Naruto

Name : Yamato
1st Appearance : Chapter 284
Rank : Jonin, ANBU
Current affiliation : Konohagakure (Hidden Leaf)
Current Team : Captain of Team 7 (Uzumaki Naruto, Haruno Sakura, Sai)
Previous Team : He has stated in Chapter 298, he was teamed up with Hatake Kakashi in the ANBU.

One of the more talented members of the ANBU, Yamato is Hatake Kakashi's replacement as the leader of Team Kakashi while Kakashi is recovering from a previous mission. Because the mission team Kakashi will be going on isn't an ANBU mission, he is forbidden to wear his mask and has been assigned the codename 'Yamato'; his real name is unknown. Yamato was chosen as the leader of Team Kakashi because according to the Fifth Hokage, he had the best performance record in ANBU while serving under the Third Hokage. He seems to have great respect for Kakashi, and even worked with him while Kakashi was in ANBU.

Yamato is able to use Mokuton Ninjutsu, which was previously thought to only be used by the First Hokage. It turns out that Yamato's abilities stem from an experiment done on him and 59 other children by Orochimaru. In this experiment, the DNA of the First Hokage was forced into the children in an attempt to give them the First's ability in Mokuton jutsu, as well as an unquantified ability to "control biju" (which the First himself apparently also possessed). Yamato is the only one of the children who survived.

Yamato is able to perform a jutsu that forcibly reverses a biju transformation, and has used it on Naruto once.