This is probably poorly organized but what the heck. Spoilers
obviously, mainly pertaining to X and its variations though it also deals with Master Xehanort's plans, which is more of a BBS/3D thing. Also refers to the second secret ending of the Re:coded cinematic in 2.5, but that's the only interesting thing about that story so I don't feel bad if I spoil that.
So if Master Xehanort’s Keyblade is “the most ancient Keyblade in existence”, then the most logical assumption is that it was made by the Master of Masters, right? As far as we know he was the first wielder, given how early in the timeline X is and that’s when Keyblades really took off. It would also explain its similarities to the Foretellers’ Keyblades.
And I think we were all pretty surprised to find out that the guy in the black coat talking to the Foretellers is the Master of Masters. I was sure he was the mysterious Sixth Apprentice.
And that’s a weird point too: If the Master of Masters gave new names and Tomes of Prophecies to five of his apprentices, it’s really strange that he didn’t do that for the sixth.
But you know…that Keyblade is heavily associated with someone who likes putting his heart into other people to possess them. And the story of the Foretellers seems to parallel Ansem and his apprentices, which ended with one of them assuming his identity. Except, maybe this time, that happened in reverse?
I wonder if, after giving Tomes and new names to the Foretellers, the Master of Master possessed his final apprentice. This Keyblade might’ve always been used for obtaining new vessels–this could be the “will that has been passed down.”
Related to that, I’ve also been wondering what all powers a Master of Masters might have. Keyblade Masters are able to control hearts. Would a Master of Masters’ powers be a logical extension of that? My first thought on how that might work would be that a Master can control their own heart, but a Master of Masters can also control the hearts of others. Of course, we’ve already been told that regular Masters can control the hearts of others…but as far as I recall, the only one we’ve seen do that is Xehanort. The guy who has the Keyblade that probably belonged to the Master of Masters. So, maybe?
Anyway there are a few different ways I think this could go:
-One possibility is that the Master of Masters is going to end up being the True Villain, and Xehanort has been possessed by him for a while now. This is a twist Kingdom Hearts is rather fond of, and it would fit well with Young Xehanort’s apathy and insistence that getting that Keyblade is what will direct his destiny, plus the Master of Master’s future-seeing ability would go a long way towards explaining how crazy-prepared Xehanort is. Kind of hoping this isn’t the case though. #stopretconningXehanortsidentity
-Maybe the Master of Masters is still out there somewhere, and he’ll end up being the villain of the next saga? Xehanort might’ve just learned about the Keyblade and what it was used for through his research. Now, if the Keyblade is tied to vessel-making, then it may not be likely he’s still body-jumping now that Xehanort has it, but there are other ways he could still be around. Perhaps he has also become Unchained, whatever that means.
-Or, maybe the Master of Masters was killed long before the Xehanort Saga and Xehanort is just using him as inspiration.
I’m not entirely sure how it’s all going to go down, but I’m positive that Keyblade belonged to the Master of Masters, and I’m very eager to see just what that connection might mean.