These New York Heroes Don't Know What To Do With Themselves.My Silly Pattern Seeking Monkey Brain Noticed

These New York heroes don't know what to do with themselves. My silly pattern seeking monkey brain noticed that my favorite media keepings using New York City and Feudal Era Japan as settings for their stories. Now I have to stop myself from too many crossovers, god help me.

✨ONE WEEK left✨ I'm not gonna be the same after this. I made this just BECAUSE. This is not to be considered as Official artwork. This is simply fanart of the art already posted by the author. Remember that from my point of view, this is just FANART of the promo art already posted. For me, this is just SPECULATION. I envy the people who already got their copies. I'm just hoping Amazon takes pity on us and helps us with a much more reasonable delivery date. There is one more piece that I'm planning to release Friday or Sunday. -please avoid getting into Spoiler territory down in the comments.

*sticks one arm out from under my rock, slips this into the tag, and retreats back under my rock* Inspired by the cass apocalyptic series by somerandomdudelmao It's a very very cool rottmnt fancomic and you should give it a read 👉👈🥺 (Not canon but you might recognize some parts/dialogue from the comic) [warning for implied/referenced past infant death but no actual infant death (the boy is fine dw), infected wounds, amputation, and a dog like creature biting someone]

The first time Casey Jr almost dies he's about three months old, by their best guess, and he's only been Casey Jr for a week.

Cassandra and Raph go out on a supply run, which is normal. They come back with a baby in a box, which is not.

Fortunately or unfortunately, there's no such thing as government or paperwork in the apocalypse. So there's nothing stopping Cassandra from saying “I found him in an alley so he's my son now, his name is Cassandra Jr.” And that's that.

Thankfully, this isn't the resistance's first baby so there's plenty of formula and hand me downs to supply Cassandra in her sudden status as a Mom. And everything else the family quickly supplies.

Donnie is very uninterested in babysitting the oozy crotch goblin but Casey Jr's crib still has the genius built logo and built in laser security system to prove he cares in his own way.

Mikey breaks into his carefully rationed paint supply to paint a small mural above the crib and takes every chance to babysit he can.

And Raph? Well Raph dives headfirst into the roll of co-parent slash halway blockade.

Then there's Leo.

In his own words, he has a whole resistance to babysit. And besides that there’s not much he can really do other than what he’s already doing.

Fight the krang, stop the war, give little Casey Jr a better world to grow up in. And also avoid everyone’s efforts to get him to hold the baby.

He is not cut out for tasks that require a delicate touch but it seems like he’s the only one who understands that. He’s a gigantic mutant ninja turtle who, unlike his brothers, has never had any kind of hobby that requires any kind of delicacy. So he hangs back, he keeps an eye out for things that will be useful to the Caseys while he’s out on the surface, and he waves away attempts to hand Jr to him.

And then Casey Jr gets sick.

It should be fine. Should be normal. Babies are delicate little things, getting sick is a thing they do. Except there’s not much the way of medicine in the apocalypse. And babies are delicate.

It starts as a low grade fever. By the end of the day it’s a raging bonfire. They have a lot of things but medicine is in short supply. Nothing they have is working. It’s just Casey Jr, sobbing his heart out on Raph’s shoulder while Cassandra hovers and Raph tries to soothe all three of them.

There’s nothing Leo can do to help. They don’t have the medicine they need to treat the fever. At least not something safe to use on a baby. Raph is the one who remembers how Dad used to use lukewarm baths to break their fevers when they were little and he was still too scared to try human medicine on them. It helps enough that they can get some formula into the kid. But it’s not fixing things.

Two days pass and the fever refuses to break. The baths are becoming less and less helpful. After the third refused feeding attempt that afternoon Donnie slams down a map of ‘areas most likely to contain useful information or materials for treating a sick baby.’

Leo and Mikey gear up and head out leaving Donnie to monitor things back at base while April takes charge of running everything else so that Raph is free to help Cassandra take care of Jr.

It’s bad luck, really, that a pack of krang dogs find their camp on the first night. It should be fine. They should be able to handle it.

But bad luck is bad luck.

Leo sees movement out of the corner of his eye. He moves to dodge and the ground underneath him decides now is a perfect time to give way.

