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> important TAGS + LINKS

#systemverse: SV related posts

#sv story: the canon lore of SV

#sv snippets: side stories in the multiverse

1 - hey error?

#sv reference sheets: Reference sheets for SV Chatacters

#sv asks: viewer’s’ asks answered!

#circuittale: Circuittale related posts

#circuttale reference sheets: Reference Sheets for CT Characters

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DISCLAIMER

Systemverse is 16+

SV will (eventually) contain themes intended for 16+ viewers, such as violence, complex relationships (platonic or otherwise), language, etc. there will also be other matures themes that will be IMPLIED

⚠️ Each corresponding media will start with the appropriate TW/CW if ever it contains any

🩵 If you feel uncomfortable or triggered by any of the warnings that have been mentioned, feel free to either skip that post or unfollow/block. I do not wish to harm or trigger anyone, please look out for yourself and your mental health if you feel like it’s too much.

❌ I do not mean to romanticize or glorify any of the mentioned themes or content.

❓ If a post ever lacks a warning with a specific trigger, please inform me and I will add it to the respective post

Systemverse is not a perfect multiverse with perfect characters, all of them have flaws and reasons that define their actions weather or not it is morally good, bad, or grey

But in the bright side, there will be lots of wholesome moments too :]

Last updated: 5/14/26

THE TESTER: Dream

Where are you?

Finally free from his stone prison. To search for his brother was his mission

His presence elusive, faint in the air. A positivity weak is he still even there?

Where are you?

THE TESTER: Nightmare

An addition to Ink and Error being administrators, Nightmare, alongside dream were both assigned to moderate beside them, tasked in protecting peace between AUs and Out!Codes.

Alongside his brother, he looked after the original Source Tree to ward off anyone who tries to attack it. Eventually, he attacked and destroyed the original Source Tree, causing both him and dream to get severely drained from the battle. Dream becoming stone while Nightmare’s form started to melt.

After years of recovery, Nightmare has been starting to terrorize the multiverse. Ever since his brother was free from his stone state, they had been fighting and arguing back and forth

Cunning and manipulative. He knows how to use empathy to sway favors and sides. Despite having the power, he chooses to not wreak havoc and destruction, in fact, he’s against destruction, choosing rather to use destruction or physical harm to cause psychological pain. Although, blinded by negativity, sometimes this leads him to become narrow minded, or become impulsive.

Dream and Nightmare are bonded for eternity. No matter what they do, they still can feel a portion of their twin.

- AN: 1 more week and I can go back to finally working for SV more often now AHHH -

- AN 2: started with nightmare first because I had something planned with him and someone else, we’ll see if ill actually finish that thing lol -

THE CODER: Error

The face of destruction and order. (His own type of order at least)

Was appointed the Admin of Code by the CREATORS but initially refused the offer. Soon enough after a bit of a talk with Error, Ink convinced him to join, making him the Second Admin.

He works as the Coder of the multiverse, erasing anything that can threaten the fragile web of code, from glitches or other hackers. He also looks over if any AU or AT has been damaged or added. Its a more hands on job, so compared to Ink, his job is more indoors so he rarely leaves the Origin Code (he leaves less often now post nightmare incident)

The very first OUT!Code of the multiverse. He was the one who first discovered the Anti-Void since he was trapped in there for so long post events of Aftertale. After discovering the power to traverse the multiverse, he comes across the SystemSphere and has been watching it ever since.

Unironically, he found refuge and peace working as an Admin for SV. Which is why, until now, hes the most devoted admin, working the closest to the SystemSphere. He liked this position of work, it kept him grounded, it kept him sane in a place that would deprive him otherwise.

He used to go againts the order of the multiverse, bringing chaos and desturction whenever he pleases, but now he follows a strict moral code he placed on himself, watching and waiting until the line breaks, until someone slips and he can slip himself in.

As a hobby, Error knits and sews so he has made/given the clothes of multiple characters in SV. If it has its iconic Error stitching then its most definetly from Error. :)

THE ARTIST: Ink

The face of creation and imagination.

Ink was appointed as the Admin of Art by the CREATORS after they acknowledged the existence of someone who inspires many to freely create.

Ink serves as someone who protects the multiverse from danger, often seen with Dream whenever nightmare would threaten an AU or a Timeline.

Ink used to be more vocal about his ideas, sharing to the other admins about any concerns or plans he has to protect the multiverse. But ever since the dissolving of the 4 Admins, Ink had been more reserved with what goes in his head.

Nonetheless, he’s still out and about traveling the multiverse to know how it’s doing.

SURPRISE! 🎉

It’s also Ink’s birthday celebration and not just Error’s!

I hope everyone had a great time and not…try to kill each other!

Thank you proxy for hosting an event, and thank you everyone who brought their character to the party!!

