"Ocean Blade" Zephyr is a blue shark fishman, the former pupil of Hordy and Jimbei, and he promised Cool that he would join his crew when he makes one. After 5 years he joined the Kakumei pirates and is the vice captain and the first mate. He is first shown in the fight against Cool, 5 years before the timeskip. In this fight he has shown that he can master the Fishman Jujutsu. He was everyday training Fishman karate and Jujutsu and he wants to become one day a master of Fishman Jujutsu.