Zabuza Momochi

Zabuza was a member of the Seven Ninja Swordsman Of The Mist, an organisation consisting of only the greatest blade wielding shinobi of their generation that the Hidden Mist Village can produce.

I looooove how Zabuza turned out! He was always one of the best enemies in Naruto, and considering he was the first MAJOR enemy, besides Mizuki of course.