“LEO!” Mikey yells as Leo tumbles away into the dark.

Leo grunts, biting back a scream as the Krang dog’s teeth sink into his arm. They tumble into the dark together, bouncing down the stacks of rubble. It’s dead by the time he lands but the damage is done.  

The good news is that the fall kept the dog from getting a good grip on him.  

The bad news is that even if the bite won’t infect him with Krang regular infections are different story. Krang zombies have foul mouths.

Mikey can’t find out it managed to bite Leo. If he does he’ll want to go back and get Leo treatment before they look for the medicine.

And right now every second could mean the difference between getting medicine to Casey Jr in time or adding to their graveyard.

So Leo makes sure that by the time Mikey makes it down to him his first aid kit is a good bit lighter and any sign of the bite is hidden beneath his normal arm wraps.

When Mikey finds him Leo smiles and doesn’t hesitate to wrap both arms around his little brother.

“Are you okay- did it bite you?” Mikey asks, darting around him to hunt down every last scrape.

“Nah, just a couple of scratches,” Leo lies. “Let me heal them-” “No, we’ve got a ways to go, I won't risk you wearing yourself out too soon.” “Leo!” “I already used my first aid supplies on them! It’d be a waste if you healed me now!” Mikey glares at him but huffs and nods. “Fine! But if they start to feel bad-” “I’ll tell you, don’t worry,” Leo lies again.

Day two is a bust. There's useful supplies in the area Donnie marked out for them to search, sure, but nothing that will help  Casey Jr. Or the sensation of a burn throbbing its way up Leo's hidden bite wound.

Leo and Mikey mark out where the useful things are and keep going. Someone can go back for them when they're less pressed for time.

That night Leo waits for Mikey to fall asleep before he checks the bite. It's bad.

The moment the bandages come off he's gagging at the putrid stink of infection. It's hard to see it in the dark but then again he's not sure he really wants a better look. It wouldn't change his mind anyway.

He can make out the dark veins of infection spreading. If he wasn't green it'd certainly be a violent red.

He cleans it, spreads a thin layer of disinfectant cream that will do about as much good as throwing a cup of water at a bonfire, and re-bandages it.

His usual arm wraps go up over top of it, hopefully Mikey won't notice he's done them a bit higher than normal.

All the evidence goes into the fire. By the time Mikey's turn to take watch comes all that's left is ash.

On day three Leo wakes up feeling like someone dropped a building on him. He makes the mistake of groaning about it.

“Leo? Are you okay?” Mikey asks. “Yeah, yeah I’m fine. I just, uh, I think I’m inheriting Dad’s back problems! That or the Krang made the ground harder.” Mikey snickers. “I mean, they would, but I’m also pretty sure you just called yourself old.” “I did not!” Leo drags himself upright and makes a show of cracking his back. It obliges with a satisfyingly loud pop that makes Mikey giggle harder. “I think your spine disagrees with you too.” “Shut up!” “Awwww are you feeling cranky, old man?” 

Leo is too exhausted to feel properly offended or even think of forming a comeback but he plays it up for his little brother anyway.

Anything to keep him from worrying. Or forcing them to turn back. It’s fine. This shouldn’t take too much longer anyway.

It’s midday by the time they reach the second site. Just from a glance it’s obvious this is a more promising site. There are actual chunks of buildings scattered around and there’s enough of a shattered sign left lying around to tell them that whatever kind of care this place used to give it was geared specifically towards children.

There’s plenty to find digging through the rubble. Well. Plenty for Mikey to find. Leo is mostly trying not to let on how dizzy he is.

To both of their frustration, they run out of daylight before they find anything. Leo can feel his body screaming at him to lay down and rest. Just a little longer, he tells his body. They’re going to find the medicine. He can feel it. Leo just needs to make it at least that long.

The fourth day dawns. Mikey shakes him awake as soon as there’s enough light ot see by. Leo bites back a moan as he claws his way upright. Leo thought his arm hurt before but now it feels like someone is pouring lava down it.

He notes with a calmness that boarders on absurdity that he can’t feel his fingers.

