Hello fine folks! Before this story starts fully, I'm just gonna give a quick disclaimer: I DON'T OWN The rights to the absolute insanity that is Chainsaw Man Nor is the absolute awesomeness of Generator Rex!
Also special thanks for Maximum Rhapsody for giving me that final push to actually start writing this down on ( the proverbial) paper. I was originally going to make a Cyberpunk Edgerunners Crossover, but someone already made it.
Go check out "The Alpha Punk" By: Fire Wolf 2132! If the author is reading, Thank You! I was partially inspired by your works on Generator Rex, especially with the inclusion of Alpha!
I also did this crossover because...the two series has similarities that I couldn't for the life of me overlook. (Even the unofficial Generator Rex subreddit pointed it out, in meme forms of course)
Denji and Rex are:
• Both can make machines out of their bodies (one is limited than the other, but my point still stands).
• Both fight creatures that are both their respective world's equivalent to monsters
• Both are hybrids of that said monsters
• Both works for a government organization that fights those said monsters
• Both wants to live a normal life
• Both are simps for their mommy (Makima, Rebecca)
• Has a companion that is a very serious guy, stoic, takes his job seriously than others, wears a suit, and has a katana for a weapon (Aki, Six)
• Has another companion that matched, if not out matched, their already chaotic nature (Power, Bobo)
Okay, I think that's enough for me to get my point across. And without any further delay, I, The Evo King, present to you all;
ALPHA'S ADVOCATE
𝙲𝚑𝚊𝚙𝚝𝚎𝚛 #𝟶.𝟷: "A Boy And His Amazing Fiends!"
Stars...
Those marvelous shining beams were a sight to behold on Earth's Landscape. It's...fascinating. A light that seemed small in the eyes of a mere human living on earth yet was apparently more extensive than any of them, even larger than the earth itself.
On earth, humans sometimes look up and ogle at the pretty stars, even playing a game of constellations. But stars appeared naturally every night, every time the sky turned black, so humans don't frequently look at it every time.
That wasn't the case for one teenager.
Somewhere, deep through the trenches of a forest, lay a teenager with a dark skin complexion. He wore a shaggy red jacket that seemed a little too oversize for him. It had an orange lining on the tips of each sleeve and also on the end of the jacket tail. Below, he wore an equally rigid black pants with four different outline shapes, and to top it off, his feet were consumed with a matching black shoe.
This was Rex, and he couldn't help but let his eyes wonder what was above him and many others.
A yawn then forced its way out of his throat. His eyes never left the sight of the night sky, yet they became drowsy. It was clear that the exhaustion was trying to elicit him to go to sleep. And he couldn't agree more.
He let his eyelids slowly drop down as the feeling of unconsciousness consumed his body. It was a peaceful sleep, way more peaceful than he had expected, which made his inevitable wake-up all the more irritating.
Rex woke up, feeling as if he didn't get any sleep. His eyelids contorted, slowly opening once gaining his consciousness back.
Well...he certainly...slept, at the very least.
His peripheral vision indirectly got in the way of the sun's crossfire. The blinding light gave Rex a slight sting on his eyes, momentarily waking a part of his mind up.
"Augh~" A groan of displeasure escaped his throat.
Rex rolled over where he had his back turned, which was the ground. He pushed himself up, putting him in a kneeling position.
He stayed in that position for a few minutes, just enough time for him to catch the cool breeze that blow pass by.
The gust of wind gave him a cool feeling against his skin, and a pleasurable tingle rolled over his body. No matter how simple it was, it was enough for Rex to get on his feet and venture off.
Certain areas of his body still felt asleep, or aching as sleeping on the ground wasn't the most comfortable spot to lay on. But still, he walked it off. During his uneventful trip, he took in his surroundings, believing that he has nothing else better to do other than to walk to his destination.
The sky displayed little mounds of fluffy looking clouds floating around the atmosphere like it usually did. The sun beamed above the earth more strongly than what Rex needed. His rigid jacket wasn't helping as a mighty heatwave struck upon him, leading to him compiling sweat around his body.
