Did Luxu Possess Brain? - A Kingdom Hearts Theory [The Data Brain Theory]

[@sheldonball1393]

Damo: “data daybreak town” My brain : “day-to-day break town”

[@damo]

I only flubbed that line 800 times while recording it XD

[@CherikoSol]

It doesn't sound that hard to say until you actually say it out loud

[@michaelmurray8134]

@@damo Hey I kind of have a theory that No one may have thought of. What if Luxu did what Xehanort did to Ven and split Brain's Heart. One half went to the future and the other became Luxu's apprentice.

[@OhNoBohNo]

Dayta Break Town

[@Crowens]

EVERY TIME

[@RFDN0]

Honestly this fits. My thoughts had been that the brain we met was the data Brain and Luxu was the real brain because of early scenes in after the first keyblade war which made a point of showing Brain rrad the book of prophesies, him asking the others about their faith in Ava and him declaring himself the Virus early on.

[@darktyrantkingsonicofhell8117]

simple brain was luxa first vessel till fall to darkness and create loxord and then after that face xigbar

[@rhinosama]

What’s the OST playing in the beginning in the background while Damo is talking? Been trying to find it for a minute

[@brunosimao211]

Passing the Power

[@rhinosama]

@@brunosimao211 appreciate it fren :]

[@infernaldisdain8051]

How far can we trust Luxu’s diary as he is the traitor? We know that he has a problem with the Master’s plan.

[@infernaldisdain8051]

Also data objects can be brought into the real world in KH2 so maybe so can Data people without a vessel.

[@TheHaddonfieldRegistry]

I love that you love discussing the lore of KH. This fanbase is probably one of the best online

[@gracekim25]

All I managed to figure out that the one at the end is definitely Brain. Because Brain is the only one who would address Elempher as friend🤔

[@damo]

I believe so as well, but for what it's worth an imposter would know that Brain knows Ephemer

[@gracekim25]

@@damo true😅 I admit the first scene with ‘Brain’ in the graveyard did confuses me

[@teamgalegaming715]

@@damo I think you haven't yet considered that Brain himself has TIME TRAVELED to the era of when Ephemer is known as the FIRST KB Master. And in order for him to arrive, he needs someone who has memories of him and a MEDIUM. Only then, would Brain's "Heart" and "his Heart only" would be able to take physical form. The Medium? His Hat. The Memories? Ephemer.

[@teamgalegaming715]

@@damo how Ephemer got his Hat, Idk.

[@KevinTriforce]

@@damo when the imposter is sus

[@Nedas21]

As someone who was more firmly of the belief that Luxu took Brain's body after sending Brain's heart to the future.... I have to say that you've convinced me haha. The continuous focus on the data backups fits really neatly as a clue into what happened and when combined with the secret report it makes too much sense to ignore. My biggest question now though - if Luxu left the box and his keyblade to the data Brain - is this: What is his "final task"? And yes, personally, I prefer the longer "explainer" portions before the theory so that the relevant info is fresh in my mind. Good analysis dude!

[@gracekim25]

I’ve heard of that theory too🙂

[@TheWinglessHawk]

Oh~ like Schrödingers Cat... a body in a box...

[@papisenpai5994]

the real question is why didnt they just take out data sora as a backup buh dum tss but seriously the theme of putting darkness into a vessel has been a thing in kh and that idea may have come from data brain staying behind encountering darkness. luxus keyblade ends up in scala proving this indefinatley . real brain staying with light while the other is darkness.

[@djfirewolf]

I really like the idea of Data Brain using Brain's real body as a vessel as he would lose it upon time traveling.

[@gracekim25]

Mmm 🤔 definitely interesting

[@kylegilland3673]

I absolutely love and adore this series and with all the lore that’s already established, it sounds complicated to an outside observer but makes perfect sense to a fan. But no matter what, theories, even when they’re absolutely amazing and feel like they could be true, are so much wackier and more confusing than anything else. It’s so frustrating because it means we just have to wait. But I’m gotten off topic. The point is, I like your idea and as far as KH goes I think it makes a lot of sense, and I look forward to your next mystery explained. Oh! I also really like this format, stick with it.

[@seantiago544]

I agree with your theory. I believe the biggest problem for providing proof of the theory is that some details of the main story are left out on purpose. For example, we knew that Ven was the imposter and should not have been there. We also knew that he did not murder Strelitzia because of the person he is. What was left out in the story was that darkness used him and manipulated him to murder Strelitzia and tricked him into thinking he was a dandelion. It was not until then that what I just said was confirmed. I believe this to be true about your theory as well. Dialogue between Brain and Luxu has been left out on purpose. Until that part of the story is revealed, your theory will be proven correct. Maybe more could be added to your theory to make it 100% true. But there is no telling until more story is released. Also, please continue to make videos of heavily explaining the thought. It makes you sound more believable and credible. The next video I would like to see is a complete timeline of Master Xehanort before Dark Road comes out. Also include everything from the secret reports. I know that sounds like a nightmare to take on Ahaha but I'd love to see it.

[@GreenRequiem]

"the left brain, if you will" got me

[@MyChannel287]

