#symbiote!gaster

[freshiegayboi]

new chapter of "so many snacks, so little time", my Symbiote!Gaster/Reader fic!! enjoy :D

[sam-skelet]

I mean, you're not wrong.

Favorite character: *exists*

Me:

[crechetale]

WELCOME TO THE CRECHETALE AU BLOG!

ABOUT THE AU

CrecheTale is an UnderTale AU created by EPILEPZIA.

The AU is humor-mistery themed.

In this au, the underground has been flooded by a virus called Pisces or the Twin Virus, that has affected half the monsters, making them less active, nonchalant and clumsy in general in exchange of increased power and magic overflow.

The affected monsters "twin" is capable of using its overflowing magic for any means in exchange for permanent nurturing of the other, creating an obligatory symbiotic relationship.

This AU takes place in a fangame so Frisk is the Player and not a separate entity.

MAIN CAST

-Creche!Frisk -Creche!Toriel -Creche!MonsterKid

-Creche!Chara -Creche!Asgore -Creche!Mettaton

-Creche!Asriel -Creche!Undyne -Creche!Gaster

-Creche!Sans -Creche!Alphys

-Creche!Papyrus

OFFICIAL COMIC

-COMIC PT.1

-COMIC PT.2

-COMIC PT.3

-COMIC PT.4

-COMIC PT.5

[deltaruminations]

sorry this probably won't make a lot of sense without the context of many, many thoughts I've been having recently about FRIEND and "predatory narratives" but anyway i wonder how much deltarune was knowingly inspired by/is a critique of FNAF Specifically in how it knowingly manufactures unsolvable "mysteries" and constantly moves goalposts in order to exploit fans' emotional investment in the story and maintain an indefinite supply of attention and money. what i'm saying is FRIEND is scott cawthon and gaster is matpat, in the sense that he's in an unwinnable arms race with it and losing his fucking mind in the process and is also a memetic vector of that madness to thousands of unwell teenagers behind a screen, not in the sense that he's getting any symbiotic ad revenue out of it. also ICE-E's dark world real

[mimicrygrievous]

Here’s a concept I think about semi-frequently but have yet to actually see: a mini nightmare being made in a lab with a very hard won sample of his DNA. A mini-boss, as hypothetical Killer may call them.

In my mind I kinda see it as an oc-y self insert thing, tiny little gooey octo baby reader who is very horribly experimented on and has nightmare’s skillset. Like, just a tiny ball of fucking RAGE. Like a fucking baby vemon symbiote type shit who is wrecking the fucking walls trying to escape from the pain but isn’t quite big enough to do anything effective just yet. They are just straight gooping wrecking-ball style. Anyway.

As they grow, the scientists (roll a die to pick which au sans/gaster/alphys/whoever the flying fuck its gonna be I don't give a shit) experimenting with them are getting hurt more and more often before being able to properly subdue the specimen. The specimen is growing into Nightmare’s stolen power by the day, feeding off of what fear they can wring from otherwise indifferent scientists. They consider killing it and starting the project anew. For some reason or other, they don’t, or maybe they never get the chance to.

The specimen escapes (or is broken out; dealer’s choice) killing everybody they possibly can in the lab. Destroying all they possibly can of the research. But this isn’t the underground; this is lab with pretty advanced knowledge of the multiverse at large. There are escapees who plan to bring back reinforcements. The specimen either escapes themselves before they return, or they fuck up the place so good that they CAN’T return.

But hey, if they do get stuck there for a while, at least now they can get nice and acquainted and intimate with their powers until they are no longer trapped by the restraints of mortal-devised portalling methods.

Also lots of Dadmare potential, but yeah good luck perceiving that little freak of nature.

[britannia0]

Can I just say I love how sketchy your artstyle is? Especially when you draw LB bc it really feels in character for lack of better wording ifykwim

Anyways question timeee, you mightve mentioned this before or gotten an ask about it but what drew you to lb? Like what makes him a character you enjoy?

as selfin rightfully said, anonymous ask? I'm movin' up in the world

as for the question, dearest asker:

I think it was the original merg playthroughs that drew me to him, (and made me find out about his existence) and I started to grow more and more attached over time. I don't know when it happened, but he's just irreplaceable to me now.

