Zabuza Momochi, "The Demon" was an assassin hired by the multi-millionaire/crime boss Gato. Zabuza's job was to kill the bridge maker Tazuna, whom happened to be guarded by Kakashi and team Seven. Zabuza first appeared to attempt his assassination right after Kakashi and co. had done away with the Brothers of the Mist. The ensuing fight between Zabuza and Kakashi was rather long and involved everyone doing something to help fight off the demon. Sakura guarded Tazuna as Kakashi fought him out on a lake. Naruto and Sasuke were busy dealing with one of Zabuza's Shadow Clones.
Haku and Zabuza
Team 7 didn't realize how much trouble they were in until Kakashi was trapped in Zabuza's water prison technique. Naruto and Sasuke had to develop an elaborate plan involving transformation techniques and diversions, ultimately Zabuza had to release his water prison technique, and the tables turned once more. When Kakashi was finally ready to kill Zabuza, a mysterious masked figure finished the job before him. The figure took Zabuza with him and Kakashi noted that he must have been a tracker ninja for the Mist village. After all, Zabuza was wanted in his home city.
After a lengthy battle with Kakashi, Naruto, Sasuke, and Sakura. Zabuza is defeated by Kakashi with a chidori. Zabuza and Haku are both killed but before he dies Zabuza shows that he really did care for Haku and not just himself. Zabuza then in an emotional scene gives Naruto advice about being a true ninja.
Forming the Hand signs for a deadly jutsu
Over his recovering weeks Kakashi deduces that this tracker ninja is just an impostor and is actually in all of this to help Zabuza.
After having everyone train, Kakashi and co. (save Naruto) head off to the bridge that Tazuna was supposed to finish and, to Kakashi's deductions, Zabuza and the mysterious tracker ninja, revealed as Haku, were awaiting them. Sasuke took on Haku and Kakashi took on Zabuza. The fight raged on for hours and people eventually both Naruto and Sasuke were trapped inside one of Haku's many deadly Jutsu, a huge room of ice mirrors that he used a kekkai genkai within so that he could teleport form mirror to mirror at extreme speeds, beating them down in the process. Meanwhile, Zabuza was hiding in his mist and attacking silently and swiftly, quite a feat with a sword if that size on his back.
Zabuza is later resurrected by Obito along with Haku and the original seven swordsman. He does not wish to be resurrected and tells Kakashi to kill him. Before Killing Zabuza Kakashi admits that it was infact Zabuza who made Naruto into the ninja he is today. Kakashi successfully fights and defeats Zabuza and Haku back to rest.
Zabuza and his enormous sword
Zabuza is a real killer, who kills anyone in his way. He fought Kakashi almost killing him but eventually lost. Zabuza is from the Kirigakure village other wise known as the Village Hidden in the Mist. When Naruto was born he was soon a killer assassin for a boss named Gato. He also had a assistant named Haku. He wants to kill Gato, Tazuna, and especially Kakashi. After the time when Haku dies Zabuza allows himself to get killed. He is a member of the seven shinobi swordsman. In the Japanese language Zabuza Momochi means "One who doesn't strike twice."
Zabuza Momochi other wise known as the Demon Hidden in the Mist. He is a human, he is a male. He is 26 years old born on August, 15. His eyes are brown, his hair also is brown. His height is 6'0' and he weighs 159 lbs. His blood is a type A. Even though he is a jounin he is an elite. He is one of the Seven Swordsman of Shinobi.
Zabuza found Haku on the street and he asked him if he wanted to come with him. After Haku said yes they headed out of the village, there they ran into KImimaru when he was a kid. Kimimaro asked if they were from the village hidden in the mist and they said no.
When Naruto and the others were on the mission to protect the builder Naruto started to throw his kunai everywhere and he would have hit someone. (Zabuza or Haku) But they used a substitution jutsu to make it look like he was trying to kill a rabbit. Kakashi knew something weird was going on so he kept an eye out.
"Hidden Mist" where he creates thick fog in his surrounding area.
"Water Clone" where he creates a copy of himself out of water.
"Water Dragon Missile" where he creates a powerful jet of water shaped like a dragon.
"Water Prison" where he traps the opponent in a large ball of water.
"Giant Vortex" where he sends a very large volume of spiraling water towards his opponent.
He was also an expert with "Silent Killing," making noiseless movements and finding his targets by hearing alone.
Also possesses the "Kubikiribocho," a large sword that can restore any chip, crack, or break by absorbing the iron in blood. Zabuzas power level is 30.5 almost equal to Kakashi 34.5 at the time.