I once had a theory of my own. Ask yourself this: "If you knew exactly what was going to happen, and that it was going to happen either way - would you still play along, or would you go against it?" I feel this is the dilemma that Luxu has been experiencing. The Master straight up told him that the Book of Prophecies only exists due to the link between the Gazing Eye of the past, and the Gazing Eye of the future. Luxu has already done exactly what he was supposed to do. Not just because it is written in the book, but because this Luxu followed the instructions of this book. He stood on the very path which it foretold, and eventually became Xigbar, the black goat. Knowing this information, what if Luxu decided to oppose it? He opposed it knowing that the Book was merely bait for Darkness to orientate itself according to the information provided by the book. If the book said "this was going to happen", then Darkness would be there. Using that advantage, this Luxu seemed convinced that this was the Master's true intention for Luxu, to realize the "truth" and stray away to find a new solution - one that might not begin with a keyblade wielder, but a forsaken warrior? One, that had no place in this reality - so this warrior created his own fictional world, a world of reality... or a world of fantasy, in which he was left with a new identity with no place to be? Let's say, at some point (maybe during Dark Road), one of the keyblade wielders meets their demise, but as their heart is destroyed, they lose everything. Their name, their identity, maybe even their keyblade. And yet they still keep the knowledge of this 'new' identity not being their true self, in pursuit of the truth. I think this is who Yozora essentially is - someone who isn't a "nobody", but his heart is no longer recognizable by anyone. They won't know who he used to be. And there might just be one person who lived to witness these events, either in a parallel presence to the black goat, or by following the newfound path to a completely different turn of events. Eventually, they might become Luxord, the white goat. Now you might remember the Master's riddle: "A black goat stashes away a letter, then orders a white goat to search for it." The black goat is in the future, and with that, he is unknowingly able to share his wisdom with the white goat, residing in the past. The black and the white goat originate from the same person. While Xigbar may only remember 'his' past as the black goat, he is completely oblivious to the idea of the white goat being very close to him. And the white goat happens to have the advantage of knowing who the black goat is. Which leaves the question: What's the endgame? I feel like no other member of the Organization stood closer to Sora than Xigbar. While every other member of the original and final organization seemed to have a more simple goal, Xigbar remained the odd one. Xehanort wanted to re-live the events of the Keyblade War, perhaps in order to restore order between light and darkness. Xemnas was in pursuit of understanding the power of a heart. Ansem was the vengeful side of Xehanort, who knew of Ansem The Wise's darker and untold tales. Young Xehanort travelled through time to further collect useful information for himself. Vanitas is (a) darkness. Terra-Xehanort wanted to erase his past, embodied by the Lingering Will, and take control of the guardian which held Terra's heart as a prisoner. Data-Riku, similar to Replika-Riku once, wanted to become the "true" Riku. Isa was both jealous and angry of his friend Lea, with whom he shared a promise - to save a lost heart in Radiant Garden. (Subject X?) Marluxia may have been seeking the power of the keyblade to reunite himself with Strelitzia. Larxene, a friend of Marluxia when they used to co-exist together as keyblade wielders, accompanied him throughout the journey. I left out Xion, because she's replaced by Kairi (who's saved either way). Demyx, because we know jack shit about him. And Luxord, because we know jack shit about him... or do we? I always had this feeling that they all tried to convince Sora of either giving up, or joining their side to help them. Only Xigbar seemed off, not only because he seemed rather distant whenever the Organization was up to its antics, but because he could easily relate to Sora. Xigbar, or Luxu, used to have friends, too. And Luxu used to care about his friends, be it the foretellers or the union leaders. He cared for his friends, and wanted them to be safe. This motivation was his source of power, in a way. His friends, were his power. And even then, it was not enough. So what if Xigbar tried to make or break that very hero out of Sora, sharing his own wisdom with him in a wise-cracker format? And what if Luxord attempted the same with Yozora? What if they were both meant to meet at one point, but their fight ended in a tie? What if they were forced to fight together, until one hero was decided upon? What if Yozora is just another stepstone for Sora's journey? What if this was all in an effort to change the outcome of the very end, in which darkness may have won? I feel like Luxord, now without a keyblade, uses his heart as his guiding key.

[@pnutbteronbwlz9799]

That was so many confusing point so seemingly separated that I couldn’t follow a single over-arching point. You should make a video explaining it or something.

[@Wikloe]

While a lot to digest, there's actually a lot of good stuff here. I especially like the connection between Xigbar and Sora. Xigbar has always been seen as one who is just... kind of there. He never steers Sora any other way. In fact his line of "alright! the hero thinks he's ready now!" ties in perfectly with your statement of what if he was trying to make or break that hero out of Sora. Test him to see if he really is ready to stand up to the coming storm that is headed his way once he inveitably defeats Xehanort.

[@rookiedrifter4273]

So Basically Xigbar and Sora are Obito and Naruto. Aight. I follow that.

[@thegamermaks4316]

"no other member of the Organization stood closer to Sora than Xigbar." Roxas: "Am I a joke to you?!"

[@jaceisms2834]

Interesting thought occurred, what if when Luxu is talking about how, "It's a shame this is the only lifetime you've got," he's referring to Dream Eaters? All of the previous Dandelions had been turned into the Dream Eaters, or reincarnated, but Luxu was stating that wouldn't be the case for Brain, for whatever reason. I don't know, but this was something I've been thinking about.

[@AlmostAnimixers]

Seems like a solid enough theory. They seem to be setting Brain up as a big deal moving forward, so I'm eager to see where the story takes him. Knowing Nomura though, anything we speculate on is only ever going to end up being, at most, a small fraction of whatever insane narrative his genius mind has comprehended.

[@TronSAHeroXYZ]

Yazora is a Replica. He's a combination of all 13 Darkness. Crafted from Sora's memories to be as close to a human as possible. Master Xehanort is working with Yen sid to train Sora, Kairi, Lea ect... Xehanort is not evil. Xehanort is not an antagonist. He's just training his pupils to wield the Keyblade, and become a Master like he is. He's doing this to save reality, by getting a keyblade wielder from unreality to save the world. Yazora, is a crafted replica/ keyblade wielder, made from Sora, Riku's dreams, and Kairi's memories to save reality. All the characters in Kingdom Hearts from Light and Darkness, are part of a whole person, who form a new type of keyblade wielder. Xehanort, the Master of Masters, and Yen Sid are looking for, to save reality. Maleficent & Pete are the real antagonists. They control the heartless, and they will find the Box with the Book of Prophecies, with the intent to change reality into something else. Maleficent is about to become extreme evil soon, mark my words. This whole time Sora has been the force that has protected fairytales and prevented Maleficent from changing reality into negativity, and darkness.

[@GodoMatrix]

If a human brain has two sides, that means a character name Brain is actually two people!!!! *suspense music* Jokes aside, really cool theory. If data Brain is basically an older version of his thoughts, he would gladly help out with the plan of helping his friends. So i can actually see this becoming true.

[@SubduedRadical]

I was thinking "but there'd be two hats", but then if we assume that DataBrain takes Brain's original body, then only one hat makes sense. This theory, overall, makes a lot of sense. I have no idea if it's true or not, but it's very interesting. Brain said that his mission was to live to be the beacon for his friends, so it kind of seems reasonable that DataBrain would have the same character traits and be amenable to that mission as well. At least at first blush, this theory seems reasonable, even if something else comes out in the story later. I've seen several people suggest that Luxu wanted the Box hidden from himself. Anyway, got sent here by your "What's in the Black Box" video, so now I'm going to go watch the rest of that one. :)

[@mikewallace9292]

We need a reaction to all xigbar quotes throughout the entire series I feel like there were many foreshadowing quotes or deeper meaning to his words than we originally thought

[@pillow5439]

There actually was. Almost all of them.

