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ms-scarletwings · 1 year

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New (Cursed AF) Invader Zim Headcanon:

Barring the potential for major acute blood loss, Irkens can actually survive a full decapitation.

And I brought substance to make the case with.

Cockroaches, one of the most infamously durable of real life animals, can live for several days, sometimes even weeks without their head. And for the most part, they still even act like normal roaches- crawling about, reacting to touch, standing around, etc. it seems the only reason this eventually catches up to the critter is because no mouth = no way to keep bringing necessary food and water into the body. If that were bypassed, however, it stands to reason the little zombie could thrive just as much as a headed roach.

Almost disturbingly, the head itself can actually last a surprising amount of time solo as well. Experiments with decapitated roaches show that after body separation, roach heads can still move their antennae for hours before succumbing- much longer even if kept refrigerated and supplied with nutrients.

One of the neat things about roach bodies that makes such a feat possible is how their nervous system is set up- simplified ref against what yours looks like below

Now, anyone who has ever said a roach can survive for a while without its brain is not being entirely accurate. Functionally, they actually have two sort-of brains: the main point of nerve centralization is contained in the head, which for the most part is a primary brain responsible for movement coordination, certain technical functions, interpreting stimuli that comes in from the antennae, and more. The second main point of interest in this system is a series of nerve clusters running down the insect’s abdomen known as ganglia (singular: ganglion). These bundles of neurons are not exactly brains in their own right, but they do function as an extended CNS that handles the control over the digestive tract, reacting to stimuli, leg movement, and other more basic bodily functions. These can operate the body on a primitive level after the loss of the main brain, up until thirst/starvation begins to run the wind out of the sails.

You know what sort of creature actually DOES have two entire complete brains? One up top, and an auxiliary backup a little further down?

If you were nodding along and saying “irkens!” Then you would be correct! One peanut and five more days in the bunker for you 🥜 ~

As is obvious to anyone familiar with the show, the PAK is an essential cybernetic addition to Irken biology, holding their gear as well as an entire digital backup of their personality and memories. While it serves many functions to the user, the first and foremost priority of one is to protect the existence of the meaty entity it needs in to carry itself around.

To that end we’ve seen some autonomous acts from time to time with Zim’s close calls. If you recall “Plague of Babies”, he… kind of died for a moment there, caught up in a wave of GIR’s lethally amplified stupidity. In response, his PAK appears to resuscitate him with a quick jolt. The would-be events of “10 Minutes to Doom” emphasize the necessity of the PAK for any Irken’s survival beyond several minutes, which directly implies PAKs facilitate a major biological process their natural bodies are no longer capable of alone. Personally, I think it might be something either neurological or related to respiration, on a hunch.

Well, whatever it is, they are toast without it in swift manner, and the PAK doesn’t prefer to be without its other piece anymore than the body does. Dib’s revelation about the technology described their relationship with its body like that of driver and car, but I think he’s missing something. The PAK is actually more than capable of carrying itself around without the body… at least for a time.

When I think about those things, a little dilemma pops up in my head concerning how they.. well, how they’re powered. It is never explained or demonstrated that they are given time off of the body in order to charge; however, irkens are probably advanced enough to have some smaller and sci-fi wildly potent and small energy source up their sleeves, but actually, that wouldn’t quite make sense here. Because Irken bodies still produce their energy the same way every other lifeform in the known galaxy does, with food. Lots of food, actually. They can mow through snacks at about the same rate as Augustus Gloop. PAKs don’t need to produce their own independent energy source, they just need to efficiently make use of what this organism is already evolutionarily fine tuned to do naturally. Now that’s smart engineering.

And so, like any respectable auxiliary life support feature, they hold some of that energy in a reserve for those crisis moments like in “Plague of Babies”, and also in a deleted scene made for “Abduction”!

Fun trivia fact, but originally that episode was supposed to feature a sequence where Zim nearly game overs again. He takes a gnarly hit and a literal plunge through open flames that knocks him out in a free fall.

Despite his incapacitated state, the PAK extends its spider legs in order to catch a walkway railing, both saving his life and proceeding to keep carrying his limp body to a safer location, until of of course, he comes to about a moment later and carries on.

And neither of these are the only times it’s sprung into action the moment it detects something has gone horribly wrong. When accidentally detached from its own host, an emergency response will be triggered within the PAK in an attempt to reattach with its body. Failing that, it attaches instead to… well, whatever it can find.