Something must show on his face- or maybe he just looks at least halfway as awful as he feels- because Mikey frowns at him when he wakes up.

“I’m worried,” Leo blurts out. “If this takes much longer then- I don’t think- he’s already been sick for so long.” “We’ll find it. Today, I’m sure. I’ve got a good feeling.” Leo tries to smile for him and hopes the shaky thing he offers up is enough. Well. At least one of them is feeling good.

Leo is lucky. He’s always been lucky. Luck runs out eventually, it always does. But not today. Maybe it helps that Leo isn’t hoping for something for nothing. Because on day four they strike gold.

Mikey is a short bit away, digging through the rubble with his power, hunting for anything with even the chance of helping. Leo is doubled over just out of his site, trying to stifle his stomach’s efforts to rebel against him.

Don’t hurl, he tells himself, if you hurl there’s no way Mikey won’t realize something is wrong.

He forces his eyes open, hoping that focusing on something will help. And then Leo’s eyes fall on a shattered glass cabinet, several packs of some something promisingly adorned in cartoon human children. He reaches in, flips it, and feels a wash of relief when he realizes it’s exactly what they’re looking for.

“Mikey- Mikey look-” everything fuzzes, tumbles. There’s something under him. He blinks back blurs of color, tries to resolve them into something coherent. Mikey’s face hovers over him, mouth moving. He looks upset. “What's the matter?” he tries to ask. “Leo! Leo, are you sick? What hurts?” “Arm,” Leo answers without thinking.

Oh shit. Oh shit he’s not supposed to let Mikey know. But it’s a little late for that. At least the panic clears his head a little. Mikey makes a wounded sound in the back of his throat as he uncovers the bite.

“Leo.” “Yeah, I know. Sorry… sorry for lying.” He watches Mikey’s lip wobble until Mikey catches it in his teeth. “Leo this is bad! We- I don’t know if we have the supplies to treat this!” Leo hums. Now that the panic is fading it’s getting so much harder to think. He lifts his good hand before he can forget and flops it over towards Mikey. “S’okay. We can go back now.” Mikey takes the box of medicine with shaky fingers. “Leo,” he croaks.

Mikey is talking. Something… probably important? He looks scared but they’re not under attack. He’s pretty sure they’re not. Leo tries to focus on him anyway but it’s so hard. He’s so tired.

He’s been tired but there was no resting, not properly, not until they got what they needed. They do now so it’s fine, he can rest his eyes a bit.

Good. Seeing is hard too. Just blurs and colors.

He feels Mikey’s hand on his face, his voice in his ears. He tries to pay attention but he’s slipping, sliding away.

“Sorry,” he mumbles, but he’s out before he can think of what, specifically, he’s sorry for.

Leo doesn’t remember the trip back, just the thud of Mikey landing. Someone screaming. A hand squeezing his. Small. Thin fingers. Lots of them.

“April?” he might mumble. He thinks. “Shhh, rest big guy,” Probably-April says. “Donnie has it. He’s gonna fix it.” Oh. That’s good. He lets himself sink, lets her hold him together while he waits for Donnie to do what Donnie does best.

A light in his face. “Am I dying?” he says. Thinks? Someone hisses. Angry sound. Who does that again? “Not if I have anything to say about it. And I have a lot to say about it.” Oh. Donnie is here. That’s good. Didn’t someone say he was coming? “Now go to sleep, you don’t want to be awake for this part.” Leo doesn’t get a chance to answer, he’s already sinking again.

Leo blinks up at the ceiling of Donnie’s lab. He spends a good while just staring at it, trying to get his brain to work. His arm throbs. “Ow.”

Some several things crash and shatter and then Donnie''s face hovers into view. “How do you feel- nauseous? any pain, aches, fever? Chills?” “Uh, my arm hurts a little?”

“Which one? The one that got bit by one of the most disease ridden things in the apocalypse and then went four days without medical care or the other one?” “Hey I did some medical care!” “You did FIRST AID. You know, the thing you do to help someone before you get them ACTUAL MEDICAL CARE.”