[@DarkMinior]

All this says to me is that’s it’s possible for Data-Sora to come back and go to the real world

[@damo]

I'm pretty surprised they just kinda abandoned him in there after he did for them in re:coded. I mean it's probably the same Data Sora in remind, but still...

[@yodarusev]

@@damo they still acknowledged og data sora in kh3 it may happen

[@KyleLyre13]

Fun little side note: In RE:Coded, they also bring up the possibility of "data versions" of themselves. Before Mickey, Donald, Goofy, etc. realize they're in the datascape, Goofy suggests that there could be versions of themselves the same way there are versions of other characters. And if that was the case, there is the possibility they could join Sora in his adventures. Jiminy tells them that it's possible, but that the "whole datscape is fragmented, and not a complete entity like [they] first thought." Then they get distracted and the ADHD sets in and it never gets brought up again. Considering that Maleficent later in that game mentions that "The long slumber" would soon end and that's why she's looking to bathe the Worlds in Darkness, to kind of get a foothold in the cosmic scale. This is a Maleficent that we know know has been to the Age of Fairy Tales. Who knows how much she knows, but it lends credence to the theory that the interplay between someone's Data version, and someone's Real version, is going to be important at some point.

[@invictusxvi]

small game theory that if the True Dandelion is Strelitzia, it has trouble keeping form because the real Strelitzia was destroyed. Maybe because the real Brain still exists, a data version of him would form just fine. We know something eventually happens to the real Brain, perhaps causing the Data Brain to have to pass off his keyblade. The bequeathing happens through another apprentice or directly to Odin; Maybe Odin finds it as a result of Data Brain passing on and that's why it's hung up on the wall, to honor the life of the mystery person it belonged to

[@OversoulGaming]

I just took it as Luxu sent Brain forward in time and if you remember the rules of time travel in this franchise only your heart can move forward through time your body is either destroyed or stays behind. So he possessed the body that was left behind. However because of the book of prophecies they knew that he was going to show up in Scala ad caelum in the future so they had a vessel waiting for him so he was completed so technically you end up with two versions of Brain. The one in the past possessed by Luxu who goes on to become Bragi, Braig and Xigbar, and the resurrected one in the future who is the real one.

[@demonking-zm3rs]

Bingo

[@yodarusev]

what made you assume Bragi is Luxu wtf

[@OversoulGaming]

@@yodarusev because his name contains all the exact same letters as the other iterations of him and he seems to be the one most content to hang out with Xehanort and Eraqus during Dark Road. Just the fact his name is Bragi, a 2 letter difference from Braig, is a dead giveaway. This franchise does not do stuff like that out of pure coincidence so it's Common Sense really

[@OversoulGaming]

@@yodarusev also keep in mind that Luxu admitted to body hopping from years in the KH3 epilogue. So Im not saying Luxu IS Bragi but I am saying he possessed him at some point.

[@yodarusev]

@@OversoulGaming sounds more like a red herring if anything And the name Bragi was taken directly from Norse mythology, it's the name of the god of poetry

[@travisjones4689]

These are all different thoughts I had while watching this: 1) I feel its strongly hinted by Maleficent (and in your video showing the maleficent cutscenes) that the black box wasn't just hiding "somewhere", it was hiding some-"when" - and that the Keyblade War between Sora and Xehanort had to occur before the box was going to re-appear. For whatever reason, Luxu either pretended to not know, genuinely lost his memories, or was looking for a some one or some sign that would signal the point in which the black box would or would not return. I'm moreso thinking the latter of the options makes as much as sense as him forgetting about it, because we know that for a variety of different reasons, people can be made to forget about the existence of people until they suddenly return to existence (everyone forgetting about Sora for example). It seems that also based on the secret reports that once Sora and Xehanort's war concluded, that the MoM would return, and the Foretellers (which we actually see happen) would as well. We know that for whatever reason Ava isn't there (either she's dead, trapped with the dandelions, or is somehow involved in the "true dandelion" mission, or something else). We also don't see the MoM just appear at the same time as everyone else, meaning either he could show up right after, or like Ava, he was never intending to show at the same time (despite Luxu seemingly expecting that to happen after the Keyblade War ends, yet not commenting on it - instead remarking about Ava instead). Perehaps something else needs to be done before the MoM can/will fully return. 2) Brain's goal is to free the Dandelions from the Data Realm and return them back to the world. ( and if that wasn't his goal, then it was sure a waste of time to repeatedly show him saying that was his goal). 3) Brain must time-travel to roughly 100ish years or w/e or so before the events of the mainline KH games so that he can become Eraqus' grandfather. For some reason, Eraqus has at no point said anything about the dandelions, so its not known if he has any idea about that side of him or that history, or even that being a goal that was important - for some reason. We only know Xehanort knows about the Lost Masters because he talked to MoM at some point, and that Eraqus MIGHT know about them and pretends not to because its something to hide, or genuinely doesn't even know that much. 4) People in Scala at that time knew Brian was going to be there, and even had a medium ready for him. The question is they either learned about this because they got this info from some version of the Book Of Prophecies, or some form/version of "Luxu" went to Scala to both give his No-name Keyblade and also the info about Brain arriving some day. In particular, the No Heart still has to get to Scala at some fucking point because its there when Xehanort and Eraqus are kids - and unless Luxu literally leaves Brain the MoM keyblade, but then ONLY takes over his body but somehow lets his heart still have the keyblade, allowing Brain's heart and the NoHeart to like skip thousands/hundreds of years of watching the worlds that Luxu is supposed to do... that would mean that Luxu deliberately chose to not let the Eye of the MoM see the worlds change over time, and would've actually caused the book of prophecies to not even be able to be written in the first place, as the MoM would only be able to know of the events that happened from when Brain arrives in Scala, up until the point where KH3 ends. While interesting, I think its clear that the Brain that goes to the future doesn't have the No Heart with him, and that the version of Brain with the Org Coat only ends up giving the Keyblade, at some unknown time, over to Scala someone ends up inheriting it and just joining scala; as the keyblade has be in the world to let the MoM view everything and write the book of prophecies. Not to mention, the No Heart is like put on display as like this important thing, so its not like its just some random keyblade from some random keyblader - its clearly understood to hold some significance, but we've been given no reason to believe that it stemmed from any information that Ephemer himself would've had; meaning Luxu had to at some point deliver or give the thing over and explain its significance to at least someone important. 5) We know there's a reason we are deliberately shown two scenes with people who are implied to be Luxu: One where he fights a darkness, even though he knows he can't kill it One where he talks to Brain in strange manner, acting as if he has no idea about the situation at hand and asking him about everything going on, and either threatening or offering him something relating to his inevitable mortality. I want to say that it looks like Luxu is deliberately letting Darkness go within him, though I can't think of any reason why other than to sabotage some aspect of the MoM's plan - as that would mean there's now Darkness either in Luxu or Brain. 6) Why send Data Strelitzia into the future? Does Luxu know that there will be vessels there for the data to be used for some reason? If not - seems like a waste to just send a data husk hoping something happens with it... there must be some understanding of what's going to happen to the data when it arrives, otherwise its a stupid plan that makes no sense. 7) Where the fuck exactly is the Keyblade Graveyard? We know it's supposed to be where Daybreak Town is - or close to it - and yet, somehow based on the implied order of events, a version of Brain with a org coat is at the Keyblade Graveyard at roughly a similar time where Ephemer is already creating Scala... but Scala is literally being rebuilt on a flooded world, so what the keyblade graveyard just wasn't part of the whole world being destroyed and flooded? lol If they would've just shown Org coat brain standing over the same ruins Ephemer was in, it would be so much more clear when this scene is supposed to take place, but now it makes me feel like that scene could've taken place any time at all - as the keyblade graveyard doesn't really seem to change. It makes me wonder more about certain timeloop theories as an alternatively theory (which I don't like), where Luxu and Brain have ALWAYS been the same person, or look the same, and this was done intentionally by the MoM so that Luxu would kind of interpret what the MoM's intentions were, and make some kind of decision. We know Luxu straight up says that what he's doing is based off of his take on what he should be doing, and what he thinks should be done. It just makes too much sense, and is implied too directly, that the evicting of Brain's heart to the future and taking his body was just what was done here... And I think that Luxu needed to take that last pod to at least get back to the real world (the darknesses couldn't escape the data world without a vessel to go through time with on the ark, so I don't think Luxu was so special he could just leave whenever he wanted to) , so he took over Brain's body, left his old body behind, and together they traveled back to the real Daybreak Town and then he released Brain's heart - allowing it to travel to some point in the future where Brain's hat could be used as medium to allow him to return (likely all put into motion by Luxu, or perhaps someone else who wanted to bring Brain back) and then allowing Brain to fulfill some prophecy, or begin some plan, that will allow him to one day work to freeing the dandelions ( and if that wasn't his goal, then it was sure a waste of time to repeatedly show him saying that was his goal).