Rex could've run to get to his needed location, but he believed it will only make it worse. So, he decided to tolerate the sun heat. Though, he would have a much better time coping with the heat if it wasn't for his jacket.
Peeling off his jacket, Rex used the clothing as a makeshift to block out the sun.
Forty minutes, but felt like an eternity, later, never before have Rex been so relieved in his life. He had arrived to Tokyo, probably the largest city in Japan. But even with this new relief in his face, he still hasn't arrived to his destination.
Just a few more blocks and he'll be all good. Wasting no more time, Rex made his way through Tokyo. The city was as crowded as usual, with pedestrians walking at literally every direction. Rex expertly manoeuvred himself just to avoid bumping into random citizens. He practically became a snake with how much he slithered through the small crevices.
He thought he was gonna continue on with this song and dance a bit more, but the corner of his eyes caught on to something that Rex couldn't let himself pass off; a vending machine. Which held sweet, refreshing, juicy, flavourful, & tangy beverages.
His mouth was watering by the thought of him finally drinking grape sodas alone.
Taking a moment to look at his surroundings, he found himself in the clear. Rex inconspicuously pressed the palm of his right hand into the metal cold barrier that surrounds the beverage that Rex wanted.
Not soon after, blue lines in a form of circuit patterns began to appear in the particular spot of the vending machine. It wasn't noticeable, especially in the spot where Rex was at, but once you saw it, you can't stop and think to yourselves; what the hell is he doing?
See, Rex is special in his own way. He's not a regular human, yet he's not a devil/fiend. He's something more...something that was in a league of its own.
Even the boy himself questioned what he is, and what makes him so different from others.
*Clack* *Clack* *Clack* *Clack*
The sound of a tin-can landing indiscreetly on the pick-up box snapped the boy's thought out. Rex knelt on a knee and shoved his hand into the shouter. He retracted his hand back, which was now carrying two cans of soda.
Rex slightly smirked. It didn't matter whatever he was, he was just thankful that he had It in the first place to even be able to breath in this world. A world that is plagued by life ending threats known as Devils.
Devils are born from fears, just the general concept of fear, it isn't limited on just humans. They derive from it. With how much one concept is feared determine how strong they can be, like guns or chainsaws.
Naturally, humans are quite fearful of a lot of things. So, you can guess just how hard it Is to survive without coming across at the very least one devil.
Rex's abilities might be out of left field, but he ain't complaining when it saves his life from being cut out on multiple occasions.
Using his free arm, Rex reached inside of the pick-up box, only to once again retrieve two soda cans.
He then stood up on his two feet and continued his journey to his destination. A small part of him was dissatisfied by the numbers of soda can he got, but he could only carry so much without the assistance of an echo bag or something.
Still though, he marched on. And once again, he was met with a huge crowd of people walking in a moderate pace through every direction of the sidewalk.
His eyelids twitched in annoyance. Walking felt more like weaving in Japan rather than a simple one foot forward and the other comes next. Deciding to just roll with it, Rex walked with the pedestrians in the same speed of a snail, avoiding to recklessly ran through the crowd like some kind of football player.
After a lot of hustles trying to not get anyone's attention, Rex finally made it to his destination; a dark alleyway.
What's within the alley way wasn't anything out of the ordinary, just loaded to the brim trash bags randomly placed in the corners of the alley. But that wasn't what Rec was looking for. What he was looking for however was up.
Stepping back a few steps and then going to a squatting position, Rex's legs sprung him up two feet above the ground. Using his parkour training to good use, he took advantage of what momentum he got left from the jump and practically ran in parallel to the wall.
Once he noticed that he'd reached the apex of his momentum, he used the time he had left on the wall to jump towards another one. He twisted his body to face the other wall in his front.
Not even seconds after his feet touched the wall, Rex mentally figured to just go for it. He squat down in a matter of microseconds, and launched himself up again.
Thankfully, that's all that he needed. Rex perched on top of a building's roof. Though the landing needed more work as his feet slipped once making friction with the floor, which led to him falling on his ass.