Leo winces. There’s no arguing about that one. “Ok well, I was hoping we’d find the medicine and get back before it got too bad.” “Well. You didn’t.” “Yeah, I guess. How long was I out?” he asks. He tries to lift his arm but he can’t feel it move. He frowns. “It… barely hurts anymore. Uh. Donnie? I can’t- Um. Donnie. I can’t feel my arm.”

Donnie’s face twitches. Leo tries to turn his head to look at his arm. Donnie’s hand darts out out to stop him. Leo looks at Donnie again. Donnie looks away, grimacing and refusing to make eye contact.

“Donnie-” “Don’t look yet.” Leo tries to move his arm again but there’s still no response. No it’s not just that there isn’t a response. He can't even feel the weight of it.

He can feel his shoulder. He can feel a ring of throbbing pain a few inches above his elbow. And then it’s just… light? Like there’s nothing but air- oh. Oh. Okay then. There’s where his luck ran out. “...Huh. That’s. Hm. Let me see?” “Leo-” “Donnie. Let me see.” Reluctantly, Donnie eases back.

For a second Leo doesn’t do anything. He closes his eyes and breathes. He turns his head. He opens his eyes.

It’s gone.

Everything past his first crescent marking is gone.

He closes his eyes and takes a deep, measured, breath. Okay, he thinks. Okay. He’s a medic. He knew this was a possibility.  Donnie starts eyeing him nervously.

“Did he make it?” Leo asks at last. “...Yeah he made it,” Donnie says quietly. Leo feels like he's fully breathing out for the first time since Cassandra burst into the infirmary with a sick baby in her arms. "Good. That's good." Donnie puts his hand over the end of Leo's nub, covering the scar. He stares at the floor and says nothing. Silence reigns. Leo stares up at the ceiling, letting it settle around them.

Until the door slams open and the rest of his family tumble through the door, both Caseys included.

The last knot of tension loosens from him at the sight of Casey Jr, happily wiggling in his mom’s arms as he flails his arms at Raph.

He tears his eyes away as his family gathers around him, worried and loud, and Leo only knows one way to calm them down.

“So. I’m guessing I'm the opposite of... All Right now, huh?” Cassandra covers Casey Jr's ears. Donnie leans away, inhaling sharply. “Why are you like this?“ he asks. “Because it's all I've got... Left” Raph groans, hiding his face in his hands. “Already?” “Put him back under,” April says, deadpan. “Boooo,” Mikey says, and Leo pretends he doesn’t sound two steps away from tears.   “I hate you so much,” Donnie lies, a few screens manifesting around him. He taps away with the hand that isn't still covering the scar on what remains of Leo's arm while Leo laughs at his own terrible jokes.

“You no longer have a choice about getting a prosthetic. Mikey tried to say I had to ask before implanting experimental technology in your body but you know what? I’m making an executive decision. I can’t live with the puns.”

Leo starts laughing harder, so hard that it circles right back around to sobbing. He’s buried in a pile before the first sob can even fully leave him. Donnie’s eyes stay on the screen even as he shifts his hand to Leo’s shoulder and squeezes. “I’ll fix it. Don’t worry.”

Leo spends a lot of time sleeping but he’s never alone when he wakes up.

There’s Raph, showing off the balls he’s threading onto his mask tails so Casey Jr can climb them while Cassandra sits nearby, once more restitching her perpetually tearing sleeves on her shirts.

He wakes to Mikey making little fish or birds dance in the air while Casey Jr sits in his lap and reaches for them.

Or there’s April pouring over battle plans with a mug in one hand and the other wrapped around Casey Jr.

Point is there’s a lot of Casey Jr. So Leo really should be prepared to wake up with a tiny weight on his chest, healthy and safe and sound. And still so very tiny. His breath hitches, he doesn’t dare move.

“Bemused scoff.”

Leo carefully turns his head toward where Donnie is busily typing away at something.

“You know you can’t avoid holding him forever. Even I've held him." Leo gives Donnie the flattest look he can manage. Sure. Donnie has held Casey Jr. Once in a blue moon when there was literally no one else to do it (and Leo's hands were firmly tucked under his arms.) For about sixty seconds total. "...I've held him more than you have.”

Leo grimaces. “Look, I wasn’t cut out for holding delicate stuff when I had two arms. It’s an even worse idea now that I’m twice as likely to drop him.”

