A lot of people have been arguing over the identity and intentions of the Mysterious Figure from Birth By Sleep. So I'll take a crack at this guy:
(Note: some of this was inspired by an excellent theory that Grass did a while ago. This just builds on it).
I'll say it right off the bat...this guy is Xemnas.
The first hint of this are the blades he's using. They may be blue, but they're practically identical to one of the variations of Xemnas's blades in 358/2 days where you can play as him.
Another hint is that he's wearing an Organization cloak. Although BBS revealed that MX was the first to wear the cloak, and others like Mickey and Riku have worn it, Nobodies are generally the ones who wear this cloak.
Something else I found interesting was that this guy is confirmed to have the EXACT same model as Xemnas from KH1 FM. Now they had MONTHS to touch up this game, and if they really wanted to, they could have slightly altered the model to make it different.
Now, moving past the hints...
Xemnas appeared to be defeated at the end of Kingdom Hearts 2. Yet how could this be? Xemnas had the power of all those hearts he gathered and he was STILL beaten by Sora and Riku? I don't think so. No, he must not have had the full potential of those hearts he was using yet. Master Xehanort said that to become part of Kingdom Hearts is to become something beyond human. Now yes, he was referring to the real Kingdom Hearts and Xemnas used an artificial one, but even if it is artificial, it's still a huge group of hearts like the normal one.
Also, Xemnas seemed to act like he still didn't have a heart. He said that "It seems your hearts have led you to obliteration. Perhaps it doesn't pay to be too loyal to one's heart. I'll have TO BE SURE AND REMEMBER THAT."
He's saying that he STILL doesn't have emotions. Which further hints that he hasn't fully tapped into all of those hearts.
So what happened after Sora and Riku "beat" him? Xemnas fully tapped into the hearts' powers and was given emotions and incredible power, including the ability to time travel.
But let's remember who Xemnas is...Terra's body and soul, who seems to be recovering his memories (as seen by him addressing Aqua's armor as friend). Now, if you suddenly lost ALL of your emotions, you probably wouldn't be a nice guy, right? But if you regained them, you'd return to normal, right? So, when Xemnas got those emotions again, his personality became much more like Terra's.
This being was no longer Xemnas, yet he wasn't truly Terra either. No, he had become something else entirely. He had NO NAME, which coincidentially is the Keyblade's name after you defeat the mysterious figure.
But where did he get all these abilities? Well, one way to learn something is to observe it. And as the Superior of Org 13, and Terra and Xehanort in the past, he observes EVERY ability that he uses as a boss in BBS:
*Fire attack = Axel (Xemnas connection)
*Wind attack = Ven (Terra connection)
*X shaped attack = Xehanort connection (or Terra connection if the Vanitas Sentiment fight with him is canon)
*Laser attack = Powered up version of Xemnas's laser attack
*Dashing back and forth = an ability of Terra (forgot the name, which is pathetic cuz I was playing as him today)
*Countdown attack = Marluxia's attack (Xemnas connection)
*Time stop attack = New ability granted by his time travel power
So, what did this No Name (NN) do first? Well, NN immediately went ahead into the future a few years. Yet even without his body, he encountered an apocalyptic world. In this world, Terra, Aqua, Ven, Sora, and Riku have all been killed. Not put to sleep or trapped, KILLED. Destroyed by Master Xehanort, who had survived as the piece of Xehanort's Heartless that was rejected out of Riku's body. It had survived, and was really just MX. So, NN tries to fight MX, but fails, because MX has already absorbed the full power of the REAL Kingdom Hearts. Barely escaping death, NN travels back to the present.
Now NN has to plan how to prevent the future. And the key lies not in the future, but in the past. He went to the past to test Terra, Aqua, and Ven. If they were able to defeat him, then perhaps together they'd be able to defeat MX in the future. And he was satisfied with each of their performances, which is why he nods at the end of every battle.
Now how does this keep TAV and Sora and Riku from dying? It doesn't. That's what the mystery game will be about (not 3D, the one confirmed to come after that and before KH3). The NN knows that changing the past could have unforeseen consequences, and decides NOT to kill MX at his birth or anything like that. For all he knows, that could somehow make Terra give into darkness and destroy all the worlds without anyone to turn to (Xehanort's presence at least gave him the sense that someone trusted him). He had to fix the problem directly, and thus will help TAV return and help all the heroes fight MX. Unless he dies somehow (which I have a feeling he might).
So, that's my take on our mysterious figure, the famous No Name. I'm sure there are some holes I haven't seen in this theory, but please comment so we can discuss this mysterious entity.