I'd say I usually grow a liking to characters like that. Find out about them, compare them to others, realise I like them the most, get pissed because there's little-to-no content of them (they're usually the most unknown damn characters, example being rico from aot. (yes she's my favourite aot character.))

As for what makes lb a character I enjoy? I'd say it's a mix of the more grounded approach of the au, and gaster. I'm quite a big fan of gaster, he's my #2 UT character, competing with sans for #1. plus the design of lb is the best I've ever seen, rivaling fatal and loverofpiggies designs in general. it's so damn basic yet so good. I've always liked more "wild" interpretations of things, as in like- when a character just goes sicko mode. not being restrained by plot or other characters, just goes crazy. though I may just be latching onto something here since I dont quite know myself.

one thing I DO know is how much I love the static aspect. I've been waiting to talk about this all ask. the static aspect of lb hooks me in EASILY. I don't know why but it's so damn good to look at.

not to mention the twitching. lb really gives off this vibe of "we're fucked" no matter who he's up against. phase 3's opening remains my favourite UT-related sequence ever. maybe even outside of UT, actually.

lb excels even more than dust in just pure POTENTIAL for design. you can have a more symbiotic approach, a more retained and orderly approach, or you can have a puppeteer-type dynamic. there's also it just being batshit insane, which I enjoy with a mix of symbiotic and puppeteer.

off-topic slightly, but my favourite representation of lb is a crackhead disposition, with puppeteer strings. yet it's symbiotic in nature, sans and gaster both agreeing on this.

PS: thx for the comment on my artstyle. I love sketchy artstyles a SHIT ton yet it feels like I js chicken scratch with mine. so the very fact it helps my art, especially with my fav character ever, is definitely a motivator.

anyway, thanks for the ask. you just motivated me to start working on another lb drawing I've been thinking of.

[the-judge-of-bones]

(Just the monthly reminder that needle is a dick, We do not trust UF!Gaster, we do not stan UF!Gaster, in fact we go in the complete opposite direction of him, Just him and his giant void worm that he has a symbiotic relationship with)

[vex-bittys]

How would a lamia react if their owner was pretending to be happy just so they wouldn't worry anyone or their lamia's.

*It’s alright to tell your lamia how you’re feeling. Bittybones and their owners/adopters have a symbiotic relationship. The adopter cares for the bitty with food and shelter and the bitty provides companionship. All of the lamia bittybones at this shop would be compassionate towards an adopter who was feeling unhappy or depressed. They would rather worry about you than have you carry that burden alone.

Papython (UT!Papyrus): will definitely notice, gives lots of cuddles

Corny (UT!Sans): takes a bit longer to figure it out, you can only fool him once, will cheer you up with jokes

Krait (Gaster): once he finds out (and he will), he will give verbal encouragement and reassurance

FireRing (Grillby): catches on to non-verbal cues quickly, will make some relaxing tea and snuggle up to you with a soothing warmth

Honey Bo (US!Papyrus): perceptive so he notices quickly, immediately tells you that you can tell him anything because he’s a good listener and he cares about your emotional well-being

Pygmy (US!Sans): doesn’t catch on to deception easily, so he believes that you are truly happy

King (UF!Papyrus): takes some time to understand the situation, you don’t need to be concerned about worrying him, he’d rather know if you’re upset so he can help

Coral (UF!Sans): probably realizes what’s going on but struggles to address the issue, may leave you some shiny gifts so that you know he cares

Chain (SF!Papyrus): is not fooled in the slightest, understands that you want to keep from worrying him but lets you know that he cares about you and how you truly feel more than he cares about you worrying him

Mamba (SF!Sans): not good with social nuances, not good at dealing with emotional issues, will be a bit offended that you don’t trust him with your true feelings, he’s strong and confident, nothing will worry him!

