Jimbei

"Knight of the Sea" Jimbei (海侠のジンベエ Kaikyō no Jinbē) is a whale shark fishman, the second captain of the Sun Pirates and a former Shichibukai. He is a former friend of Arlong, having once fought together until differences in opinion regarding the human race forced them to split apart. Since then Jimbei fights for the sake of all those in need regardless of their race.

Personality
Jimbei is a man who follows a strict code of honor and pride. A man of his word, he is one who always does what he feels is best depending on the situation at hand. He is even willing to become a Pirate, beings whom he hates due to human pirates selling Fishmen and Mermaids as slaves, in order to save Ace from his execution. He was good friends with Whitebeard and Ace, and deeply sympathized with Luffy after their deaths. Despite his appearance and strength, Jimbei is a kind man who is willing to do what ever it takes to help those in need.