Yamato

Yamato is first added to Team 7 as a temporary replacement for Kakashi Hatake, though has since come to be a recurring member of the team.
Although "Yamato" is a code name given to him for
the purposes of joining Team 7, he seems to prefer
it over his real name, Tenzo. Kakashi, having served
with Yamato in the past, is in the habit of calling him
Tenzo. Yamato is a member of the ANBU, and
although he usually projects a calm, stoic demeanor
like other ANBU, he can be quite laid back when
not on duty, and is not above using his Mokuton
techniques for material comforts such as making a house to "camp out" in.

 

Yamato was kidnapped as a child by Orochimaru and injected with the First Hokage's DNA in an attempt to replicate the First's abilities. Orochimaru was forced to abandon Yamato before he could complete his research, and thus never knew that Yamato had survived the experiment and was able to use the First's Mokuton techniques. With the ability, Yamato is able to use and combine water and earth to create wood for varying purposes, such as creating wooden copies of himself or erecting wooden barriers instantaneously. He is also able to suppress the Nine-Tailed Demon Fox's influence over Naruto Uzumaki, which is the primary reason he is assigned to Team 7.