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sansxfuckyou · 4 months

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all of a sudden

Summary: Casey Jones is good at adapting, but he didn't expect to be adapting to mutating

Warnings: body modification, small panic attack, angst in general, check Ao3 port for full tags

Authors Note: inspired by the possum Casey Jones AU made by @probably-not-a-rutabaga except with some rasey vibes that can be ignored if thats not your style. anyways, hope ya'll enjoy and if you do consider dropping a reblog or checking the ao3 port

It's covered in fur and has claws instead of nails, it's hissing as the mutagen worms through it's body and then it's dropping.

It isn't Casey Jones anymore, something much more creature. Chest heaving up and down and furred body immobile, hockey gear still strapped to it's form. Raphael just stares, in shock, in awe, partially paralyzed by the fear and the worry.

His partner in everything just mutated, into a rat, or something very rat like. And Raphael didn't take the hit, he should've, he probably would've went mad or turned to a primordial ooze of some sort if he did but it would be better than Casey having this fate. He slams the final Kraang against a wall before hoisting up Casey's body, it's light, lanky, mammalian.

Donnie can fix him.

-/-/-/-

"What happened?!" Was Donatello's first response to seeing Casey, "Who the fuck is this and where's Casey?"

"That is Casey," Raphael supplied.

Donatello nearly faints.

"Fix him," Fingers trace over the expanse of almost matted fur where the jacket does't cover anymore. He feels this deepseated guilt as he looks at Casey, he could've stopped this, he could've taken the hit. He should've been the one to get hit with that mutagen blast, not Casey.

"I don't think I can, I'll try but I think it's hopeless," Donatello claimed rather boldly, "I can probably stabilize him enough to keep his humanity-"

"Then do that, just don't lose him," Raphael practically begged, "Please."

-/-/-/-

There's the sound of someone shrieking followed by a shatter that draws Raphael from his state of almost there but not quite. He's quick to glance over to Donatello's lab to find a rat rushing out and freaking out. Terror is apparent on it's face as it glances around frantically in search of something to look at it's reflection.

"Casey,"

It whips it's head around to look at Raphael and it's absolutely Casey Jones, just in a different body. Taller, thinner, furrier, but it's still Casey, panic and fear, but all Casey. The turtle slowly walks over, as if he'll spook the possum if he goes too fast and he probably will.

"Raph," It speaks softly, quietly, voice cracking. Then it's leaned against it's partners plastron, holding on tight and crying. It's so confused, so lost, so wrong, "What happened to me?"

Raphael doesn't answer right away, just holds onto Casey and doesn't let go. A snout is nuzzled against his neck and they were the same height once, not anymore. He rubs circles onto the possums back, "Mutagen."

"Oh god," is all Casey can supply in response to the new knowledge, body shaking even more, "I'm not human, I'm not-"

"Yes, you are. You're Casey Jones, I promise," Raphael answered with before Casey could spiral, "You're still my partner, still our best friend, still Casey Jones."

There's a weak nod even though Casey doesn't believe a word coming out of Raphael's mouth, "Okay."

-/-/-/-

Casey Jones is an opossum, almost a rat but not quite, and he has an eternal vendetta against the Kraang. He lives in a sewer because of them, he's an animal because of them, he lost his sister because of them. Everything out there is gone because of them and he could do nothing but sulk in the sewers over his new body.

And now he's out in a farmhouse, naught but an animal and he swears he's losing his grasp on humanity a little bit more everyday. But he digs his claws in and tries not to let go because he's got the turtles, a group of four that were never human in the first place but have treated him so much better than any human ever has. If they learned humanity from a rat then he can hold onto what he already knows for his sake and their sake alike.

Hockey stick against sai every single day. Baseball bat against bo staff every single day. Fists against nunchaku every single day. He holds onto that humanity by working out the animal in violence whenever he can. He burned the scare crow mutant to a crisp when no one was looking, he grabbed his lighter and lit it up before anyone could say a thing. Before it could hurt anyone else.

He eats meat and steals scraps off of every one's plate because he's still getting used to the needing to eat every couple hours thing in smaller portions. He sleeps in the morning and wakes at noon, training every hour he's active because what else is there to do aside from chat and play shitty board games.

"Hey, Case," Raphael begins as he watches his partner eviscerate a raw slab of meat on a once white porcelain plate.

