Fisher Tiger

Fisher Tiger, known as the Adventurer, is the original leader of the Sunny Pirates. Several years ago before the current storyline, he climbed up the cliffs of the Red Line with his bare hands to Mariejois. He attacked the holy land to free the Fishmen slaves there from the Tenryuubito. While he hated humans, Tiger did not discriminate when it came to slaves. He freed slaves of all races there. Among these other slaves were Boa Hancock and her two sisters.

With the Fishmen slaves he freed, Tiger changed the shameful hoof mark branded on them (it signified slavery) into a symbol of sun. He also took them in. With them, he created the Sunny Pirates.

At some point in time, Fisher Tiger somehow died and his command of the Sunny Pirates was given to Jinbei.

Trivia

 * Fisher Tiger is so far the only Fishman to have a surname.
 * Based on his name, it may be implied that he is a tiger shark Fishman.