Gokai

is a pirate from the Funato Clan.

Abilities
Like many soldiers in the Funato Clan, he has capable skill in Water Release, able to imprison people in it.

Great Sea Battle of Kirigakure Arc
Gokai had joined Funamushi's elite squad of Funato soldiers to attack Kirigakure while the rest of the clan would distract the Mizukage's forces at sea. As Gokai and the elite squad headed to a nearby village for supplies, a Funato scout informed Funamushi that the bridges ahead had been cut down.

Later, after clashing with a group of shinobi led by Kagura Karatachi, Gokai suggested to Funamushi not to pursue them due to them having a home advantage at the village. Funamushi choked him in response, unwilling to let an opportunity to avenge Seiren slip by.

Trivia

 * Depending on the kanji, gokai can have different meanings, which seem to apply to the character:
 * Written as 誤解, it means "misunderstanding", relating to his rejected suggestion of not pursuing Kagura's group.
 * Written as 五戒, it refers to the "Five Precepts", a Buddhism term for basic ethics and morality, which as a pirate, Gokai wouldn't not follow.
 * Written as 沙蚕 or 砂蚕, it refers to a type of worm, similar to his superior Funamushi's name.