*It’s not that Mamba, Coral, or Pygmy don’t care or notice an adopter’s emotional state. Mamba and Coral have difficulty with expressing emotions and may have difficulty seeing through disguised emotions. Pygmy has a mindset where deception doesn’t occur to him, so he wouldn’t consider that a person might hide their true feelings.

[metakazkz]

(New) Abysstale  sans Ref update 2025

The (new) Abyss Chains is back with redesign

Upgrade Abyss Gaster Blasters

The new Bone Attack and Crystal Attack return with their new design,

stronger and dangerous.

Why it said His second Life, spoiler alert

In his first life, Abyss and Abyss!Papyrus were born twin brothers, but there was a terrible accident when they were five. It resulted in Abyss!Sans' death ( his first death ). But on his birthday he was reborn ( his second life ). Unfortunately he had to completely restart his life, but lately he's been getting senses of deja vu and some memories from his previous life. To make it clear, If Abyss didn’t die during the accident. He would be 21 years old by now.

Abysstale sans

name: sans

Nickname: Abyss or CELL

Gender: Male

Age 15 years old ( second life)

species: Skeleton Monster?

family: Papyrus (Brother) and Gaster (Father)

Personality Abyss Sans is calm, determined, creative, clever, patient, intelligent, and resolute. Abyss is also shown to be thoughtful, as he would put others ahead than his own well-being. Weakness Abyss sans is weak to hospitals and laboratories and their equipment. It takes a lot of courage for him to walk in either of those buildings. Usually with the help of Abyss!Alphys or his friend to accompany him to face his fears.

Abyss favorite drink is ice cappuccino.

Abyss is a jeweler

Abyss!sans size is  smaller than classic sans .

Abyss!sans Gaster Blaster. His head is closer to feline animal specially Tiger or saber tooth Tiger. Abyss’s blasters limit is 8.

Abyss!sans (regular form )

HP: 18

ATK: 18

DEF:  18

Main weapon: CELL change shape ‘’ scarves ‘’

Regular magic and weapon:  Bones attacks, Gaster Blaster summon limited to eight.

(update)Abyss Chains are back but limited to only 8 summons.

Abyss doesn’t have Blue Magic.

Teleport: 

Teleportation: He can now travel to AUs World

Immune system:  

any type of Poison (  toxin, venom and ect)

any type  of Virus ( bacteria, infection and ill and ect )

well never effect Abyss!sans. Abyss never got sick for his entire life. Except paralyze and sleep can knock him down.

Abyss!Sans have no CODES, it’s because CELL are a symbiotic living organism that doesn’t need CODES to survive.  Those who can modify CODEs or Hack will be impossible to control or change him. 

Regenerated : Depending of injuring he can health. A small injury can take a second, a medium injury can take a minutes. However, if it is a huge injury, ( For example losing a limbs and a major fracture. ) Can take a week to regenerated. 

Ignite: Abyss can burn people like they have a spontaneous combustion. It only happens when Abyss is in grave danger or his only self defense left for his survival or his huge hatred toward someone who hurting him in past.

Healing Cell and Energy Cell:  Abyss can created a energy ball known as Energy Cell  made of CELL. It can help people recover health, cure and temperately boost people's strength.

However,  Abyss will lost half of his strength and HP. ( depend how many DNA tendril he have so far. ) He will be vulnerable for while.

The healing ability is simply healing people with Healing Cell

Abyss!sans (Cell!sans )

HP: 188

ATK: 188

Physical DEF:  188

Main weapon: the same but more dangerous and threatening.

Nucleus Cell Barrier : Unbreakable. touch the barrier and you get electrocuted to the point of severe damage or death.

Proton Cell Sphere : Created a volt sphere and explode electric field on contact on the floor or the targets.

Okay this is the complete information of Abyss!sans (Cell!sans ) ... for now.