That fall wasn't painful, but it certainly stung bad. Letting the pain simmer down a bit, Rex let out a groan of pain. Lifting the side of his butt, he rubbed it as if it would make the sting fade away.
It didn't, but at least it became bearable enough for Rex to stand in his own two feet. Deciding to ignore the ache, he slowly walked towards a large wood-made water tower.
The structure looked like it was run down, with pieces of wood misaligned together, leaving small gaps on the walls. And as shaggy as the structure was, it wasn't really made to be a water tower. No, it was made to look exactly like a rundown water tower, so that no one would bat an eye.
It also was Rex's home. And he was contempt with it. His house didn't need something unnecessarily fancy; he just needed a roof above his head and he's good to go.
Making his way on the front door of the shack, Rex gathered all his souvenirs onto one arm, giving him a hand to knock on the entrance. Extending his free hand in front, he gave the door five hollow knocks before sinking his fingers into the small crevasses and smoothly sliding it open.
"Oh Honey~! I'm Home~!" Rex playfully shouted when entering, announcing his presence towards the fellow residents of this very shack.
A groggy groan was heard from the deepest insides of the shack, leading to Rex's eyes trailing where he assumed where the sound came from. His irises settled on the couch, which had its back turned on him.
Rex's lips unconsciously stretched into a warm smile once his mind clicked on the familiar tone of voice. Not too soon after, a familiar messy (terribly dyed) purple hair protruded out of the couch. The one that the said (terribly dyed) hair was connected to turned her head towards Rex.
"What took you so long?" Came a rhetorical question from Rex's on-and-off, kinda-sorta-not-really girlfriend that just so happened to be the opposite sex; The Cricket Fiend or what she likes to be called 'Cricket'.
She was off green with (badly) dyed pink hair, parts of her uncovered body sporting a variety of chitinous spines. Her jaw was notched at the corners, extending much further back as the plates overlapped, false fangs coming up from her nonexistent lower lip and spindly antennas growing from her brows.
"Had to run some errands for Quarry." He could've told the truth, but he prefer to keep his late night outings closed doors. Plus he prefer to be alone while he's at it.
"Let me guess..." A new yet familiar voice came into the fray. Both Rex and Cricket turned their heads towards where they assumed the voice came from. "You were star watching again?"
In the second floor, a shadowy figure walked into the twos peripheral vision. As ashamed they were to admit it, it now just clicked on their minds on whose voice was that.
The shadowy figure casually formed into a sorta strip-like material. The seemingly endless strip of grey bandage fell onto the floor. And as soon as it made contact, the bandage swiftly took form of a humanoid figure.
He was just about a little taller than Rex, made up of mummy wrappings and dressed in a plain black t-shirt and dark crimson pants. He also has pure red dots for eyes.
This was Tuck, or The Mummy Devil.
Rex was surprised. Not because of his entrance – he does that nearly everyday. It's because Tuck knew at all. "How... How'd you know?" Even though Rex was embarrassed that he was casually caught red-handed, his curiosity couldn't help it "And how long?"
Rex slightly gave Tuck a half-hearted glare as he took a few steps inside and closed the door with his foot.
"Oh just about last week," Tuck then responded with a all-too-knowing smirk, before once again turning himself into a strip of band and crawled towards the couch. He materialized back to his humanoid form, sitting right next to Cricket while also giving enough space between for someone special. "I followed you after our last mission."
Rex groaned in annoyance, shutting his eyes closed while his lips puckered into a frown. " Who else knew?" He reluctantly asked, opening his eyes back again, and looked at the Mummy Devil.
Said Devil pinched the end of his lips and zipped it all the way to the other end, mimicking a bag being closed by the zipper. "Kept my mouth clean about it. No detail escaped from these lips."
Just as Rex thought he was given the opportunity to take a sigh of relief, a new voice came in with a monotonous pitch; "He lied... again. He told me." Coming from the back room, A hunched back figure made himself known.
As he continued to walk towards the trio, the figure had his hands in his jacket pockets. He was tall and bulky, made up entirely of dark green tentacles in the vague shape of a person. A single pale, pupil-less eye shone from in between locks of fleshy 'hair', that resembled a squid.
