As far as the narrative shows us, Imu is the most pedestal-almighty character. Gorosei that are titled "Warrior God" (a far more extravagant title than Holy Knights) basically state and devote to Imu as the almighty creator of the world (or maybe civilization, whatever). Whatever strangeness BB has like his weird body and ability to consume 2 DFs and nullify DF powers by touch is imo unique and strong. But powerscaling-wise he doesn't hold a candle to Imu's narrative a literal deity of the world. If BB and Luffy are chosen ones then Imu is simply the god, the One who choose anything at his whim.
So, i think the only chance BB have to be the final villain is if:
- Imu choose BB as his vessel or something.
- BB manage to convince and manipulate Imu into actually giving away his power to BB. Like Joker manipulating Mr. Myzlptx and transforming into Emperor Joker. Less likely imo, its like no way Imu will deliberately give his power to someone else.
- BB use a certain mythical items that serve as a threat at Imu's weakness, for example by Ope2 no Mi's (Reverse Immortality Operation) or something. Making Imu vulnerable in some aspect, and kill him by other top secret artifact exploiting mortal weakness. The writing required for this to make sense is a great challenge tho. But if managed properly, its gun be gud.
So, i think the only chance BB have to be the final villain is if:
- Imu choose BB as his vessel or something.
- BB manage to convince and manipulate Imu into actually giving away his power to BB. Like Joker manipulating Mr. Myzlptx and transforming into Emperor Joker. Less likely imo, its like no way Imu will deliberately give his power to someone else.
- BB use a certain mythical items that serve as a threat at Imu's weakness, for example by Ope2 no Mi's (Reverse Immortality Operation) or something. Making Imu vulnerable in some aspect, and kill him by other top secret artifact exploiting mortal weakness. The writing required for this to make sense is a great challenge tho. But if managed properly, its gun be gud.
There‘s nothing mystical or divine about Imu being called Creator.
All the original twenty are Creators. They didn’t actually create the world, just the World Government.
Blackbeard having two DFs is more unique than Imu being immortal. We have the explanation to explain Imu- the Op Op fruit. Anyone can become like Imu, as long as the user is willing to give up their lives to do the operation. Anybody else does what Blackbeard did, they would die.