In “10 minutes to Doom”, this was unfortunately Dib, an incompatible match (or maybe it just picked an improper attachment site), and in the comics… things got interesting at a point or two.

So, I already know what happens when you separate an Irken from their spinal brain, but what about the cranial one?

Because, they actually don’t seem on the same level of urgent necessity? Now that I think about it?

The time machine kerfuffle and the brain eating parasite escape were both events this guy evidently survived, albeit not comfortably or ideally until the problem was fixed (I have to assume in part with GIR’s or the Computer’s help). Now that I think about it Zim’s incredibly fortunate that most of these more serious mishaps happened inside of his base. But it’s theory time.

So, we do this, to a hypothetical green bug bastard

For fun let’s say, hypothetically again, like the hardy earth roach, he blood clots quickly.

Well, first and foremost, that higher up nervous system blackout is probably going to cue the PAK in to begin the following protocol:

1. Activate an emergency response to quickly access the situation.

2. Immediately scurry the body the hell away from whatever manner of threat just shaved a little too much off the top, engaging in all possible defensive measures if necessary.

3. Devote the entirety of its remaining backup power (of which it would have much more stored within the headless body than if it were itself detached) into making a beeline for the coordinates of the nearest Irken source of assistance. On the homeworld, or any fully colonized planet, this would be a cut and dry matter of finding the nearest theoretical space clinic or whatever those freaks have (maybe those dbz regeneration tanks? Idk that would be cool wouldn’t it?). For the lone invader… home base is the next best alternative, being a secured location with plenty of resources and advanced technology at the ready. I would bet my own head that situations like this are a huge highlight to the prime value of a personal SIR companion.

Now, best case scenario for what this help looks like depends on whether we can save and bring the head along too. Reattachment and repair at that point should be a pretty simple matter at the tech level we are working with, afterall. But that’s again, the ideal case scenario. Could they just… regrow the head eventually? We don’t really have a clear answer on what the limits and capabilities of what the Irken healing factor is, but I want to at least guess that having a personal lab and assistant on hand is going to help. Bare minimum, a solution can get worked out to supply the body with needed blood sugars again to buy more time.

The PAK itself retains a pretty much perfect digital backup of its body’s memories, experiences, and identity, so it’s not like information has been permanently been lost with primary brain damage. Replacing the primary brain entirely might be as easy as backing up your iPhone and downloading everything into some shiny new hardware. Hell, it may not even need be Irken hardware!

Do you know the real disturbing things from “Dark Harvest” NOBODY brings up are???

Why the fuck was an instantaneous organ-swapping device already just something Zim was carrying around in his toolset?

And

Zim’s morphology was horrifically receptive to those dozens of xenographs.

Those human organs were actually beating, pulsing, absolutely redundant and unnecessary in his body, but completely still functional and healthy in the name of selling his act to the school nurse. He didn’t just clumsily cram a bunch of offal into himself, he competently integrated them into his biology and somehow wasn’t suffering like… the tons of complications you’d expect from trying a stunt like that.

And in the comics, there’s this other fella I just adore for how skrangly he looks, and believe it or not, his actual fucking name is Skrang.

He’s a smart guy, though. Don’t be fooled. And I mean like, a smart guy. And it’s all thanks to a little help from a little upgrade he’s been fitted with :)

So, I hope you take all the implications I’ve been building here and make what you will of them. I genuinely think an Irken has a decent chance of making it out of a beheading alive to seek sadistic vengeance another day. Do I think ZIM could do such a thing? Tbh, I think he’d have to rely on GIR to come in clutch, and we may know that’s a complete roll of the dice in any case.

Wow, this got morbid, but, par for the course really.

#invader zim #iz headcanons #iz analysis #irkens #cool bug facts #cockroaches #iz skrang #scarlet talks about things #long post #anyway now I just want the hypothetical where dib reacts to this scenario #cause that would mess me up for a long time #like just picture a fight with your nemesis gone HORRIBLY wrong from some accident #and then dude just shows up the next day in class like… fine but pretty pissed off about the whole thing #and then he jumps over the desk and strangles you when you make bad puns about the whole ordeal #comedy/horror GOLD #HELP ME THIS WAS SUPPOSED TO BE A SHORT POST BTW #NOT ANOTHER GD ESSAY #oh boy here i go hyperfixating again

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