“Invalid excuse. I’m already working on a solution to your arm situation.” Donnie waves his hands and his ninpo sparks, building a blue print of an arm and some other thing hovering in the air between them.

“These are the schematics for a bio-mechanical arm and a socket implant to allow it to safely interface with your nero-” Leo’s brain glazes over the rest of Donnie’s explanation.

“...So you want to turn me into a kick ass cyborg?” he asks as soon as Donnie is done. “Did you listen to none of what I just said?” “C’mon, Don, I’ve got you for all the nerd stuff.” “Exasperated sigh, yes I’m turning you into a kick ass cyborg.” “Sweet,” Leo says, yawning. Donnie huffs. “Go back to sleep, Nardo.” “Can’t, baby could fall,” Leo mumbles. “I won’t let him fall. Just rest.” And Leo trusts his brother. So he does.

It takes a frustratingly long time for Leo to recover enough for the surgery to implant the port for the arm in his stump. It’s more low profile than he expected, hardly noticeable at all unless you’re looking head on at it.

Then there’s a whole other saga of learning how to use the arm Donnie has built him. It’s clunkier than Donnie’s preferred standards but it works almost as seamless as his real one. He gets good with it and he gets good with it fast because with the Krang you either do it fast or you don’t do it all.

The unintended and unwanted side effect of this is that now his family are no longer accepting “I’m not good enough with my arm I might drop him” as a valid excuse to not hold Casey Jr.

And they are very, very, intent on getting him to hold Casey Jr.

Look. Leo is thanking sweet pizza supreme in the sky and every one of the Hamato ancestors, Casey Jr bounces back from being sick like it never happened.

He bounces and wiggles, he babbles and giggles, as though less than a week or so ago he wasn’t so sick that Leo and his family (literally) risked life and limb to get him medicine. And Leo is thrilled. Really.

It’s just that he wishes his family would stop encouraging Casey Jr’s newest favorite game- trying to grab Leo. Because apparently one of any baby’s favorite thing is whatever they can’t have.

“Here! Hold him!” Mikey holds Casey out so that he faces Leo. Casey Jr, who seems to have a sixth sense for when someone is playing the 'try to get Casey close enough to touch Leo' game,  is thrilled. His tiny arms wave at Leo, itty-bitty fingers clenching like they’re ready to latch on the second they’re close enough to touch him.

“W-wait, I can’t!” Leo protests for the thousandth time. But Mikey isn’t taking no for an answer this time. A nudge of mystic power keeps Leo from fleeing. All Leo can do is tuck his dangerous un-baby proofed metal arm away from tender baby skin and wave his flesh hand pleadingly.

“C’mon Leo… you have to hold him eventually.”  Mikey cajoles, gently waggling Casey Jr.

“Not happening, no way.” Leo leans back as far as Mikey’s powers will let him.

“Yes way,” Mikey says, holding Casey closer and closer. Casey is giggling furiously, tiny arms flying at top speed.

“Do you even see how tiny he is?” Leo points at the baby, just in case Mikey needs a reminder. “I could break him with one finger!” There’s a tiny nudge to said finger. Leo looks down. Casey Jr is copying him, nudging Leo’s much larger finger with his own.

Mikey gets a look on his face. A terrible, evil, look.

“One finger? Like thiiiiis one?” Mikey grins as he lifts his middle fingers away from Casey Jr’s body. Leo freezes. “Mikey. Mikey no.”

“Whats that? Oh nooooo.... I can’t hear you over the sound of my grip slipping!” Mikey sing-songs. “Don’t you dare!” Leo stares at him, horrified and frozen. He won’t. Surely he won’t. Cassandra would murder him. Raph would double murder him. He wouldn't. Right? Right??? “Oh no! I hope someone catches the poor delicate baby!” And then Mikey drops Casey Jr.

Leo shrieks. He forgets that Mikey is literally magic and does not need his hands to hold a building, much less a baby.

“Mikey what the fuck!” Leo squawks, hands flying forward and closing around the tiny delicate bundle that is- … not falling towards the ground at all actually.

