Zabuza Momochi (桃地再不斬)

Momochi, Zabuza was born in Kirigakure. During one of Kirigakure's annual events of pitting graduating ninja against each other, Zabuza singlehandedly killed all of his peers, bringing an end to the ritual and causing him to be called the "Demon of the Hidden Mist". Zabuza would go on to become one of the Seven Shinobi Swordsmen of the Mist where he acquired his zanbatō, and also became a member of the Kirigakure ANBU. At some point in time, Zabuza found a young boy named Haku wandering the countryside, and offered to take Haku in as his tool. Haku accepted and became loyal to Zabuza, learning from Zabuza and protecting him whenever necessary. Zabuza eventually attempted a coup d'état on the Land of Water by trying to assassinate the Mizukage. The coup failed, forcing Zabuza and his subordinates to leave the country. In the hopes of gaining funds for a second coup, Zabuza became a hired assassin, killing anyone if the price was right.



Shinobi World War Arc

In preparation for the Fourth Shinobi World War, Zabuza is resurrected by Kabuto Yakushi to fight against the Allied Shinobi Forces, before being mobilised alongside Haku, Gari, Pakura and Toroi. Overhearing Zabuza as he told Haku that they were no longer in the afterlife, Gari informs them of their current situation, infuriating Zabuza because he didn't want to obey someone who would stoop so low as to use the dead. Ambushed by the Surprise Attack Division, Haku protects them both from the explosive tags carried by Sai's ink birds, but Zabuza calls it unnecessary once he observes the others regenerating. This irritates Zabuza further, who remarks that not only were they brought back, they were also made impossible to kill. Stating that he was the only one amongst his group to not possess a Kekkai Genkai, Zabuza storms the recently grounded opposition but is intercepted by Kakashi, whom he didn't expect to fight again. Greeting Sakura and noting her growth since they last met, Zabuza enquires about Naruto, learning from Kakashi how famous he had become since his death.
As Kabuto erases their consciousness, Zabuza pleads with Kakashi to stop him no matter what it took, as his humanity was already dead. Enveloping the battlefield in a thick mist, Zabuza then assualts the Third Division, until he is confronted by Kakashi. Amidst the battle, the previous generation of the Seven Ninja Swordsmen of the Mist are summoned to the field in order for Akatsuki to retain the upper hand, with Zabuza soon joining them whilst wielding his broken Kubikiribōchō.
In the end of the fight Zabuza is captured by Ensui Nara and sealed by Maki.