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onepieceoftheoceanblues · 2 days

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Batfam X One Piece Crossover AU

Someone mentioned this sort of au and I went Insane a bit ^-^' hope you guys enjoy!

Okay so a Batfam in the One Piece world au and how I think it would work/go;

I imagine the Batfam were whammied into an entirely new dimension while on patrol so we have the full costumed roster (but not the full extended clan cuz that's so many people lol) so we have Bruce/Batman, Dick/Nightwing, Jason/Red Hood, Tim/Red Robbin, Damian/Robin, Cass/Black Bat, Stephanie/Batgirl (you can pry Steph still being batgirl out of my cold dead hands), and Duke/Signal.

The First thing they do is figure out where they are, an island in something called the ___ blue (idk which they should be in lol, but it's best if they start in a blue I think), and are very obviously not in their world. (I'm gonna say for the sake of Plot either One Piece doesn't exist in their world or none of them have watched/read it because that would be too easy lol)

Ofc the second thing they do is try to find a way home and gather info but uh, they quickly realize this world doesn't have the best tech around to build something to take them home, and places/people they can get to would be either hard to find or in a place that's very dangerous to get to (Vegapunk is their best bet but... not really an option for right away due to mentioned reasons).

They think of asking this "World Government" for help for all of two seconds, before finding out how fucking awful and corrupt the whole system this world has and nixes that idea right in the bud. They're Vigilantes for a reason, after all, and know corruption in governments very well. So honestly, their best bet is either trying to go along and find someone that can help and materials, or waiting for their people from their world to come and get them.

(SO much more under cut im sorry Brain went Brrr)

Tbh it must be so wild to be in this world too tho, for some many reasons. It's close enough, but then you factor in all the different races and species, and how the world is set up. Add the fact most of it not as advanced as their world, except in some places which it is? And how half their technology runs on... snails?????? What a baffling world. Also, people can have powers and are gained from something called Devil Fruits which give you powers in exchange that the sea can and will kill you, except for some races have natural powers due to their biology.

They decide pretty quickly in world of water to not eat the Devil Fruits. Also keep an eye on Duke because his powers, while not too flashy, arnt a devil fruit, and they have no way to explain how he has them, and how he can manipulate both light and shadows.

Its probs also so jarring because like, in their world, they are used to being the peak of what humans can do. They keep up with metas and aliens and are cosidered among the best of the best for a reason, and while they often have to compensate with gear and tech, at the end of the day they can only go so far as humans.

However, it's different in this world. Clearly even though there are humans, their biological standards are different then their Earth, and even just humans without powers can go far beyond their own norm if they train and work hard enough for it.

The Batfam could easily handle the Blue's pirates and marines, and probs all cannon fodder marines, and while I think they could deal with a good chunk if not most people in Paradise baring the strongest in the first half of the grand line, there's no way they could deal with the New World even with their best gear and in peak condition for them. Which sucks because their best bets are likely in that Sea.

Idk where I'd see them, my heart wants them to be pirates of their own little run pirate crew, but I could easily see them being picked up by a canon crew or turning Revolutionaries in exchange for getting help find a way home, or pirates with connections to Revs. The only thing I can't see is them as Marines, as stated a few paragraphs above, lol, but also I figure they run into the law and go fuck you guys and what you stand for and end up with bounties so they are wanted anyways. But either way they are gonna be progressing and trying to find a way home while getting stronger.

I imagine Haki is the first thing they really try to get down after leanring about it. Idk how they managed to find out about it either in the blues or so early in the grand line, but they are expert information gatherers so they do and immediately try to learn it (either tracking someone down who knows it or how to unlock it, or finding adequate documentation in how to do it) and get to work. It's their best chances in getting a leg up in this world.

And they do unlock it! They're pretty much all geniuses, and they already have experience learning weird skills and manipulating their mental will (they can block out telepaths and have strong willpower in general against mind control canonically), so learning to manifest it into Observation and Armament Haki is less about how hard it is and more just if they can (After all they aren't from this world) and how to apply it. Thankfully, it seems they can.

Duke's Observation makes his future vision so much more powerful, so much he actually has adverse effects to it at first before he gets used to it. Observation is great, just helps what they already natrually know but Armament is very much beloved, instant armor that helps you hit harder even against normal people, let alone devil fruit users!! They are big fans.

Conquerors Haki off the table rn because A.) they don't know if they have it and B.) Who or whatever they learned Haki from didn't explain it or have it to explain so that's put to the side for now, but I'm unsure who, if any of them, have it. Maybe Bruce and Jason, and maybe Damian? I feel?? I could also see Dick unlocking his use of it in a fit of protective rage? Im largely Unsure.

