Also known as "The Demon of the Hidden Mist", Zabuza Momochi was a rogue ninja from the Hidden Mist Village and a former member of the 7 Ninja Swordsmen of the Mist. Zabuza wielded the Executioner's Blade and used the Hidden Mist Jutsu so effectively that he became renowned for his signature Sillent Killing technique.
Despite its simple appearance, the Executioner's Blade is an extremely deadly and frightening weapon. Capable of cutting down multiple opponents with ease, it can repair any damage dealt to it by absorbing the iron in the blood of those it cuts down.
Zabuza is also the only known member of the 7 Ninja Swordmen to be a part of 2 generations of the group. Zabuza's 1st group consisted of himself, Kushimaru Kuriarare, Ameyuri Ringo, Jinpachi Munachi, Jinin Akebino, Fuguki Suikazan & Mangetsu Hozuki. The 2nd group consisted of himself, Kisame Hoshigaki, Chojuro & Raiga Kurosuki, and it is likely that these were the only members of the 2nd group.