Mizukage

The is the leader of Kirigakure. As the official head shinobi of the Hidden Mist Village, his word holds sway over all political and militaristic issues that present themselves regarding Kirigakure and its villagers. The only known Mizukage so far is Madara Uchiha, although it is unknown when he was Mizukage and how many Mizukage came before him and after him, if any. Zabuza Momochi once staged a failed coup d'état against a Mizukage, although it isn't known whether or not this was Madara or another Mizukage.