Jinbei is a whale shark fish-man and a powerful master of Fish-Man Karate. His dream is to fulfill his former captain Fisher Tiger’s dying wish of coexistence and equality between humans and fish-men. He was a member of the Sun Pirates, eventually becoming its second captain after the death of their original captain, Tiger. He eventually became one of the Seven Warlords of the Sea, though he resigned during the Summit War of Marineford.

Prior to and amidst said war, Jinbei befriended Luffy, and two years later allied with him and his crew to prevent the New Fish-Man Pirates’ coup d’état against the Ryugu Kingdom’s Neptune Royal Family.

Now, Jinbei is an official member of the Straw Hats. One Piece fans are probably wondering who Jinbei’s final opponent will be? I think Aramaki will be his final opponent. Here is why?

We can see Luffy will fight against Akainu (Leaders and both use fire kind powers), Zoro will fight against Fujitora (Both are swordsmans and honorable fighters), Sanji will fight Kizaru (Speed based fight and both are related to science). Now, we have Aramaki left.

Also, Aramaki’s character theme of oppression and stuff. I think Jinbei is the perfect Straw Hat to prove him that his view is wrong because of the fish folks past with oppression.

Aramaki states in Chapter 1054: My logia is nature incarnate! A source of life that rivals the seas! (Scans)/ The forrest is just as much the cradle of life as the sea! (Official translation). This could be a foreshadowing for a fight with the First Son of the Sea.

Could be an interesting fight given the fact that Aramaki can absorb liquid while Jinbei fights partially with water. So either Aramaki takes Jinbei the possibility to fight with water or maybe he uses more water than Aramaki can absorb.

Theory by NicoNicoNotNii (https://www.reddit.com/user/NicoNicoNotNii)