His Cell forms 

Abyss sans (me) Meta-kaz Sans (Undertale) (TobyFox) Artwork by me Meta-Kaz Don't steal and or copy my arts and my character 

Abyss sans (me) Metakazkz

Sans (Undertale) (TobyFox)

Artwork by me  Metakazkz  Meta-Kaz DA

[corrupt-anon]

It is a living thing it chooses its host then sticks to it that's why the blueprints are so confusing

Gaster: So it's like a symbiotic relationship... Interesting...

[freshiegayboi]

fic update: so many snacks, so little time chap. 2

wrote some more symbiote!gaster/reader!! enjoy lol

tags: canon typical violence, reader is female but also kinda gnc, police brutality (its not police but its close enough)

read chapter 2 on Ao3

or read it below!

When you woke up again, your head pounded from the light coming through the windows. You hissed as you carefully got up to head to your bedroom, your black-out curtains your only hope. Every step was torture, your eyes squeezed shut even as you stumbled around your couch and down the hall, the slowly progressive darkness making it just the bit more bearable.

You had no idea what was causing this, maybe you were getting sick? Either way you hadn’t felt this rough in years and wow, you might lose the nice little breakfast you’d made that morning.

...Had it been that morning? You weren’t actually sure if it was even still the same day, given how hard you’d passed out.

Maybe it was, maybe it wasn’t, but you were going the fuck back to bed, and nothing was going to stop you.

‘You need to eat.’

The deep, dark voice came from somewhere in the back of your head, startling you badly enough that you fell to the floor just in the doorway of your bedroom.

Immediately writing it off as delirium from whatever sickness you’d caught, you crawled the rest of the way to your bed, ignoring the weight in your limbs that hadn’t been there before. It took more strength than it had any right to, to make your way into your bed. Grunting with the effort, you carefully tucked your pillow to your chest, scrunched your eyes shut, and tried to go back to sleep.

Of course, that ended up being a lot easier than you’d thought it’d be, which was a blessing in itself because when you woke up the headache from hell was gone. Your energy had returned, swinging your legs over the side of the bed being a lot easier than it would have been the night before. The day before? Hours before? You still weren’t really sure what day it was, whether it was still “today” or not.

There was an easy way to check, but when you reached for your phone, you realized that there was no way it would be on the nightstand where you usually kept it. You’d barely gotten yourself into bed; you’d have been shocked if you’d remembered to bring your phone.

Standing to your feet, you yawn loudly, shaking off the grogginess that still clung to the back of your head. Now that you were up, you couldn’t help but grimace at the smell that was coming off you. Surely it’d been at least a night or so if the b.o. was this bad. Deciding it’d be best to find your phone and then take a shower to get rid of the stench, you started for the bedroom door.

But something in you pulled, back from the door as you raised your hand to open it. It felt weird, like you weren’t in complete control of your own body, but given how sick you were (and likely still were, you had no doubts that bad of an illness wasn’t going away after a good night’s sleep) you wrote it off and went through the doorway.

Your stuff was right where you’d left it, your phone cracked and unusable. Which was more than a little annoying, but you’d just need to boot up your desktop to message the necessary people that you were still alive. Honestly, it was a bit surprising you hadn’t had people banging down your door yet, if not Steph than surely your neighbor would have called in a wellness check, depending on how long you’d been out.

Maybe they had and you’d just been so out of it you hadn’t heard them. But then why weren’t the police involved? Maybe it really was the next morning.

Shaking your head, you mumble “Man I need a drink...” as you headed for the bathroom.

A quick but thorough shower later and you were stood in front of the mirror, looking yourself over. It had slowly come back to you as you cleaned yourself, the events of the lab explosion and the guy that had a stroke or something right on top of you.

It was still so entirely weird, the entire event. Why had it exploded? What was the black goop? Some kind of oil, maybe? What if it had been something really dangerous, some kind of chemical warfare or something? Maybe you should go see a doctor…

The visceral disgust you felt at the thought was a little dizzying, but you had no idea where it’d come from. You didn’t usually mind going to the doctor, maybe… maybe you needed more sleep.

