Zabuza Momochi

Zabuza Momochi was the first major villain from the manga and anime series Naruto . He first seen on Episode 6 of Naruto. He appears after his giant sword barely misses decapitating Naruto and co. He appears standing on the hilt with the blade stuck in the bark of a tree.

History
Zabuza was a highly skilled assassin and is a rogue ninja from the Village Hidden in the Mist (at the time called Blood Mist Village). Zabuza, as a child joined the academy of the Hidden Mist Village, which was trying to make perfect ninja by starting a new method of taking away feelings. During graduation, all students were ordered to kill each other. Zabuza killed all the students and when he lost it, he continued to kill people in the village and ninja protecting it. He failed to kill the Mizukage and left the village, but later returned to assassinate the Mizukage. Before leaving the village he met and trained Haku. He also left to do a job for the 7 Swordsmen of the Hidden Mist. Zabuza was named demon of the Hidden Mist. He was tailed by trackers by the Hidden Mist Village, and hid in the shadow of a gangster named Goto.