[@milka3073]

Also doesn't eraques say after he battles terra: so i carry darkness inside me

[@temetyly]

Firstly, like this format a lot. On the theory, A lot hinges on the data backups, and while I think it's a wild concept, you've made a very convincing case. Up to now, without giving much consideration yet (I still need to play MoM), I assumed there was just some time shenanigans happening and that something occured after Brain ending up in Scala, where the scene in the graveyard is "after" the scene in Scala (not necessarily temporally, but for the objective viewer). But that ignores how strongly it's suggested that Luxu would bequeath Noname right that moment and the report about the order of events for Luxu as well. So while I'm slightly sceptical and wanting to see things unfold more, yours is the best I've got 😅 It explains a lot all at once, like Brains original keyblade still being in rotation despite his having No Name. Nice work Damo

[@alexb.9446]

The writer team must have crazy flowcharts to follow their own story without getting confused. I never thought of the data backup Brain theory, but it's very plausible. I thought that the Luxu-Brain in KBG was just the future of the Brain we see in Scala ad Caelum. But I think your theory makes more narrative sense.

[@Noah123204]

A data version of someone in the Real World........ Huh. I mean....would Riku Replica be a data version of the Real One?

[@damo]

Close, but it would be like journal Riku from re:coded or Data Sora becoming real people. Which im kinda surprised they haven't already done honestly, Data Sora grew a heart and a keyblade after all

[@gracekim25]

Sort of😅

[@Rationalityislost101]

@@damo I haven't played KH3 so ignore me if this happened already, I thought Sora's Data version would become the medium/vessel for Roxas/Xion to return as his/her own person. I'm caught up finally to start KH3 sometime this fall.

[@PedroSousa-fq2xu]

I really like this theory solely for the reason it explains what happened to the last data pod. It bothered me that nobody mentioned this so far, since the fact that one data pod had been left behind means that the data world was never really locked. This would also mean that there was nothing preventing the 4 darknesses that player trapped in the data world from escaping eventually. This theory perfectly explains how the last pod could have been used (and the data world locked for good), while also explaining the whole Brain situation.

[@LinkingYellow]

Xehanort uses NoName to unlock his heart and put it into Terra's body. This implies that NoName is a Keyblade of Heart. If it is a Keyblade of Heart, Brain can hide the box and live as Luxu's apprentice before unlocking his heart and going to the future on his own without using the pods. The simple answer is just that one scene happened before the other.

[@kaison12205]

Thing is he’d have to pass the keyblade on first

[@gracekim25]

Oh yeah 🤔

[@thatoneLerrydude]

The ultimate KH plot: You leave your body to go to the future and let a computer version of you use your body in the past.

[@davidsaylors24]

Yo! Question about the " true dandelion" that gets put in an ARC. It looks alot like a blank body.. wrapped it white cloth... like the ones In Kh3. the one Demyx is seen carrying. Maybe it was a blank body luxu sent into the future to be a vessel for brains heart? Or idk. Just thought it was a funny company

[@everlytriplett112]

I need to get caught up on the lore again! I still need to piece together re:mind and Melody. You're videos are great thanks for all the hard work and quality content!

[@notRowan61]

Theory: Schrodinger's Brain

[@TwinMajora]

The theory hinges on the black box being exactly what you think it is, a Daybreak Backup. The fact that it also explains to some degree why Luxu has no clue where the black box is in KH3, and gives Brain reasonable motive to agree to all of this, makes it very convincing.

[@lozamews9374]

Youve done it again Damo! Legendary video

[@BrasilianFury]

Thanks!

[@BrasilianFury]

Not sure why it wouldn't let me go further in the comments but yes, kind of a big fan of this particular theory as well.

[@damo]

Woah, thanks so much!!!