This was The Squid Fiend, or what the gang calls him; Skwydd.
Now, Rex would be so angry at Tuck, but he should've expected this already. He's a devil, the fact that he's in a Rex's team was a miracle in it of itself – Hell, having two more obedient fiends was also a miracle – so, a little chaos here and there was to be expected.
So, the black haired boy just sent a deadpan stare at the devil, though it went ignored as his attention was on someone else.
Tuck looked at Skwydd in irritation, his red dot-like eyes seemed as though it was trying to burn itself onto the fiend's subconscious. All of it went noticed by the fiend itself but was nonchalantly shrugged off in a matter seconds.
"Hey! We talked about this! I told you to keep it to yourself!" Tuck strongly yelled.
Skwydd – merely shrugging at his anger – replied in the usual monotone voice; "What can I say? Snitches eventually gets karma."
"That's not even how the saying goes!" Tuck's annoyance only risen when the fiend said that, he's 99.0009% sure that Skwydd purposely butchered that phrase just to screw with him.
His theory was proven in fact true by the way Skwydd had a smirk on his face.
"Alright, alright, that's enough." Rex spoke up, disarming the tension between the two. He then gave Cricket one of the soda. "Anymore secrets he's not telling?"
The only 'normal' person in the room threw a soda can at the Squid Fiend, who managed to catch without any effort. "Not any about you in particular, no."
Rex closed his eyes and sighed in relief, silently glad that the Devil had no more dirt on him. He then shook and tossed the last soda at Tuck, who caught it right as the can was inches near his bandaged face.
The moment he opened his eyes, Rex spotted a familiar rectangular item; the remote. Rex couldn't help but feel some excitement. At home, nothing else to do, drinking sodas, and watching TV? Doesn't get much better than that, Rex decided.
He bent down and reached for the remote. Right as his hand touched the thing, Cricket asked; "Heeyyy, why didn't you invite me?"
Rex stopped at whatever he was doing, turned to the Cricket Fiend, and stared owlishly. She had this weirdly cute pout look, that Rex felt pressured by, and he didn't know why. "Y–... You'd like that?" He questioned back, perplexed. Star watching was like a time for self reflection for him. Do Fiends, or devil's in general, even self reflect?
"I mean I don't get the appeal. But if you're into why not try you know?" Cricket gave her reason. Though Rex wasn't convinced, star sighting mainly consist of laying down and stare st the stars before you grow sleepy and wake up the next morning with a bunch of rashes on your back.
That certainly sounded boring, if Cricket heard it... There's also another reason as to why Rex wouldn't let her join him.
"Yeah, you two would get some time alone." Tuck intervened, slouching his back against the soft material of the couch. "I can finally have this whole place for myself for a change–"
"I'm still here, by the way." Skwydd said, feeling as though he was forgotten.
"–And, Oh Yeah, It seemed like a romantic place to confess. Tell me Rex, when are you gonna finally give her your answer?" Tuck's smirk came back with a vengeance, as he pinched the lid opener of his soda can.
Rex's eye twitched, with a sudden desire of wanting to rip him to shreds lit up within his mind. Swear to God, this Devil is just nonstop mischief. What's worse is that this is probably the most tamed Devil he'd ever seen!
...Yeah, that's the other reason... Instead of showing his frustrations out like what Tuck expected, He just slightly smirked. "I dun' know, how about you open the can and find out."
Tuck's bandaged face seemed to contort into a face that mimic an expression of confusion. How's a soda can able to answer his question? But since he was already at it, he might as well, besides curiosity got the better of him.
*Sprit!*
The soda's contents discharged and sprouted up to the air like a water geyser, spreading all over the Devil like wildfire. The aforementioned Devil was visibly caught off guard, quickly shielding himself with his free arm as a last attempt.
This poorly did anything well and only spread across Tuck's arm more successfully.
Rex couldn't help but feel satisfaction to the sight, he could almost feel his smirk reaching to both of his ears. Easy Revenge!