The possum snaps up and his pupils are slit, he has blood smattered on his snout and stuck in his fur, dripping from his whiskers. He just stares and chews before swallowing, "Yeah?"

"Do you want some water?" Raphael gently nudges over a glass and Casey is quick to grab it with bloodied paws, he drinks it eagerly.

"Thanks, still getting used to this," He gestures vaguely to himself, "And the meat cravings, and the sleep schedule."

"I know, just try to ease up on the craze, I think you scare Mikey sometimes," Raphael said.

Casey shrugged, "Oops, that's why we eat in the kitchen instead of out there with everyone else."

Raphael just rolled his eyes and took another bite of his pizza, "We'll go out and train after this, work out some of your energy."

"Fucking wicked," Casey answered with.

-/-/-/-

This is the closest Casey Jones will ever get to feeling like himself ever again.

Tip of the sai to his throat and all he does is smile because this is home.

Hockey stick to the back of his partners knees and all he does is smile because this is home.

Cruel words spat and all he does is smile because this is home.

Raphael pierces the tip of his sai into Casey's arm just to draw blood, just to feel pain, to understand what keeps him human.

And Casey Jones has one thing to say in response to the violence.

"Thank you,"

#tmnt 2012 #opossum casey #tmnt 2012 fanfic #raphael tmnt #teenage mutant ninja turtles #tmnt fanfiction #writing #fanfic #fanfiction

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boots-with-the-fur-club · 6 months

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Here is something I wrote for auvember!!

Tournament

@daboyau

@tmntaucompetition

The three sets of brothers stood in the arena with their knuckles all white from holding their weapons so tightly.

They were sets with missing pieces. Those crucial pieces were part of a completely different set at the moment.

It had all started with the turtles who officially started their top side heroics in 2003.

According to them, it was just a regular patrol night.

Their Leo had heard a strange noise and went to go investigate. They, of course, followed after him only to see a portal they didn’t recognize and a glob of pink attached to him.

They tried to help him. Despite the obvious pain he was in, he managed to warn them not to touch him.

Raph did not want to listen to that and reached for whatever it was to get it off.

That’s when Leo moved away with an animalistic growl.

The three turtles watched in horror as the pink glob had taken over his entire arm and up under his mask.

His eyes had started filling with an eerie pink glow that matched whatever had gotten on him.

He went through the portal right after which closed behind him.

Similarly, the version of them that was finally allowed to go to the surface in 2012 were also on a patrol when everything went down.

They had been racing rooftop to rooftop towards where they’d meet up with Casey and April.

Leo had started trailing behind which was already unusual.

The further they went, the more Leo slowed down. Eventually he just stopped completely, spacing out as he looked into open air.

Once they noticed this behavior his brothers stopped and went back to the building next to where he was standing.

They called out to him but it almost seemed like he was listening to something else talk.

Just as Mikey was about to toss a water balloon to get him to snap out of it, Leo’s eyes began to glow red.

They closed the distance between them too late. Leo willingly hopped off the building into a portal that closed immediately after.

It was more complicated for the turtles who took their crime fighting more seriously in 2018.

Their story actually began in 2020 though, after they fist met and defeated their version of the krang.

They didn’t want to leave their Leo alone much at all because he had barely gotten done with healing and they all were recovering mentally after the most traumatizing time of their lives.

He was feeling just a tad bit suffocated and told them that. So, they left him alone for a bit in the living room to read his comics.

When they heard a scream coming from there they nearly fell over each other to get to him.

Leo was pinned down by several men in business suits. They looked far from human with their strength and vacant stares.

That and the sight of an open portal nearby caused the three of them to tear into the intruders.

They only realized they were robots when they were taken apart. The weird brain looking things inside that would run off into the portal only confirmed their suspicions.

Just as they had thought that they’d taken care of enough of them to let Leo stand up, one of the robots slammed a device onto the back of his neck.

Raph had slammed into the robot and sent it rag dolling into the portal.

Leo got up and took out his swords.

Raph barley managed to avoid getting cut when Donnie and Mikey yelled to warn him.

Without a hint of reaction, Leo had left them all behind through the portal that vanished with him.

Raph and Donnie had to stop Mikey from opening a portal that would nearly destroy his arms again.

They and the 2012 turtles had some knowledge with portals, but not enough to find out where exactly their Leos had gone.