[@davidsaylors24]

What about this. Brain is luxu. Luxu is Mom. Luxu is brains future self and mom is his even more future self. Brain. Luxu. And mom. All the same person. It would explain the scene with brain having the no name. Andbit seems luxu is getting less serious and more lax every time we see him. He wont have to make it to the future to recomplete MOM. He will become him

[@KHAce]

I think the theory is super solid overall, but there is one point I'm not too sure one. It appears that Data Brain is actually the one who traveled into the future, as he says "Some of my friends escaped with me. This could be the final memory of the Real Brain being copied over into Data Brain before the pods in Data Daybreak Town departed. Of course, we don't know how or where the Data Backups come from, but with them being data, it could be possible Brain's is just... loaded into the final pod and sent on his way. I dunno, that point, in particular, is hard to give a solid call on, but I think all the evidence surrounding it that you dug through is super cool!

[@OhNoBohNo]

I think part of the difficulty is mapping the intricacies of this other world. We see and get information that it's a data backup, but is it a projection in the same way the others from the Book of Prophesies are? We know this other digital world has SOMETHING to do with dream worlds, because Ephemer contacts the Player through dreams and all the other Dandelions & their Chirithies become Dream Eater spirits. We see Master Ava treat the data world as if it's a whole other real alternate dimension, not just a digital recreation. Then again, if it weren't for Ephemer, we wouldn't know ANY of the worlds we initially visit are just projections; I'm not sure ANY of the Foretellers actually admit this to any of the kids. In my mind, Data-Daybreak is more than a simple digital back-up, but a combination of a Sleeping World and Datascape, perhaps like the case of the Grid. While the Book of Prophesies projects the future, this dream-data world creates a convincingly real alternate present, at least until Maleficent's use of the pod causes it to start to collapse. I don't know if this amounts to anything. Maybe it means the data duplicates can use bodies. Maybe it even means they can reproduce and there's no weirdness with spawning an ancestral line to Eraqus. There's a theme in the series of the connection between dreams and the 'real' world. Either way, I just find it all fascinating. And none of this accounts for Brain's comments about becoming a 'virus.' What did that MEAN? Surely, if Brain was going to enact something like that, it would involve his data copy doing something with the digital world. And yet if the data world went down, and all the Dandelions became Dream Eaters, what would Data Brain even do? How would it survive that, unless, as you said, it went to the real world?

[@MissileWaster]

I don’t think it’s two Brains. I also don’t think the box was hidden in “unreality”. I think the box was hidden in a different timeline entirely, the timeline where Sora went back in time and light prevailed. So Brain had to travel to a different timeline with the box and hide it, then travel back to the “prime” darkness prevails timeline, potentially spitting him into the future (the future from his perspective, I mean). So not only time travel nonsense, timeline travel nonsense lol. The main thing that my pet theory can’t explain away is him waking up in Scala without the black coat, which honestly I think was a small detail Nomura intended to get all of us talking before we find out what’s really happened.

[@strelitziamystery21]

Plot twist Luxord is data Brain and Demyx is data Ephemer! For real though this a really good theory!

[@jancarmona1155]

What if the Brain that arrive in the future is actually the same that appear in the graveyard but some time after? Maybe he became Luxu’s apprentice, inherit the blade and box, hide the latter and then travel to the future (with the help of some friends that where supposed to travel with him) arriving in Scala ad Caelum where he would take his own apprentice that will inherit that keyblade, thus the keyblade will remain in Scala as Caelum until the times of Xehanort.

[@potatoplayz4653]

Hey do you know how to purchase additional contents in pokemon quest? I kinda like the lapras pool but i need to purchase the additional contents in pokemon quest..

[@changanat]

Nomura is straight genius with this story and storytelling and so are you man with figuring all this stuff out. Just makes sense wow. Gotta say though a mobile game, Union X has got to be the best story and is my favorite out of all of kh.

[@seemangalbj]

The 20head lad doesn't miss

[@SethJoseph95]

WOWOOWW yeah i like this theory!! guess we'll find out maybe in dark road in september or another future KH game

[@Alex_Barbosa]

Maybe the Black Box didn't exist "at that time" because it was sent through time in the remaining Arc.

[@theflyingkitty13]

I always feel like luxu snatched his body and cast his heart into the future. By the time Brain arrived at said time period; somebody remembered him thus giving Brain heart a body?

[@Morick123]

I don't think we should discard the nobody theory so fast 🤔

[@julynene4237]

Skuld: two Brain is better than an Ephemer

[@Isiel42]

If this is true, then Data-Brain must be Yozora!

[@redgerran]

What if the Union Leader Luxu gave his keyblade to was Ava?

[@Ventus753]

Dude you ARE the REAL brain! get it..? no..? ok.

[@charlieotoole5343]

I’m gonna stick with this theory until we know more about it, I love it, though I’m not particularly fond of all the data related stuff becoming even more relevant to the lore. I’m just afraid it gets a big deus ex machina as the replicas

[@TamTroll]

One theory i saw that i liked is that Luxu took Brain's body as a host, freeing Brain's heart to travel into the future without the need of a pod. Luxu then held onto Brain's hat and gave it to the city of Scala, either telling them about Brain, or knowing that Ephemer would tell them about Brain. Time travel needs two things in KH; Someone who remembers you, and a vessel for your heart to inhabit, with a new body being formed around it, often this vessel takes the form of cloaks or other clothing. in this case, the memory is in the people who were told stories about Brain, or possibly Luxu himself returning to Scala years later. the vessel is Brain's hat, which is returned to him immediately upon him waking up. So his heart latched onto the hat and made a new body for itself nearby. so both bodies are Brain's body, no Data needed. I don't feel like Luxu would be willing to get rid of the black box so soon after the master's departure. I do like your idea that he gave it to someone else to hide it from himself some time in the future, but as of KHUX Luxu seems intensely loyal to the MoM, I'm not sure he'd be willing to give up the box so quickly and risk someone opening it, even if it is one of the new union leaders.

[@traverserthein-between9359]

So now, real talk. I think your theory is pretty plausible with enough back up, even if it topples over my initial one after seeing the end of the story. I would also think that the Data one would be in the Org Coat. Correct me if I'm wrong but we have yet to see a being belonging to a Data World or made purely *from* Data sustain itself outside a data-based plane of existence. In that case I wonder if it would act like a normal person. Age, get old, die and stuff. Or maybe it would just glitch out. We know the box will be hidden where not even Luxu will know where it is between the end of KH3 and his reunion with the Lost Masters. If we were to take this theory I think that there would be a time in which Luxu trained and gave knowledge to Brain but how would that knowledge affect the time period Brain is in with Scala Ad Caelum? Perhaps it remained a family secret but Xehanort, being Eraquis' friend, managed to weasle his way in and find it. After all, before Birth By Sleep there was something that caused a major rift to form between them for years, something Xehanort noted in his letter of appreciation to being welcomed to the Mark of Mastery exam and having Ventus be accepted in the first place. If we take Brain to be Eraqus' Grandfather the former would be third generation. They seem to be the same age from when we last see the former and Eraqus in Dark Road so I'd say maybe close to 70 years (spit balling) of a time gap where Brain in this scenario would be "lost to Darkness". Backing up a little, what ever happens to the what we assume is the Data-Brain is in the Graveyard at an unknown time and Prime-Brain is in Scala, that makes a huge divergence between them. At the core they would start off the same and one may be able to follow the other's logic, but their experiences would be totally different. I wonder if Data-Brain tried to leave some knowledge to his "real self" to pick up on and read. And I mean, someone would have to notify Sigurd and his superiors that Prime-Brain would arrive at Scala at that time specifically.