- AN: this took way longer than expected due to how busy I got recently :( finals month is coming thus my posts will sadly slow down -

Ink: Comyet/myebi

Error: Crayonqueen/loverofpiggies

Dream/Nightmare: jokublog

Proxy, Exodus, Circuttale, Systemverse designs: @zushi-sheep

Chochi: @rpgtale-askblog

L!Sans/Passion: NSFWShamecave

Hail: @amiericegrainz

Ib: @gyoxot

Tik: @talesunderau

Killer: Rahafwabas

Thread: @neonpixelr

Without text under cut

open.

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fail. . .

- AN: quick ish thing cuz im testing out pc drawing again and oh my god. The style diff is killin me /lh. anatomy severly off since i was just familiarizing everything again lol -

X_night and fXLLEN

(side characters)

The final 2 members of the self proclaimed, CT!Exploiters. The Papyrus and Chara of Circuittale who does the same thing CodeX does, you would mostly see all 3 of them in combat, rarely would you only see one or two of them.

X_night is more laid back compared to other Papyruses. He serves as the front line of the group dealing heavy close up attacks and blocking anything that tries to hit

fXLLEN isn’t too much of a talker, instead she analyzes anyone she comes across, watching their every move and learning from sight. She serves as the team’s long range Attacker and Strategist, using code to control the playing field and cornering their opponent. She’s less aggressive than other Charas, choosing to play the long game against her opponents

Unlike X_night who goes back to CT after combat, fXLLEN can sometimes be found by herself, Hacking AUs/ATs, manipulating its code.

- AN: CT! Characters will eventually have their own solo story so CT’s story won’t be covered in SV. I hope to share all these stories with you! But I think it’ll take years for everything to come out :( I hope I do eventually cover all these stories I have been talking about since they are a LOT :,) -

> MESSAGE RECIVED . . .

CodeX

Deuteragonist of Circuttale. CodeX is one of the 3 Circuttale Exploiters that travel the multiverse trying to keep the code stable in each AUs, at least to their knowledge.

The CT!Exploiters aren’t a recognized group, but you will definitely see, especially CodeX the most wandering the multiverse.

CodeX doesn’t like to come across the 2 admins, Ink and Error, especially Error, due to him being very wary and suspicious of the two. He would only willingly work with Dream since he trusts him the most, and his comrades would agree too.

If he’s not doing work (either CT or in the multiverse) he hangs out most of the time with Exodus, since they’re both very close friends. In Fact, CodeX was the one who saved Exodus from being trapped in his Timeline’s Void.

Sugarplum

(Side character)

Mostly known as Plum by others(L!Sans/Passion!Sans). An Out!Code that now travels the Multiverse after his AU had been destroyed, and later on, a timeline that he was taking shelter in was compromised after years of safety.

He despises Error and wonders who his mysterious savior was.

He currently works as a singer, hoping from universe to universe to sing out all his pain and frustrations.

Fun fact! His favorite music to sing, especially when he’s furious, is metal!

- AN: heads up for Plum, his story is really heavy. So if I ever show him in SV, especially his lore, ill be placing specific triggers. I have placed a disclaimer in my pinned post so please read that if you havent^^ -

Killer

(Side character)

Killer is Nightmare’s only lackey.

Unfortunately (Fortunately?), SV doesn’t have a murder time trio

Just like canon, Killer does it for the thrill, to feel something whenever he feels like he’s spiraling with the turmoil in him. Unironically he feels calm whenever he’s doing work with nightmare.

- AN: one more main character (and 2 more side character) to go and I can finally start on the ref sheets and more comics lol! -

Glad to see you’ve connected to the vaster multiverse~

Is there any kind of pastry you enjoy? I would love to make you a welcoming gift!~

> MESSAGE RECEIVED . . .

- AN: I didnt know if you were asking a specific character so uhhh have the main guys answering this -

Status: closed!

Always wnted to do a group art of my and others utau/utmv ocs together, so why not do it for a bday post with the main man himself error!

Will be using Systemverse Version of Characters (at least the ones I had redesigned) for this just to inform anyone :]

So if you’re interested, comment/send an ask here with your character so that your utmv/utau OC will be included! It can be a sans, papyrus, or even an original character

You can add a short description too of their personality/relationship with error if you wish :]

Will be picking how ever much I can add to the art, so there’s not really a limit :p

Error

Work/Combat Outfit

When out of the Anti-Void or in combat, Error puts on a new outfit that would feel more comfortable and practical to use.

But due to Error taking a less aggresive role post nightmare incident, He has taken a backseat and monitors the Systemsphere up close, making him stay in the Anti-Void most of the time, thus taking on a more comfortable outfit when there

You know he’s locked in when you see him in his work fit

- AN: HAPPY BIRTHDAY TO ERROR!! Might make a very late birthday art for him :] -