My Blackbeard theory: The Man of Two Worlds

This theory covers the idea that perhaps the reason why Blackbeard has such a special constitution and can house multiple souls comes from him having control over his abyss form that we’ve been introduced to in Elbaf with Domi Reversi.

Domi Reversi appears to create a distinction between somebody’s real self and the demonic presence that takes over them. What if these aren't simply the same person, but two different entities that can exist across the human world and the abyss?

So you could say they kind of exist as 2 different entities, your evil, almost primal side and your good side, which I believe live separately in the abyss and the real world.

So when you get Domi Reversi'd, my belief is that your abyss/evil side comes to the human world, making it function as almost like a swap between your human side, which would now be living in the abyss.

So, linking this to Blackbeard:

Maybe what makes him so dangerous is that with his darkness fruit, or a special born constitution, or maybe even a mix of both, he can actually take control of the power of his evil/abyss form and house multiple entities inside his body.

So because Blackbeard has somehow gained control over his abyssal entity, he may effectively exist as two connected entities rather than a single individual, which could be what allows him to possess multiple devil fruits.

One devil fruit could belong to the entity existing in the abyss, while another belongs to the entity existing in the human world. And maybe through the combination of his unusual constitution and the darkness fruit, Blackbeard has expanded that amount to 3.

This could also explain 2 things: Why Blackbeard never sleeps, and why he covered himself in Marineford when eating the tremor fruit.

Why Blackbeard never sleeps could now be explained with his human self being conscious in the human world, however when his physical self should be resting, his abyssal entity remains active, so because blackbeard's consciousness is effectively never completely inactive, he is perceived as a man who never sleeps.

Why he covered himself in Marineford could also now be explained with him needing to bring out his abyss version into reality to absorb whitebeard’s fruit into this “other entity” that he has control over.


So imagine a world where imu tries to Domi Reversi Blackbeard, but it actually just doesn't work because Blackbeard is already in control of his evil/abyss form?

Imu would basically be trying to bring out the monster in Blackbeard, but it turns out that Blackbeard has already made that monster part of himself.

And funnily enough, we've already seen Domi Reversi apparently fail against Luffy and Loki in chapter 1178, the reason for that remains unclear, but it supports the idea that certain people or powers can resist the process.

This is where my idea of the "Two Worlds" comes in, I believe that if Blackbeard becomes the final villain, the only way to truly defeat him would be to get rid of all of the housed entities in his body, which would be his main self, his abyss/evil version of himself and then possibly any other power/entities he might absorb in the near future (or maybe already has access to).

And this is where it gets interesting because Oda himself said that something similar to the tot musica monster exists in the real one piece world as we saw in the film red movie.

What if there is a fight against Blackbeard in an abyss reality and the real world reality to defeat his human and abyss version because he has control over both of them? Kinda like there were 2 different realities/fights against the tot musica monster in film red?