[@axsprime]

It's crazy talk but it's also KH so I'll believe it.

[@thomaswilliams5571]

@damo279 have you considered the fact that Brain could have time travelled to the Original Scala that Empher founded because Empher has the memories and Master Defender Keyblade is the waypoint?

[@horrorpill]

Yeah, I agree with you. I also thought that it must be Ephemer.

[@AbrahamLure]

Oop, this one hits different now

[@skelenize]

god damn it nomura why cant you just remain sober

[@andrelima4125]

The Brain in scala cant be eraqus' ancestor because Ephemer is the one with his keyblade. However Keyblade box Brain or his successors will eventually be master of eraqus/xehanort in scala...

[@TheKira708]

Mabe the Master defender was passed down, just like No name was.

[@AskWaffles]

It might not be entirely plausible, but couldn't Luxu have bequeathed his No Name to Ephmer?

[@adammorin2955]

I feel like luxu in the keyblade graveyard is his true face. I feel as luxu is brain and that he sent brain from union x to scala and not taken his body like everyone thinks. I also think that not a lot is known about luxu or even brain at this point.

[@khaddict7]

This is great, I was thinking about this yesterday and came to the same conclusion regarding their hammering home of the Data Backups thing. They really do go out of their way to chat about it as much as possible and leave that door open in the final two updates. To me, this guarantees that the data backup is being used for Strelitzia and Brain, who took the last pod before things went to shit. I think your theory is exactly right man. I do wonder how Data Brain would feel about all this. I have to say I absolutely love this, if it ends up being true.

[@Soundfire6]

This far into kingdom hearts and I gotta ask myself all the time WTF is going on lol

[@lovelyrodriguez2190]

Isn't that just the fandom in general?

[@Soundfire6]

@@lovelyrodriguez2190 yea all of us

[@gracekim25]

@@Soundfire6 well not everyone but I admit I feel kinda frustrated that it will take a while for us to even know who this ‘we’ and the two brains are

[@nesquick5022]

big brain damo

[@gionmattiacarancini3578]

Interesting theory! The only thing that I'm not sure right now is that Brain is Eraqus's grandfather. It seems too obvious for KH standards and he looks like an important character for the future of the saga (they gave the spotlight to Brain during union X, just for him to be dead off-screen in dark road? ) I have the feeling that he travelled to the present/bbs time instead (and that we'll see him soon enough). Maybe Eraqus is just distantly related to Ephemer or one of the first wielders of Scala ad Caelum and his grandfather is just a random guy. Remember, we have Kairi's grandma treated the same way (random woman who never returns), unless dark road changes that.

[@iocu]

my Left Brain: hmm, yes, very interesting,... my Right Brain: xehanort mom kinda qt tho

[@movespammerguyteam7colors]

So one of the Brain(s) is a data clone? It makes sense that he can be in 2 places at once.

[@damo]

That's one theory. At the very least I don't think the guy in the past can be Luxu, not without contradicting Report #12

[@michaelmurray8134]

Honestly it could be either one. At first I was thinking that Luxu took brain's body, but your theory made me Remember that Luxu's role was to pass down the key blade. Luxu didn't know the location of the Box which was given to brain. Sometime during Kingdom Hearts 3 Luxu Must have finally found the Box either before the war or after Considering we don't know when that Last cutscene truly takes place, a few days, a week, or even a month. Also there is a theory that Luxu could have did what Xehanort did to Ven and split Brain's Heart. Taking the dark half as his apprentice and letting the light half leave in the pod.

[@TheSecretReports]

This reminds me of Data Olette's money bag, Roxas's data blue marble, AND the data photo of Roxas with the Twilight Town trio ALL managing to exist outside data Twilight Town and remain as stable objects (they don't glitch; they're tangible objects). So I wonder if there's a chance data bodies can leave data worlds after all, and have their existence only be strengthened and legitimized if it receives a heart, or grows its own by interaction. Joshua in DDD says the "dreams" of the TWEWY gang were able to solidify themselves as people because of their interaction with the world.... I wonder if data is the same ? Maybe data bodies can truly exist in the real world? inch resting... veeerrryyyy inch resting.

[@TheSecretReports]

oh my god-- MALEFICENT. She possessed her data self from Enchanted Dominion's data, and left into the real world with it! Is she confirmation that data bodies can exist in the real world ???

[@damo]

I figure the pods work sort of like a printer, the way that real items like the munny pouch could be 'printed' into the real world in kh2, perhaps anything entering a pod could become printed into the real world in the same way? The fact that the true dandelion was slumped over though leads me to believe that a person may need a body to occupy, but then as you say Maleficent sorta proves that you don't. Lots to think about!

[@Rationalityislost101]

@@damo I think if we keep going w/ the 3D scanner/printer analogy, that the pods were still in development and the separation leading to time travel was an unintentional bug. But the original intent was to transcode reality into code and vice-versa. Author is likely a fan of The Matrix, I certainly feel like I am back at the architect scene whenever we have a MoM interaction - more questions than answers.

[@Vaedyx]

I saw a comment that made a lot of sense. Luxu took over brain's body but Brain was okay with it. Luxu did it to save him. Brain as a heart with no form traveled forward in time. there they had his hat as a medium and memories of him for his body to reform. So Luxu take's his body then in the future is brain with his new body. They specifically mention in Union X that the heart alone can regenerate a body given the correct conditions.

[@NoTimeStudios]

I mean, are we certain that the events shown are in the right order tho? I kinda think that Brain in the graveyard happens in the future after he wakes up in Scala. Kind of like the whole Scala bit being its own secret ending to UX and showing a brand new story/the lead into another game which'll end with Brain in the graveyard with the box after learning something important about it.

