IZ Fanfic: The Alien in the Backrooms (Reader x Pred)

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Just a quick fanfiction for you to start off this New Year. I don't see much crossover between Invader Zim and the Backrooms with a bit of vore, so I hope this is a somewhat unique mix of concepts. All in all, I had fun writing this little one-off.

All feedback is appreciated! Let me know what I can improve in this story!

Invader Zim belongs to Jhonen Vazquez, Nickelodeon, and Viacom! I do not claim any rights to the show or characters! This story was written for fun/non-profit!


(Content Warning: This story contains the following elements: Soft/fatal vore, size difference, digestion, fat, belly patting, stomach gurgles, Irken pred, and prey reader! This is your last chance to click away if any of the above elements bother you!)

(NOTE: This story is NOT part of the official Backrooms canon. As such, some details may be different from the official wiki. Keep this in mind as you read this fanfiction!)

It seems like any other ordinary day for you, a wanderer within the Backrooms. The dank labrynth with that distinct musty smell is something that you are far too familiar with, and the buzzing of the yellowish fluorescent lights is something that you have long grown accomodated to. The cracks in the walls often run all the way up to the ceiling, and said ceiling appears to have a few holes in it. Though entities can enter through those, you have pretty much learned how to deal with the various common entities that lurk within this liminal hell, so those aren't as big of an issue as they were when you first arrived here.

As your feet press into the old, slightly damp carpet and you look upon the yellowing, water-damaged wallpaper, you notice a piece of paper that is attached to the wall. You approach this wall as look closely at the paper, and your eyes scan the various words inscribed on it. The wording is as follows:

"Dear Reader,

If you are seeing this note, then heed this warning. Do NOT, under ANY circumstances, enter the magenta mechanical door. If you do, then you will NOT be able to exit that area. After that, I cannot ensure your survival. Trust me, I have had some...experience...with the creature that lurks within. He doesn't take too kindly to wanderers."

Warm regards,

-D.M,"

Upon reading this note, a slight wave of confusion hits you. "Who is this 'D.M.'? Is it a fellow wanderer? Is it a native resident? Is it an entity?" you ponder for a moment. However, as if on-cue, the light in the corridor you are in burns out, leaving you in complete and utter darkness. It becomes so dark that you cannot see a few inches in front of your face. As you turn and stare into the inky blackness of the adjacent corridor, an unmistakable, large, bright white smile and pair of white eyes manifests itself in the darkness.

It's a Smiler, one of the most common entities in the Backrooms. It is also one of the most dangerous.

Upon this realization, your brain kicks into its flight response as you bolt through the darkness, the Smiler in hot pursuit. You are surprisingly quick for a mere wanderer, outmanuvering the threat that is growing further and further behind you. However, you know that in the Backrooms, one misstep can lead to your demise. So, you keep running for dear life.

In your blind panic, you run into what you initially think is a wall. However, just as you are about to make impact, this "wall" opens up and you trip into the room. The Smiler soon catches up, but before it can lunge and devour you alive, the metal door automatically shuts and blocks the attack. The Smiler tries to find a way to open the door, but eventually gives up. As you lay there on the cold metal floor catching your breath, your panic subsides for a moment...

Wait...METAL floor? At that exact moment, you realize that the door you enetered this room from was the door the note warned you about. As you gaze upon the magenta metal, the panic slowly bubbles within you like tea in a kettle. You promptly get off of the cold metal floor and run up to the door, only to find that it had automatically locked the second it closed. With no discernible way to open it, you are effectively trapped in this room, which looks almost...futuristic. The floors and ceiling are made of what appears to be the same metal, albeit its color is a darker shade of the desaturated magenta that paints the walls. A line of gray metal pipes runs along the ceiling, and lining the walls are what appear to be thin, translucent wires that allow you to see the electricity flowing through.

As you frantically search for another exit or something to help you open the door, you notice yet another metal door at the opposite side of the room. You make your way over to it, and it automatically opens. Having no other choice, you go through the door and deeper into this place, hoping to find either a second exit or at least someone who can help you.

As you walk through this magenta, liminal labrynth, you notice some interesting details. The walls and floor are made of that same metal, with the same wires and pipes running across them. Something that you note is that the dimensions of the corridors are unusual at about 75 feet tall, 75 feet wide. It's as if the area was built to accomodate something absolutely massive. The dimensions of the corridors make you feel as if you are simply an ant wandering through a person's home, and that feeling alone is unnerving by itself. As you continue to wander, you start to get a feeling that something is watching you. You look everywhere, but you cannot find whoever it is. This feeling being compounded with your megalophobia is almost unbearable, but you press on.

After a while of wandering, you enter what appears to be a much larger room, though this one is much different than the corridors. The walls are made of the same magenta metal with the same wiring, though the room is so tall that you cannot see the ceiling or the floor. You are standing on what looks to be a massive catwalk that is 100 feet long and 100 feet wide. The edges of the catwalk are bordered with what appear to be 30-foot-tall walls. The 30-foot-walls of the catwalk are a light gray while its floor is a light pink. The architecture of the room is unlike anything you have ever seen, and it seems almost alien.

