Hatchan

Hacchan is a six-armed octopus fishman. Years prior to the story, Hacchan was good friends with Chew and Kuroobi while they served in the Sun Pirates. After the Sun Pirates was disbanded, he joined the Arlong pirates to serve as a caretaker to Mohmoo, the giant sea cow. At the Cocoyashi village Arlong Park, Hacchan dueled with Pirate Hunter Roronoa Zoro and lost after a grueling fight. He now serves as owner of the Takoyaki 8 food stall ship.

Role in Games
In One Piece: Pirate Warriors 2, Hacchan fights for the Arlong-Crocodile Pirate alliance never knowing he's been manipulated by Perona. Nami persuades him not to fight. Sometime later, Hacchan is put under the Frendy Dial mind control by Marshall D. Teach. He fights at Baratie and is soon snapped out.

Fighting Style
Hacchan fights with his own fighting style called Rokutoryu. He can use six swords with this style and squirt out ink to blind his opponents.