[@gracekim25]

Mmmm….I mean you make a good point 😅

[@soragamma25]

Your theory is pretty interesting, but I've got a thought as it crossed my mind, i think the data staritzia wasn't just data but a "doll" just like what we see in Kh3, the white outfit fits well enough, but also here's where it deviates, what do we know about organization dolls? They copy a certain person, one example is Roxas/Sora for Xion's case but also the purpose of the new dolls made afterwards are meant to hold the hearts of other keyblade masters, but it's also possible that Luxu helped make a doll with the master to make his own apprentice training them himself and giving his keyblade (aka the MoM keyblade) to them, the doll having copied Brain will have similar thoughts as him but live differently, but we really don't have any idea of how long they can live for, or if they die at all, they may just need to copy another person to keep up the act, they aren't any different than the original person but it takes time, but this could also reveal that not all the Luxu encounters were him either, we know data sora can call forth the kingdom key to him, and the same for Xion too, Brain is smart while Luxu has information, and because dolls are neither light nor dark, they have special access to different worlds (example: the Realm of Darkness or The World That Never Was) so this could be an interesting plot device later on in the story. 🤔

[@TheFatDrake]

What if Luxu body jumped into Brain, setting his heart free. Brains heart then time travels to his hat in the future, using it to rematerialize? Unless I’m misunderstanding KH timetravel.

[@aetherwise2159]

Your big-brain theory about data Brain makes my potato brain have a strain. KH lore walks a fine line between mastery and madness, I have to wonder if they know what’s happening or if they chuck random ideas at a wall and wait for the community to make up the continuity 😝 Great theory, though, very compelling. Help me follow though…if Brain have his keyblade to Ephemer, who then founds Scala, why would possession of his keyblade matter for it being passed to Eraquas? Couldn’t it have been bequeathed by Ephemer instead?

[@emmawilson1373]

I think the Data Brain thing is the most likely explanation. There was one pod left after Ephemer and Skuld came back. Afterwards, Luxu could've brought Brain's data out of the virtual world and possessed (and/or passed the Gazing Eye), while sending the real Brain to the future, and he wound up in Scala ad Caelum. The idea that Brain is Eraqus's grandfather seems very plausible in my opinion (they kind of look similar), so the real Brain going to the future makes more sense.

[@Danielle-tn1qi]

Hey man I know I'm late to the party. but is there any possibility that Yen Sid could be Brain? If Brain did become Luxu's apprentice, it's not impossible he taught Brain to jump bodies. Further to this Eraqus (implied to be Brain's grandchild) says no one knows exactly what happened to him. Yen Sid is said to have been a Keyblade Master in active service but we've never seen him to summon a keyblade? But Yen Sid sure knows a lot about Keyblades and the nature of the world for someone who's not really directly involved. Yen Sid is also said to have trained Mickey and has been helping out Sora and pulling strings in the background. If Brain is still trying to free the Dandelions, helping Sora out, and being present in his Tower just outside of Twilight Town where Roxas was undergoing a DATA SIMULATION would be in service of that goal. Also- HAs anybody ever noticed that the big glowing globe on the top of the Data Arks looks an awful lot like The Cornerstone of Light from Kingdom Hearts 2. I don't know that we ever got an explanation for that MacGuffin or why it could repel the Darkness, but if Data Daybreak Town and the Dandelions are inside of it with the last of the True Light, it could explain why Disney Castle never fell to the Darkness. After all Maleficient attacked it in KH2 but restoring it banishes the Heartless. And Yen Sid knows an awful lot about that too. But that's just a Theory...A GAME THEORY! LOL

[@askmiller]

I'm really late to the party, but why exactly does Brain have to be in 2 places at once? It's a story involving time travel. What makes more sense imo is that the cutscene with Brain in the KBG is what happens after Brain's adventure in SAC. We saw already that Eraqus knows how to stash his heart in the body of another at the end of KH3. My guess is Luxu just stashed himself in Brain to escape then at some point was released.

[@coatguy2990]

Thanks for explaining the story! I’ll never understand what the Japanese find so great about mobile games. I got a PS4 and a current gen PC at home with which I can play Cyberpunk on almost max settings. Why the fuck does Nomura release new games on the phone? On top of that, why are these low quality games the ones with the most importance for the story?

[@ollyroo]

It would definitely be interesting if the old man was brain and the reason he watched over xehanort was he sensed the players and thus ephemers friend’s heart inside him and felt duty to protect it

[@fisthound0027]

Well i think the mother is Brain’s daughter cause she looks just like Brain. Meaning Eraqus and Xehanort were brothers

[@matt_playzsora7654]

I love your kingdom hearts content

[@Logisticious]

Secret Report 12 in KH3 states that when Luxu passes on his Keyblade, he must depart the land “keybladeless” to fulfill his final task. One of the Brains has a Keyblade in the finale, the other doesn’t; Luxu is the one who went to Scala, Brain is the one who got the key and the box. It would explain why Xigbar doesn’t know where the box is in KH3 but idk how he finds it, unless the Xigbar in the epilogue is actually somehow Brain and they did a switcheroo after Xigbar’s defeat… but Xehanort’s bequeathal promise to Xigbar before his defeat throws that off, so unless he just FOUND IT, idk…😥

[@RebeccaOfTheForest]

Don't drive yourself crazy or anything like that for Kingdom Hearts.

[@damo]

Oh we're way past that Jerry

[@01Danni10]

14:35 It's a nice Theory! 😄 It makes sense! Except for 1 thing! 🤔 I don't understand the Brain's Hat portion! 😯 I can get Real Brain giving his Hat to Luxu but... what about Data Brain's Hat? What happened to that? If they did get Data Brain then wouldn't he be wearing a Data Version of Brain's Hat? 😯 There will supposed to be 2 Brain's Hat, right? What happened to the Data Brain's Hat?

[@anti-roxas850]

I thought that MAYBE Luxu possessed Brain's Nobody. Then when he found a useful person to possess, he ditch the nobody & destroyed him. *And just like the organization members, Brain wakes up in the place he was separated.* In the town many many years in the future. Which begs the question, is it alot easier to possess people as Nobodies if their hearts are fragile? As we know, Luxu possessed XIGBAR!!!! Not his complete form.

[@bensherlock1328]

One theory I have is that Lauriam and Elrena arrived in Dwarf Woodlands and Enchanted Dominion sometime, after Birth by Sleep, and before KH1.

[@MemeinAndDreamin]

This means the virus the book was talking about is Luxu in Data Brain's body, hence the virus term.

