Akainu is one of the most important antagonists in One Piece and someone who has been getting quite a lot of attention, all thanks to Oda's recent comments about him. As fans know, Akainu serves as the Fleet Admiral of the Navy right now, but even aside from that, he was always going to be extremely important. He's been involved in some of the most crucial events in One Piece, which include things such as the Ohara Incident and, of course, more importantly, the Summit War, which shook the entire world from top to bottom.