The 2003 turtles had inter-dimensional allies they could ask for help.

They traveled to the land of their Battle Nexus after informing their Splinter and gained permission from the Daimyo to use his war staff.

The staff, having a mind of its own, brought both the remaining 2012 and 2018 turtles to the 2003 turtles.

After a hight amount of chaos, 3 attempted fights, and high scientific curiosity between Donatellos, they were finally able to explain to each other what they had experienced.

18 Donnie was not very surprised at all about alternative universes as he basically had photos already of most of them.

They all however had understood that the Krang, and some other alien nearly as evil called the Necro Monster, had banded together and took their Leos.

The reason why still wasn’t completely clear.

It obviously wasn’t good, but just how bad exactly was yet to be seen.

They would have to try to get the answers for themselves.

There was an attempt to bring their Leos back using the staff but whatever they tried didn’t work.

Something or someone was blocking them.

It left only one option, getting to their Leos themselves.

The Daimyo suggested a plan for him to send them all to where their brothers were but keep the staff in this universe so it would not fall into villainous hands.

Once they handled whatever was stopping the war staff from sending them back, it would bring them back.

The 2003 Splinter insisted on going with them at first. The Daimyo urged him to stay so he could be sent as backup in case anything went wrong.

That’s how all the turtles ended up right in front of Big Mama in her recently reconstructed office.

While the 2018 turtles were both shocked and enraged, she didn’t seem surprised to see them in the slightest.

A trapped door underneath them opened up and sent them falling into darkness.

There was a good amount of screaming until Raph created a projection and scooped them together.

They collectively had landed on something metal, sliding them fast further into the darkness.

Eventually there was light at the end of the tunnel. They got shot out into the brightness of the day and Big Mama’s arena.

Raph set everyone else down and plopped down besides them after he stopped his projection.

That’s how they ended up in the present situation.

Big Mama’s voice started booming over the speakers in the arena.

“Tut tut tut turtly boos, don’t you know it’s rather rude to drippy drop in unannounced?”

“Was that even English? You guys understanding any of that?” 03 Raph glances around.

“She’s mad we surprised her, dude.” 12 Mikey answers.

03 Raph raises an eyebrow.

“I’m fluent in crazy.” 12 Mikey brags.

“We’re here because you have our brothers! Hand ‘em over or I’ll shove my sai up your-!”

“No no, none of that ruffian riff raff language is allowed!” Big Mama interrupts 12 Raph.

“Fuck. You. Give Leo back!“ 18 Raph growls out loudly.

The 2003 and 2012 turtles stare at him in shock. None of them had actually ever been allowed to swear.

“Raph, you used our only f-bomb! We can’t go above a pg-13 rating!” 18 Donnie complains.

“Sorry Dee, I’ll let ya have it next time.”

“You will not! You bimbling buffoons ruined everything already and that sent me into quite a tizzy wiz. I was lucky enough that a splendiferous offer was thrown my way. I help with a little tournament in my Battle Nexus and not only will you be done away with, but I’ll get three universes worth of money and power!” Big Mama laughs gaudily.

“Yeah right lady, you wish this was as good as the real Battle Nexus!” 03 Raph shouts.

Big Mama looks ready for blood at this point.

“You want your brothers so badly? Here! Take them!”

Three entrances open up at the other end of the arena.

All the Leos walk out and towards their brothers.

03 Leo moved like his legs were being forced to work. However, there was a blind fury in the way he snarled and bared his teeth.

It was incredibly disturbing for the rest of the 03 turtles who knew how much he must be fighting against this.

12 Leo took each step with purpose, almost as if he knew exactly what he was doing and just how important it was to do it.

As his family watched this, their blood ran cold. If they didn’t see the red eyes they might have thought he was in full control of himself.

18 Leo walked robotically. There was no style or discernible uniqueness to it in the slightest.

It broke his brothers’ hearts. They knew he would hate the lack of flare and dramatics.

There were no words, no monologues, just each Leo starting their attacks.

03 Leo went after 18 Raph first.

Raph quickly defended himself with his projection and used his clones as a distraction.

03 sliced through them with ferocity.

“Why is he attacking me!?” 18 Raph questions.

“He probably thinks you can take him! Leo, bro, snap out of it already!” 03 Raph grabs at his brother.