[@DeafSavage]

My theory with Brain may make zero sense, (it mostly likely will not make sense.) but on a few occasions I’ve thought about this: Brain is Yozora. But…which one is he? There’s a reason why Yozora said the form he takes isn’t what he “really looks like”. Backpedaling on that, if that turns out to be the case, then prehaps Luxu didn’t just take his body, but also inhabited his heart inside his in order to stay intact, kinda like Sora and Ventus. Now, my actual opinion about the theory in the video: I’ve thought that Luxu would have to watch over the black box and the key blade for whatever long, (Since there’s that mention that he “doesn’t know” where the black box is.) but how would he do that if he had to bequeath it? Maybe he did explain to Brain that this way of taking his form is the only way to survive. However, that sounds too simple. Perhaps Luxu had suggested a empty vessel that inhabited Brain’s heart to the point where he woke up in Scala Ad Caelum? Again, the sequences of scenes like this conflicts with how there’s 2 Brains, so the empty vessel wouldn’t make sense here, part of me really wanted to mention the “true dandelion” scene, but I’d be thinking into it a bit too far. These 2 Brains, if there is indeed 2 of them, how do they both coexist in the same universe if one managed to live for years, and the other just woke up in SaC? That would only mean the real one was hidden inside Luxu the whole time, until he gets defeated in KH3. Problem: The epilogue.

[@imbingnotgoogle]

the more i try to piece together a theory, the more i get lost because No Name is present in SaC during Xehanort and Eraquis’s youth. Your theory aligns with mine: How Luxu may have possibly formed a two-fold plan with Brain to inhabit his data backup while sending the real Brain into the future by leaving his hat with Sigurd. My thing is, Could Ephemer perhaps been the first apprentice? Since he already (in my theory) Already transferred himself into Data Brain, he may have just simply bequeathed it to Ephemer and then Ephemer goes to become the first Keyblade Master of SaC which could explain why No Name simply ended up being on display in SaC and how Xehanort eventually inherited it while Luxu encounters Braig at some point. Idk how to properly tie all of this together and may have gone off the deep end so who knows

[@kuricosmos]

Setting aside calling No Name the Master's Keyblade, when it is in fact, Luxu's keyblade :P (it merely has the Master's eye), the Master isn't keybladeless or implied to be at any point. This is a possibility that can work, since if Luxu took Brain's body, he would not be keybladeless and I don't believe Luxu would contradict his own report. To further support your theory, the tale of two goats, Black and White may not have been Luxord and Xigbar but rather, Luxu and Brain. I've been thinking, why is Luxu dubbed the traitor when all his actions and concerns, imply he Followed the Master's orders so faithfully inspite of his youthful protests? Perhaps his betrayal is that he didn't follow it to the letter after all in terms of the Box. In other words, being branded a traitor is a red herring of sorts. Since regardless of whether the Brain with the Keyblade is data or real, he shouldn't have been entrusted the box because he could open it.

[@Z-A-C]

Brain could be a reconstruction of Luxu. Meaning Luxu might actually look exactly like Brain

[@discam0]

I guess the real question about that theory is if you can take Data beings out of their Data World and into the real one or not. If so... then couldn't the Brain we all know already be the Data version of Luxu? But that's just something I just came up with. Although... this gets me thinking if after possessing Brain (or data Brain I guess?), can Luxu now time travel to become past Brain? If so, was Luxu future Brain in past Brain's body all along? Probably not. Just an interesting idea I had. But I do think the absence of his hat in the KBG scene and then him getting it again in Scala seems relevant. So too does the fact that he was expected to arrive at Scala. Why was his hat missing in the first place and why did he get it back after arriving at Scala? Why was he expected to travel and arrive in the future in Scala ad Calem? Clearly, it was planned, but by who? The best answer would be his future self. Sigurd has memories of future him and his hat as a medium. So I am guessing future Brain in the KBG is the one who left his hat for his past self as a waypoint. Whether or not he was possessed by Luxu yet or is Luxu I can't really say but it's probably one or the other.

[@Dreq458]

11:34 and that also highlights the stupidity in lauriam's goal. finding data strelitzia won't help strelitzia in the slightest. he would just be replacing strelitzia with a data clone of her. he isn't saving anyone. the real one would simply be heartbroken in the final world, wishing to fully enter the realm of death since no one wants her anymore. replacement =/= resurrection

[@TheWinglessHawk]

The KH 3 ending comes to my mind. The way Sora soul is torn to shreds, but can be put together like before. Wasn't there an info in KH 2 that a torn heart can put itself together? What if a person/a heart was broken in two and then seperately put together? That would make Brain's case possible and Sora is the best example for it. I think about Chain of Memories, Birth by Sleep and the Beginning of KH 2 as Roxas is sowhat Vanitas and somewhat Sora? Please no hate, I am also just here trying to make sense of it all. ;3

[@victorbraga5542]

Man, I was coming to the video not expecting too much and now I'm truly believing (with a grain of salt, about any theory, not just yours) You pointed some moments that If you're right about it, really makes much sense, I'm just not sure about the vessel part(But maybe It is, or may be another explanation for this If It's true)

[@gavres90]

Right Brain has Ephemer and his keyblade as medium for travel in the future, but when he arrives his friend is probably dead. That's why they need to use his hat as medium. I think Sigurd is another vessel of Luxu that, whit his memory of Right Brain and in possession of his hat as medium, has done his role of waypoint for the travel. So that leaves us with Left Brain possessed by Luxu, living the rest of his life. Then, at the end of Ephemer life, he led the master's keyblade in Scala ad Caelum, using Sigurd as new vessel and bringing Right Brain back.

[@U-Flame]

I don't have as much an idea on the timeline of events either, but one thing that was bugging me throughout this theory crafting is the concept that Brain is in two places/timelines "at once". Why would we assume that the two scenes are happening simultaneously if they take place in different points in time? While we don't know all the exact mechanics of how time works in KH, it would be easy to imagine it being something of a straight line. That if the scene in the scene in the Keyblade Graveyard and the scene in Scala ad Calum took place in vastly different time periods, it's not hard to imagine its the same person. This still leaves many questions about the how and why, but the very basics of how I think it would have happened is Brain becomes Luxu's apprentice/body for the scene in the Keyblade Graveyard, and then later was sent into Scala ad Calum for the scene there.

[@McMurica]

Imagine dragging around a hard drive in a big black box for a thousand years because there are 4 beings of darkness stuck on the mechanical disc. It's like Antikythera mechanism meets Pandora's Box.