The gears turn, the realization that he's been tricked sets in. Leo glares at Mikey. Mikey grins, unrepentant, and waves his faintly glowing hands, a glow also present around a perfectly safe Casey Jr. The glow vanishes and Leo feels the surprisingly greater weight of the baby properly in his hands for the first time.

“Ahhhh Mikey- Mikey take him back!” Mikey stubbornly keeps his hands in the air and backs away, still grinning. “You’re fine, you’ve got this.” “I don’t have this!” in spite of saying this Leo is already tucking Casey closer to him. “It’s fiiinnne, you're doing fine! Look, he’s having a great time!”

Tiny clumsy fingers hit his jaw, drawing his eyes down. Casey Jr has one hand buried in Leo’s scarf. The other is pressed to the highest part of Leo’s face it can reach. As he looks down they stretch up, reaching for the vibrant red markings on his face.

“Ah- what- what does he want?” “Awww he likes your stripes, hold him higher!”

Hesitantly, Leo shifts the baby a little higher in his arms and Casey’s little fingers smack against his markings, clenching against them as best the pudgy little things can. Leo chuckles. “What? You want those? Hate to break it to you bud but they’re kind of attached to me.” Big dark eyes lock onto his. Casey Jr babbles. His little fingers flex against Leo’s face again.

Someone makes a noise like a slowly deflating balloon. Leo looks up to find Raph has found them. He’s standing in the doorway, his eyes shining with unshed tears.

“Please tell me Donnie has a good angle on this,” he says, voice wobbling. Raph’s com clicks on and switches itself to speaker mode. “Sending you the best shots as I speak,” says Donnie’s voice. “I hate all of you,” Leo lies. Mikey snickers at him, Raph is too busy cooing to reply. And then Casey Jr realizes Raph is there and decides he’s done being held by Leo. He leans his entire body toward Raph and puts all of his tiny baby might into wiggling free of Leo's grip.

“Oh fuck-” “Don’t cuss in front of the baby!” “Raph. Raph.” “You’re doing fine, relax-”  “He’s gonna fall! I’m gonna drop him- Raph!” Raph easily scoops Casey Jr up, saving Leo from the terrifying force of a wiggly baby.

Casey Jr giggles and grabs for Raph’s mask tails while Leo dramatically flops to the floor. Mikey continues to snicker at Leo’s expense, floating over to pat his head.

“I can’t believe you pretended to drop him just to trick me into holding him,” Leo groans. “You what?” Raph’s head snaps over to them. Mikey freezes. “I had mystic hands on him the whole time!” “Baby holding is a two hand activity!” “You literally hold him with one hand!” “Raph’s hand is big enough to count as two!” “Oh that is so not fair!” “... Leo watch the little man for a minute.” Raph sets Casey Jr down by Leo’s head. Leo makes an inarticulate sound of horror but before he can protest Raph is already bolting for Mikey.

Mikey flees with a yelp.    Leo looks at Casey Jr. Casey Jr looks at him. “So, you come here often?” Casey Jr stuffs his fist in his mouth and makes a garbled noise around it, almost recognizable as a very turtle like chirp. Leo checks that his brothers are out of ear shot and then chirps back. Casey Jr’s eyes widen and sparkle. He takes his damp hand out of his mouth and smacks Leo in the face with it. Leo grimaces. “Thanks.” In the distance, Mikey screams as Raph catches him but it's just as quickly followed by laughter.

Casey Junior grows up in between loss and stolen joy and forgotten childhood memories. He gets old enough to ask questions. Inevitably, the day comes when he asks “Sensei, how did you lose your arm?”

And Leo lies.

Or, well… He doesn’t lie so much as he just… leaves out some details. Details Casey Jr does not and will not ever know if Leo gets his way.

“Ah, you know… Krang dog got a lucky bite in. By the time I got back to base it was the arm or me and Donnie chose me.” He says it with a light little shrug, like it’s no big deal.  

Because for Leo, it’s not a big deal. Between losing an arm and losing family he’d chose the arm over and over again.

My cover for Rottmnt x atla crossover A Tale of Spirits by unorthodoxxx

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Rottmnt or rottmnt ocs (make sure you have references)

Only sfw (angst, romance and minor blood/injuries are fine)

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