03 Leo split kicks both Raphs away.

12 Leo readies both his swords as he runs at 03 Donnie and Mikey.

“Woah dude, stop! That demon in your head is lying to you! You’ll just get all old and turn into dust!” 03 Mikey warns.

“I don’t care what happens to me as long as I get what I want. I saw what I could have! I know it can be that way!” 12 Leo attacks them.

03 Mikey blocks his attacks.

“The ones called the turtles will now be called the ones who are eliminated.” 18 Leo says flatly.

“This one will be a piece of cake.” 12 Raph raises his sais.

“No! Watch out!” 18 Donnie shouts.

18 Leo tosses one of his weapons near 12 Raph which he easily dodges.

“Ha! He missed!”

“He doesn’t miss!”

The sword 18 Leo tossed is replaced with himself.

12 Raph had no hope in reacting in time. He barely notices an orange blur before he’s suddenly out of harm’s way.

He’s absolutely gobsmacked both of the fact that he was over 18 Mikey’s shoulder and that he could even move that fast.

“How did you do that!?”

“It runs in the family! Super quick!”

“This isn’t working! Everyone! How did you defeat this type of thing in your universes!?” 03 Donnie questions.

“Nardo got through to Raph so he could fight the Krang’s influence himself.” 18 Donnie answers.

“We usually just break those devices!” 12 Donnie advises.

“Our Leo just wouldn’t accept the deal!” 03 Mikey adds.

“Alright, nobody knows our Leos better than we do! Everyone take on their own!” 18 Raph instructs.

It was surprising for most of them to hear a Raph in charge and giving good orders, but they followed them quickly.

03 Leo recoiled slightly at his brothers coming closer.

“Leo, it’s going to be okay. You all saved me when I became a monster, now it’s my turn to help. You have to fight this! You can fight it!” 03 Donnie encourages.

03 Mikey puts away his nunchucks.

“Listen bro, I said it when you were sick, and I’ll say it again. You’re even more annoying than me when you get your mind set on something! And that’s saying something! You can totally fight that weird alien thing!”

03 Leo hisses and growls, thrashing around. It’s clear that he’s trying and failing to get a hold of himself.

03 Raph starts stomping over to him.

“Alright, enough is enough! You’ve been trying to protect us this whole time and I’m sick of it. We’re a team, you’re going to get help if you like or not ya knuckle head!”

03 Leo roars out before grabbing at his arm, his roars fading into his own screams as he begins tearing the krang part off.

“Leo!”

“I….will not….let you…hurt them…!” He screams louder as he fully removes it and squishes it in his hand.

“I knew you could do it, bro!” 03 Mikey cheers.

03 Leo begins to sway, falling into 03 Raph’s outstretched arms.

“We’ve got ya, fearless leader. Take a rest already.”

12 Leo began his assault with attacking 12 Donnie.

“Why am I always the first!?”

“Not cool Leo, not cool!” 12 Mikey comes at him with his nunchucks to help Donnie out.

12 Leo ducks and picks up dirt to throw in his eyes.

12 Mikey instinctively puts his hands to his eyes in pain.

12 Leo kicks his plastron while he has the chance.

12 Raph gets behind him and holds his arms back.

“What are you doing!? Why would you ever make a deal with a demon!?”

“Why should I bother telling you? When have you ever tried to listen to me?” He hits his head back into Raph’s face.

12 Raph stumbles back, barely able to get himself together again in time to use his sai to catch Leo’s sword.

“I get it, I don’t always agree with you! But those guys told me earlier that demon that’s messing with your head only goes after people who are greedy! What are you trying to get!? Money!? Power!? You’re the guy who wouldn’t steal a sword from a rich jerk!”

“I want to be selfish for once! I want to have it all! We could have it all! I knew you wouldn’t listen to me unless I made you listen! If you serve the demon with me, we can all be happy.”

“What are you talking about!?”

“It promised to lessen my burden so that it wasn’t so heavy to carry. It promised that I could make decisions without having to worry if it got any of you hurt. It promised that I wouldn’t have to sacrifice anything anymore! Not my childhood, not my time, not my life!”

Raph stares at him with wide eyes.

