Who do you believe are the final antagonists?
- We could go the basic path and say that since blackbeard is presented like other protagonist in others stories (in term of presentation, the way he creates his plan, the way he shapes the protagonists etc..) Blackbeard is a good candidate.
- We could also go deeper and look at the thematic of the story that is freedom and look at the main antagonist that could threaten the freedom of the protagonist. This would therefore be Imu since blackbeard is the incarnation of Chaos.
- But blackbeard also possess the ability to nullify the entire freedom that the fruit of Luffy possess those I don't really see how a fight between the two cannot happen..
- We also know that Luffy do not act alone and that there is a gigantic thematic of the world helping Luffy against the main threat.
So if I was completely crazy, I would say that the last antagonist will be the fusion between blackbeard and Imu but I don't really see how this could happen.
But my final guess is that Black Beard will take something so precious to Luffy and Imu and so threatenning to the world that Luffy will have to fight it and the end.. and Imu will be facing the entire world (strawhats included).