The two Fiends slightly took less amusement than Rex, but still found the sight to be funny.
"Okay, okay, you got me!" The Mummy Devil begrudgingly admitted, setting down the half-empty/half-full can onto the table. He stood up from the couch and flap both his arms. Excess juice trickled off him but was still left wet. "Meanie..."
Rex ignore him and took the remote in his hands. He leaped back on the free space between Cricket and Tuck, and pressed the power button on the remote.
The TV displayed a black screen for a few minutes before turning on and switching to a static screen, while the unholy sounds that came along with it rang all across the place.
The gang visibly cringed as that sound continued, feeling as though their sense of hearing were being attacked. Rex quickly changed the channel and what the TV ended up showing was the recent news.
Rex was about to change the channel, finding news in general to be boring, but something the news reporter said that made him stick around.
"During the phenomenon, it's said by multiple people near the event that The Bat Devil had made a rampage, but thankfully was stopped by a man with a chainsaw for a head–"
This also got the attention of the rest of the gang. A Man with a CHAINSAW For A Head? That sounded Metal!
"Locals didn't had the chance to picture the chainsaw man's face, but they did however caught the man's face." The screen cut to an artist interpretation of said Chainsaw Man. It's exactly what they expected, an honest-to-god chainsaw head occupying a man's entire head.
"Looks like Rex isn't the only one to make machines out of their body anymore." Skwydd commented, taking a swig of his soda. "Hey, maybe he can be a replacement for Rex if he ever dies."
Rex narrowed his eyes at him. "I'm gonna brush that one aside...And who says you guys wouldn't die right besides me?" He retorted back.
"We're devils, we can heal from just drinking blood. You on the other hand aren't." The Fiend replied.
Rex's eye twitched. "Y'know with comments like those, I'm still wondering why I stayed with you guys through all this time." He grumbled.
"Oh that's easy..." Tuck spoke, with his usual confidence in display. Rex subconsciously braced for whatever tease he's gonna come up next. "It's because Cricket is here, right~?"
Predictable as always...
Heat rose up from Rex's neck to his face, though he still tried to maintain his stoic demeanor. Instinctively, he took one quick glance at Cricket to see what her reaction were.
Cricket was idle, as if waiting for Rex to answer that question. For a microsecond, both of their eyes met, and Rex reflexively looked away before she noticed.
Too bad she'd already did, but she chose to stay quiet.
Wanting to get out of the awkward circumstance he was suddenly put into, Rex quickly used the remote and changed the channel again.
The TV screen showed one of Rex's favorite kinds of series; Soap Operas. One of his favorites among them were "𝐸𝓁 𝒜𝓂𝑜𝓇 𝒟𝑒 𝐿𝒶 𝒫𝒶𝓈𝒾ó𝓃 𝐸𝓁 𝒜𝓂𝑜𝓇", which was coincidentally airing right now.
"YES!" Rex happily cheered, having a big wide grin on his face while pumping his fist up to the air. The rest of the gang saw what was displayed in the TV, and groaned simultaneously.
They outright hated this show. The actors were too over-dramatic, the plot made no damn sense, and the characters were all too annoying to bear with, much less care for...yet Rex was eating it all up!
Like what made him be so obsessed with this show? Nothing about this show was great, yet Rex was praising it to high heavens.
"Can we please change the channel?" Skwydd monotonously spoke up on behalf of the gang. Cricket mentally thanked him, she couldn't bear this show even if it's for Rex.
"Awww, come on! This is the series finale! Just one more episode and I'll be done with this!" Rex exclaimed, looking at his buddy with those puppy dog eyes of his. "Please?"
...Skwydd had every reason – EVERY REASON – to dismay Rex's plea...But yet he couldn't do it. He didn't know why. Why was he fine with this? Was it because he grow attached to Rex? No...that can't be, Devils doesn't get attached towards their prey...So, why was he taking Rex's feelings into consideration?
...It's probably this putrid body he possessed, the brain of this body's owner must've been remained partially intact, which meant it was infecting him this whole time...!