“Leo-“

“No! No more saying anything! No more snark! No more calling me lame! Do you think I want to only be known as boring and responsible!? I want to be cool! I want to be a leader you guys want! I try to make things fun! I just….try! I try and try and try my best until I’m just sick of it! But I’m not allowed to me sick of it or else sensei is disappointed! Mad! Anything but proud! So I’m getting what I want, and you’re all finally going to listen!”

Raph’s eyes only get wider. He glances behind Leo at Mikey and Donnie.

They share similar expressions and Raph knows they’re all on the same page of what must be done.

He shoves Leo back.

Leo tries to charge forward, but Mikey uses his nunchucks to wrap his chain around his left arm.

Donnie disarms his other arm with his bō.

Raph moves forward and grabs Leo tightly in a hug.

Mikey and Donnie join in.

“We didn’t know you were taking our jokes so hard. I alway rip on everybody. It wasn’t about you, but….I’m sorry. I’m sorry it hurt you. I thought it was easy being Splinter’s favorite. I was wrong, okay? You don’t have to go making deals with demons.” Raph apologizes.

“I always said it wasn’t fun being the responsible one. We mess around because we want you to take a break! We want you to have fun too, promise.” Mikey hugs him tighter.

“You can talk to us. We’re here, Leo.” Donnie insists.

Leo’s eyes slowly go back to normal and he hugs his brothers back tightly.

“Thank you.”

The 2018 brothers were having a slightly intense battle

18 Leo didn’t seem to have a limit anymore. He just kept portaling, running, dodging, jumping, slicing, anything and everything to avoid his brothers grabbing him.

Raph, Donnie and Mikey were breathing heavily as they attempted to think of a new strategy.

“Nothing we know about him is working! I can’t razz any tazz!” Mikey whimpers.

“That’s it, we’re tryna fight Leo, but that’s not Leo. They’re forcing him to be their way. It’s not just how he talks but how he moves too. We gotta grab him like he’s a robot!” Raph realizes.

“Robot….if he’s being controlled by tech, then I can hack that tech! It has to have a signal going to and coming from somewhere. I just need time.” Donnie looks at both of them.

“Now that I can do! Distraction time, baby!” Mikey jumps up and rushes towards Leo.

They do a back and forth with their movements. Mikey uses his chains and midair acrobatics to keep Leo’s attention and actions aimed at him.

Raph uses his clones when Leo gets too close to Mikey and to make sure he doesn’t have time or room to make portals.

Donnie furiously tapped away at his wrist screen and several other screens he created with his ninpo. It wasn’t the easiest thing in the world to try to hack something you’ve never seen before.

However, when it came to his brothers, he’d reconstruct science itself if he had to.

It started to get more serious as Leo began hurting himself from how he was moving.

Or rather, being moved.

The pressure forced Donnie to work even harder. Just when it seemed Leo was about to land a massive blow, he stopped.

Raph took this moment to punch the device on Leo’s neck. It drops uselessly to the ground.

Leo smiles in exhaustion.

“Took you guys long enough.”

Mikey quickly steadies him, smiling tearily.

“Welcome back, Leo.”

“Good to be back Miguel. It killed me to not be able to do any flips when I walked in. I could have said so many cool things.” He laments.

Raph and Donnie get closer to them.

“I agree, I’d give that entrance a 5/10.” Donnie states.

“From now on we’re sitting in the room with you when you read comics!” Raph insists.

“Yeah, fair enough. Right now we need to go kick some spider as-“

“Careful Leo, Raph already used our one f-bomb.” Donnie interrupts.

“What!? I missed that!?”

“Don’t worry, I have it recorded.”

“You’re the best.”

“Hate to interrupt, but I’m pretty sure you want the same thing we do.” 03 Raph walks over.

The 12 turtles join them as well.

“We make her pay for everything.” Donnie grips his bō.

“Let’s do it. On three you guys, one, two, three!” 18 Leo shouts.

“Hot soup!”

“Cowabunga!”

“Booyakasha!”

“We’ll work on that.”

#2018 tmnt #rottmnt #rise of the teenage mutant ninja turtles #rise of the tmnt #fanfiction #rise fanfiction #rottmnt fanfiction #auvember #tmnt 2003 fanfic #tmnt 2018 #tmnt 2003 #tmnt 2012 #tmnt 2012 fanfic #tmnt michelangelo #tmnt raphael #tmnt leonardo #tmnt donatello #tmnt crossover #crossover

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