Yamanaka Sai

Sai (サイ) is an ANBU-level shinobi of Konohagakure and is from the disbanded faction: Root. He later became a major supporting characters of the series, and is a member of Team Kakashi, having to replace Uchiha Sasuke.

Knownable Relatives

 * Shin (Adopted Older Brother/dead)
 * Uzumaki Naruto (Best Friend/Teammate)
 * Haruno Sakura (Friend/Teammate)
 * Uchiha Sasuke (Friend/Teammate)
 * Hatake Kakashi (Sensei/Friend)

Voice Actors
all information on Sai came from http://naruto.wikia.com/wiki/Sai
 * Japanese : Satoshi Hino
 * English : Benjamin Diskin