Just before you could do more than put on your bra and think about heading back to bed, though, a loud series of knocks came at the apartment door.

“Fucking finally, pfft.” You said to yourself, slipping on your t shirt and heading for the still insistent knocking. But just before you could reach for the knob, that same pause happened again, something in you tugging you back, making you wary of whoever was on the other side. You had no idea what this was and it was making you a bit pissed off, but to persuade the sudden intense caution flooding your head, you peeked through the door’s peephole.

Well… that was different. There were what looked like a few armed guards outside, all with guns on their hips and not an actual police officer in sight. Something in you bristled, though you were half sure this was just you too this time. People throwing their weight around, usually half cocked guys that got the job for having no sense of morality, really pissed you off.

“Miss ____?” one of them called, probably the guy that’d been pounding on your goddamn door for the past two minutes.

You weighed your options. You could open the door and almost certainly have a big group of armed assholes storm in, roughing you up (at least) and wrecking your apartment. Or you could act like you weren’t home and just kind of hope they left.

“Miss, open the door. Don’t make this harder than it needs to be.” he called again, making you scowl.

Yeah, they knew you were here. And something told you if they came in, they weren’t going to keep those guns in their holsters.

Of course you didn’t get much of a choice to think anymore about it, as one of them seemingly got tired of waiting and down your door crashed with a deafening crack, guys in black and brown fatigues storming in, and all at once your existence boiled down to-

‘PROTECT KEEP SAFE DESTROY EAT’

You blacked out. Was just totally gone, for seconds, minutes, hours, days. You had no idea how long you were out, just that when you came back from the inky, warm dark of your own mind you were standing at the stove, a big pan of what looked like tater tots in your hands, the oven door open.

“What the fuck…?” you whimpered, setting the tray down with a clang as you turned and ran to the living room. You don’t know what you were expecting. Blood, viscera maybe. A massacre.

Instead you were looking at a perfectly clean living room, even cleaner than you usually kept it. Everything was in place, not a single sign your life had nearly been ruined, if not ended.

Hand over your mouth, you worked your jaw as you desperately tried to figure out what was going on, only to pause mid thought as another voice joined your own. It was familiar in the worst way, the stuff of nightmares even as it calmly spoke.

‘I told you, you need to eat something.’

...What the fuck.

[hold-my-hand-selfships]

F/O List

A.K.A The Aurum Family!

Disclaimer (just a bit of a heads up): Most them were from specific medias, but over time they kind of grew and changed to become different from who they were from their canon source, so I’ve decided to simply list them as OCs.

Some are OCs of mine though, that were just roped in one way or another haha, though sometimes decide to change from time to time when they feel like it.

Again, I honestly just roll with it.

Also I don’t mind to share Romantic F/Os with other people, so don’t worry!

Updated: 20/05/2019

Romantic F/Os

Rick (Rick and Morty)

Gwyn Aster (Human!Underfell Gaster AU)

Rose (OC)

Dagny (OC)

Oracion (Palkia OC)

Raze (Symbiote OC)

Sterling (Dialga OC)

Zeal (Giratina OC)

Onyx (OC)

Platonic F/Os

James (OC)

Eras (OC)

Antiope (OC)

Bravery (OC)

Fang (OC)

Kenaz (OC)

Oisin (Lugia OC)

Hoshimaru (OC)

Adopted Children

Morty (Rick and Morty)

Syrius (OC)

Lazuli (OC)

Opal (OC)

Stellai (OC)

Lyrus (OC)

[yushox]

An old meme of all my Sanses. Just showcasing what they kinda look like. Some of the designs definitely are different now, but not by much.

