Actually, Whitebeard was the one who was supposed to fight in place of Big Mom.
Admiral Drum was supposed to be the Fleet Admiral but since Kong is still alive he is only an Admiral.
Rocky was actually meant to be a child of Akuma but changed by me because of some other reasons. So, I let him have a small personality like Akuma.
The new eight division Captains should be the children of Akuma yet because I was bored that also changed.
And, Akuma and Big Mom were supposed to be allies. But then a new idea appeared in my mind which could still go according to the next events.
Thank You!