Sai is introduced during Part II of the series as Sasuke Uchiha's replacement in Team 7. Having been a member of Root since he was a child, Sai has been trained to not possess or desire any type of emotion or camaraderie. After spending time with Naruto Uzumaki, however, he begins to crave bonds with other people, which has since become his primary role in the series. Sai's attempts to form bonds involve giving pet names to others; however, he often says what he actually thinks of a person, resulting with him choosing names such as "fatso" and "ugly". He eventually learns from his mistakes and attempts the opposite approach, for instance, calling Ino Yamanaka "Ms. Beautiful". When not making an attempt to bond with others, Sai spends his time painting and drawing, and has produced thousands of works. His artistic talents extend to his choice of attacks in battles: anything he paints on a scroll that he carries with him, most commonly animals, comes to life.Sai's seiyū is Satoshi Hino in the Naruto: Shippūden anime.
I want to collect some sai cosplay photos ! Love it!