Extra info!:

Oculus - Is canonically meant to be happily married to Gaster, although he currently is thought to be widowed. As for Papyrus? You will learn that info very soon ;)

Deka (Now: Dekla) - Canonically had a child with a mortal, but lost them shortly after birth

Confetti - Is in a symbiotic relationship with his host body, but in their connected minds they are also canonically dating

Recall - has a canonical platonic partner, sharing one canon ship child with said partner, the ship child would fall into the "I'll help you with it!" category of this meme. On the partners side this relationship is not canon to their story.

Key and Oculus is a personal crackship, their relationship would be toxic though.

Kart and Laim are now known as Karta and Laima.

Ricochet Papyrus would fall into the "Yeah sure" category, while his Sans would be "Lol nope".

Law!Sans would be in the middle of the "yeah sure" and "I'll help you with it!" categories.

[wingdingsareathing]

Gaster would be a hilarious/awful symbiote.

[paperprince2]

Possible Insanity Sans Take concept??

This isn't fully planned out but I decided to tell what I had in mind for so long.

Instead of being experimented by Gaster, the story takes place where Sans is Alphys' assistant. Alphys and Sans create a project that is meant to inject determination to monsters. However, this was the first iteration of the DT project and was only a prototype. The experiment was only a work in progress but it would look like black goo similar to the Symbiote from Marvel comics.

After accidentally breaking the glass containing the goo, it would enter his body and corrupt his physical appearance and personality. He would look bigger and huge similar to Dr. Robotnik from the Fleetway Comics. Black goo would come out of his eyes and teeth similar to Killer Sans. He becomes a beast who takes joy in tearing monsters' apart in creative ways. The monsters would make a resistance against Sans with the surviving monsters staying hidden in the True Lab. Stronger monsters like Undyne would face Sans but would end up getting killed.

Sans would be extremely smart and dangerous so he isn't a mindless beast. He's a genius and uses his brute strength and smarts to overcome his opponents

[cybertale-0]

Wait, so let me see if I got this right: Gaster has a soul core, and that's the stuff that powers him and stuff. Sans and Papyrus both have soul cores that are clones of Gaster's (I'm asuming also for power reasons). Gaster doesn't have an actual soul, so he can't feel feelings (grillster anon still feels sorry for sad flame). But since Sans and Papyrus can feel (or at least it looks like they can), they DO have souls? Like, real souls? (Is this spoilers? I feel like this could be spoilers...)

Nope. It isn’t a spoiler cause it is incorrect. ^^

First of, let me actually explain what a soul core is. 

A soul core is basically a generator built of the foundation of a shattered monster’s soul. it is held together by iron pins infused with determination. This soul (or I guess zombie soul) has no sentience. Think of it like a an organ, such as your liver or kidney. It’s function is to conduct magic. Gaster can use both magic and determination to power his suits and weaponry 

Gaster, can freely remove his soul core whenever he wants to. His Sense of self exists in his positronic brain. (Gaster cannot transform or manifest weapons when it is detached.)

This also applies to Sans and Papyrus. 

Don’t think that just because they Seem to feel means hey have souls.

There is another who seems to feel as well…

Anyways, 

In order for a soul to be yours, you have to be able to die when it is destroyed. Because a soul core does not act as a soul, Sans and Papyrus would still be alive if their’s were to be destroyed.

Hmm… I hope this isn’t too confusing.

Oh also! There is One other thing that I need to mention that is going to be tricky to portray without them getting the wrong idea so I’ll try and explain it here to.

The soul cores where construct from remnants of deceased monsters. Gaster has almost a symbiotic relationship with his core. On occasion, Gaster’s positonic brain will pick up these signals and start projecting them. Start feeling.

This is a bad thing.   

Why? Cause he will become a psychopath.

CyberHorror is a scenario where Gaster synthesizes with his core. Feeling the full spectrum of emotions, but only producing pleasure and joy in slaughtering the inoccence. 

Cybertale Gaster knows this. That is why he must not only pay close attention to himself, but also to his sons. Monitor them so that they do not fuse to their cores and develop psychopathic tendencies. If so, Gaster will have no choice but to destroy them to protect the Cybergrounds.

So in a way you could also say their soul cores are..

Parasites.