I also think it would be neat if the longer they are here, their bodies adapt to this world more and more until they start being able to past their peak of what they could do before and just... keep going. It varies from each batfam member how they feel on their biology changing over time, but they can't do more than just accept it. At least it will help them survive.

Also, they have to adapt in more ways than one. They arrive and their best gear, fully stocked and mostly undamaged, but the longer they are here the more they run out of supplies and things wear down so they have to figure out how to get/make more or alternate for something better. Batarangs thankfully, while having to be made of a different material, can be made from any island with a good blacksmith who's willing to let them use their forges to make them themselves (cuz having to commission them would take money they don't actually have)

Their suits thankfully are fine and reinforced, but over time they're gonna have to likely find a fabric that could replace the stuff their suits are made of or just switch to diffrent outfits inspired by their suits. Dick's Escrima Sticks can't be charged, so they end up not electrified until they find a way to do it later. Jason's guns inevitably run out of ammo then even if he makes his own, they get just damaged so he's forced to switch to the local pirate guns, thankfully not all are just flintlocks.

Damian's sword is apparently very high grade here and is very smug about it, though annoyed other "Swordsmen" keep wanting to know more about his blade and where he learned to use his "weird style". Tim gets a boa staff that has the ends tipped in sea stone.

Their styles also adapt over time. I have this vision of Dick getting his hands on these boots, probs with Dial technology, that let him jump higher and bounce off of walls if he times it right. Jason with Dial guns. They start picking up the 6 powers as well, not all, but Geppo and Soru become very heavily utilized. I think one of them should end up with Voice of all Things, either Cass or Duke, because it's fun lol.

Im... unsure about devilfruits, but I think it would be intrestin to explore if somone ate one, likely out of despration or having little choice. Unsure who or what fruit but just would be neat i think, expecially dealin with the side effects. Tho Dick with a Wind Logia or a winged Zoan of sorts sounds SO interesting. (Can you tell who my favorite batfam memeber is? ^-^')

As for Ponyglaph Runes, Bruce and Tim def find out about it and try their best to tackle it, but It's REALLY hard to learn an entirely different language with unfamiliar sentence structure when you have absolutely no keys or references to work with. They learn of Nico Robin, and aren't stupid so figure it's likely an awful cover-up or more to the story, and decide to lowkey make it one of their goals to track her or any other knowledge on how to learn it down. If they get even a bare hint of a clue on how to translate, I'm sure they'd figure it out over time, but Robin is their best bet.

They find out about Whitebeard, and they are quietly glad Bruce's adoption problem isn't that bad but think its funny. Dick is beloved by all and makes enough friends and allies to rival Luffy's charisma, it's a skill man. I can't decide if their Epithets in this world are just their Vigilante names, and they stay masked, or they get knew Epithets and decide there's no point in hiding, or a mix of both but yee.

The OP world either speaks "Common" they can all magically speak now with some diffrent launages in diff parts of the world, OR Japanese, which some of them know and have to teach the others, OR a weird mix of English and Japanese. There's a point in time that people think Damian is Nico Robin's child or sibling because of the Robin thing, and he's a little demon child. Or hell they still do, and he's very livid while Robin is both amused but also scared for this child who is being tied to her.

They still dont kill for the most part, baring Jason, but some of them are pushed into it and they have to figure out what that means for them and what it means moving fowrard with their no kill policy. Some do better with it, some dont. Bruce still hasnt and wont kill, same with Cass, and Damian decides he doesnt want to but will if absolutly no other choice is offered, thankfully they havnt let him had to make this choice yet. (I just have so much thoughts about a assassin raised child deciding they dont want their hands more red now they have the choice).

One or more of them should end up pulled into the War at Marineford and Ace should be saved because I will try to fit a Ace Lives plot into everything lol

Overall I think if this was a fanfic the plot would be a lot of exploring the differences in their worlds, how they adapt and overcome, and trying to find a way home while also coming to like this world and overturning corruption and fucking over the government. I think them with the Strawhats or another crew would be fun, either as allies or joined idk, but I think with them as their own crew would be cool as well. If they join or ally with a crew Bruce lowkey adopts everyone, and he's given SO much shit for it but christ so many of them have such sad backstories and he wants to help

I think in the end they should get to find their way home and like no time has passed, but they're so changed, and arguably considered powered now because lol, but find a way to go back and visit safely.

Sorry for the word vomit but man im in love with this idea. Feel free to comment or send Asks with questions or comments about the au! Please Reblog, and not just like, as they do nothing <3

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