However, you do not have much time to look around as you hear something faint and muffled coming from deeper within the labrynth. You pause, looking around for the source. In the dim lighting, you can make out the outline of what appears to be yet another massive door. You hear the sound again, and this time around it is much closer unmistakable. It is a higher-pitched, maniacal laughter that sounds vaguely human, but not quite. You are able to deduce that the laugh is coming from the other side of that door. You also hear and feel what sounds like a faint, periodic rumbling, as if something huge is approaching. This sends you into another blind panic as you turn to run out of the room through the door you entered from...

...The door doesn't open. Just like all the others before, it had automatically locked the second you entered the room. As you desparately scream for help and start braying on the door with your fists, the maniacal laughter is even closer. It is just outside the massive door on the other side of the catwalk. You hear a taunting, almost sing-songy voice from the other side of that door.

"Hehehehe...I have you now, you filthy Earth monkey..."

Shortly after, you hear a "ping" from behind that door, and it opens...

Sitting there is in the doorframe is a massive, 55-foot-tall, 400-ton male Irken. His oily, sickly green skin reflects a bit of the dim lighting, and his long, thick tail wags slowly. His antennas bend at an angle near the tips, and they twitch slightly. The Irken's large, glossy, ruby-red, two-pupiled eyes reflect some of the dim lighting, giving them somewhat of a glow like an animal's. This Irken is wearing a striped, shiny ruby-red tunic, dark gray leggings, and black rubber gloves. However, the tunic and leggings seem to be far too small to contain his huge, corpulent frame as his massive belly is poking out from underneath and the seams on his leggings are beginning to rip from his dumptruck of a derriere. He uses the four spider-esc legs from inside his PAK to get up and walk towards you, his frame wobbling like gelatin as his stomach hangs over his thighs.

The massive Irken approaches you and cackles eviliy. He sits, positioning himself to where his huge, gurgling stomach is mere inches from the your face. The Irken grabs you by the shirt collar with one of the four spider-esc legs and brings you up to eye-level. It is here you can see the details of his face, noting his large mouth with sharp, interlocked teeth and soft, dough-like cheeks. His neck is incredibly thick, and he seems to be developing a double-chin.

The Irken teases you, poking you with his short finger and chuckling with a distinct malicious, hungry look in his eyes. He proceeds to give your whole body a massive lick with his disturbingly long, worm-like tongue, covering you in alien slobber. He then speaks to you in that same, higher-pitched, taunting voice.

"It appears that you have fallen directly into Zim's amazing, voracious trap. You know, human, out of all of the creatures that find themselves here, you humans are always the most delectable bite-size morsels."

Zim proceeds to point at you, then back at his huge, gurgling stomach. He continues, "Well, anyhow. It is now time to show you exactly what Zim means by that. I'm going to have some fun eating you, you filthy human-SNACK..."

You are then dangled above Zim's voracious maw, hot, rancid breath grazing your legs as you struggle to break free. Your struggles are in vain as the PAK claw maintains a firm grip around your shirt collar and the tongue coils around you like a humid, slimy python. Finally, the voracious Irken drops the you into his maw, murring in sheer pleasure as his mouth closes and the tongue continues to cover you in slobber. Finally...

*GULP*...

Down, down the humid alien throat you slide, being absolutely covered in slimy saliva as the muscles on either side pull you down into the acidic pit of Zim's stomach, where you fall in and you meet your demise. His massive, squishy belly gurgles loudly as runs a chubby, glove-clad hand over it, murring quietly and licking the remaining human flavor off his lips. "So delicious..." he mutters, emitting a small belch and giving his huge belly a hearty slap, causing it to wobble profusely. His thick tail wags quickly as he giggles.

Zim then gets up and walks off, making his way through the tall corridors and entering what appears to be a room with several screens. All of the screens show the feed to all of the hidden security cameras. Zim proceeds to plop down in the middle of a large beanbag chair located in the center of the room, then sighs and leans back. "GIR! BRING A SNACK TO ZIIIM! NOW!" he barks towards the corner of the room. A small, bipedal robotic figure with light blue eyes runs into the room, dragging along a massive bag of mini donuts.

"Thank you, GIR", Zim states in a gentler tone, using his PAK claw to snatch and tear into the bag. GIR opens up his head compartment and pulls out a taco, eating it in a few bites. As Zim wolfs down the mini-donuts and licks the glaze off his fat, gloved fingers, he watches the feed and notices a wandering entity enter through that same mechanical door his human prey did. His thick tail begins to wag as he watches the entity get trapped inside.

"Ohhoho...a delicious, filling Smiler...What a magnificent treat for Ziiiim..." he mutters and cackles in between mouthfuls of donut, patting his belly and making it ripple slightly.

Smirking, he watches as they end up in that room and uses his four spider-esc PAK legs to make his way there, opening a panel in the wall that reveals a handprint scanner which he uses to open the door....