"Tsk..." The Squid Fiend clicked his tongue in dismay. "Fine..."
The reactions towards this varied; Rex responded happily with another pump of the fist, Cricket drew a sigh of defeat, and Tuck yelled "WHAT!?" in shock and betrayal.
After that...it was endless torture for the Devils and a constant excitement for Rex during the showing of 𝐸𝓁 𝒜𝓂𝑜𝓇 𝒟𝑒 𝐿𝒶 𝒫𝒶𝓈𝒾ó𝓃 𝐸𝓁 𝒜𝓂𝑜𝓇. Skwydd felt mostly regret of letting it run...but found Rex's over-the-top cheerfulness for this show to be amusing nonetheless. So it wasn't necessarily a bust.
《==『•』==》
He wanted a chance to live...feel emotions...feel complete...not to be a literal killing machine.
He wanted to know how other beings experienced life. There's so many different organisms, it's quite fascinating to see what difference one life style has with another.
But alas, he's stuck like this...Stuck as The Nanite Devil...unable to feel emotions. Just an anomaly that it's mere existence was associated with beings that threaten to end all life...instead of preserving it.
If there was a way to feel...normal(?) He would take it.
...There was no other way. He's stuck with this nature to thrive around the blood of every living being just to keep himself from entering hell's door again.
A steaming red glowing sphere flew through the blue skies above Tokyo, flying almost aimlessly. The red sphere continued on, until a flock of birds flew across its path.
Almost seeming hesitant, the red sphere took a few minutes in contemplation before floating near towards the flock.
The birds were ignorant at its presence, making the sphere all the more uncertain about what he was gonna do... They're just minding their business...they're not hurting anyone, nor were they causing destruction.
He should let them be...
....̷̭̊͂͝.̵̱̂̓.̵̡̖̙͠I̴͔͗̿̀'̸̙̭̾̑m̵͈̫̖̌͆͝ ̷̡̛̻͔̅H̶̜̅u̸̧̖͂̚n̸͖͛g̵͙̩̃r̸̲̄̄͝y̸̨̖͉͆͐̈́.̷̢̦͂̌.̸̳̀́̚.̴̭͙͐͊̃...
...
As reluctant he was to say, he had to do it...for his own survival. The red sphere took on a form of a large flame and consumed the flock of birds, eventually satiating his hunger.
After that, the flame went back to its previous form, and flew off. Moments later of flying around, the red sphere landed on a random building and abrupted into flames.
Those said flames then formed into a lean humanoid figure. The figure wasn't anything human at all, it lacked flesh and blood. The being seemed to be made up of some kinda energy. His core rested within where the heart should be, and the further away it was to his body, the more transparent that certain part was. His form gave off wisps of smoke, one being notable was his head part. His eyes stood contrast to his body color with it being pure white eyelids.
This was The Nanite Devil, Also Known As Alpha...
This is where I'll end this prologue chapter in here. Had a lot of fun making this from scratch, and I'm excited to write for the next chapter. This chapter is a little slow than...y'know, the usual "Chainsaw Man" pacing, so that's why I made it a prologue instead.
Please excuse my poor grammar as it's not my mother's tongue and it has been a while ever since I wrote a chapter. I've been busy, I joined like 3 dance programs in a row, and my feet are killing me. But don't worry, the rest of me is all good~!
Also, please understand that this story will be inconsistently updated, due to time restrictions as usual. I'm also going to take my time with this, since I just...feel like it idk.
For anyone curious, this isn't gonna be the same Rex as canon. Different upbringings different personalities, but I won't completely stray away from his canon personality, I love my boy too much to do that!
As for the Pairings, Yeah I have no idea. I would go for just focusing on the story, but Chainsaw Man's highlight was pretty much character interactions, in my opinion. And It's inevitable that readers will leave with a review that's not even a review at all, It's just the pairings they want.
So I propose a vote, but please enumerate on why you chose that pairing. I don't want a "ReX x YoShIdA! cUz WhY nOt?" That's not a good enough reason for me.
Anyways, that'll be all for now! Thanks for Coming By!
— Much Love, The Evo King