(Note: some of this was inspired by an excellent theory that Grass did a while ago. This just builds on it).
I'll say it right off the bat...this guy is Xemnas.
The first hint of this are the blades he's using. They may be blue, but they're practically identical to one of the variations of Xemnas's blades in 358/2 days where you can play as him.
Another hint is that he's wearing an Organization cloak. Although BBS revealed that MX was the first to wear the cloak, and others like Mickey and Riku have worn it, Nobodies are generally the ones who wear this cloak.
Something else I found interesting was that this guy is confirmed to have the EXACT same model as Xemnas from KH1 FM. Now they had MONTHS to touch up this game, and if they really wanted to, they could have slightly altered the model to make it different.
Now, moving past the hints...
Xemnas appeared to be defeated at the end of Kingdom Hearts 2. Yet how could this be? Xemnas had the power of all those hearts he gathered and he was STILL beaten by Sora and Riku? I don't think so. No, he must not have had the full potential of those hearts he was using yet. Master Xehanort said that to become part of Kingdom Hearts is to become something beyond human. Now yes, he was referring to the real Kingdom Hearts and Xemnas used an artificial one, but even if it is artificial, it's still a huge group of hearts like the normal one.
Also, Xemnas seemed to act like he still didn't have a heart. He said that "It seems your hearts have led you to obliteration. Perhaps it doesn't pay to be too loyal to one's heart. I'll have TO BE SURE AND REMEMBER THAT."
He's saying that he STILL doesn't have emotions. Which further hints that he hasn't fully tapped into all of those hearts.
So what happened after Sora and Riku "beat" him? Xemnas fully tapped into the hearts' powers and was given emotions and incredible power, including the ability to time travel.
But let's remember who Xemnas is...Terra's body and soul, who seems to be recovering his memories (as seen by him addressing Aqua's armor as friend). Now, if you suddenly lost ALL of your emotions, you probably wouldn't be a nice guy, right? But if you regained them, you'd return to normal, right? So, when Xemnas got those emotions again, his personality became much more like Terra's.
This being was no longer Xemnas, yet he wasn't truly Terra either. No, he had become something else entirely. He had NO NAME, which coincidentially is the Keyblade's name after you defeat the mysterious figure.
But where did he get all these abilities? Well, one way to learn something is to observe it. And as the Superior of Org 13, and Terra and Xehanort in the past, he observes EVERY ability that he uses as a boss in BBS:
*Fire attack = Axel (Xemnas connection)
*Wind attack = Ven (Terra connection)
*X shaped attack = Xehanort connection (or Terra connection if the Vanitas Sentiment fight with him is canon)
*Laser attack = Powered up version of Xemnas's laser attack
*Dashing back and forth = an ability of Terra (forgot the name, which is pathetic cuz I was playing as him today)
*Countdown attack = Marluxia's attack (Xemnas connection)
*Time stop attack = New ability granted by his time travel power
So, what did this No Name (NN) do first? Well, NN immediately went ahead into the future a few years. Yet even without his body, he encountered an apocalyptic world. In this world, Terra, Aqua, Ven, Sora, and Riku have all been killed. Not put to sleep or trapped, KILLED. Destroyed by Master Xehanort, who had survived as the piece of Xehanort's Heartless that was rejected out of Riku's body. It had survived, and was really just MX. So, NN tries to fight MX, but fails, because MX has already absorbed the full power of the REAL Kingdom Hearts. Barely escaping death, NN travels back to the present.
Now NN has to plan how to prevent the future. And the key lies not in the future, but in the past. He went to the past to test Terra, Aqua, and Ven. If they were able to defeat him, then perhaps together they'd be able to defeat MX in the future. And he was satisfied with each of their performances, which is why he nods at the end of every battle.
Now how does this keep TAV and Sora and Riku from dying? It doesn't. That's what the mystery game will be about (not 3D, the one confirmed to come after that and before KH3). The NN knows that changing the past could have unforeseen consequences, and decides NOT to kill MX at his birth or anything like that. For all he knows, that could somehow make Terra give into darkness and destroy all the worlds without anyone to turn to (Xehanort's presence at least gave him the sense that someone trusted him). He had to fix the problem directly, and thus will help TAV return and help all the heroes fight MX. Unless he dies somehow (which I have a feeling he might).
So, that's my take on our mysterious figure, the famous No Name. I'm sure there are some holes I haven't seen in this theory, but please comment so we can discuss this mysterious entity.