Itachi Uchiha (うちは イタチ, Uchiha Itachi) is a former ninja of Konohagakure, the older brother of Sasuke Uchiha, and the partner of Kisame Hoshigaki. Though having spent his early youth as the prodigy of the Uchiha clan, Itachi is treated as a villain for much of the series.. Sasuke's Aloof Big Brother is the Akatsuki member with the most screen time to date (not сonsidering Tobi). He was believed to have killed his closest friend in order to gain the Mangekyo Sharingan, a more advanced form of the Sharingan with several unique abilities. He then proceeded to kill the entire Uchiha clan save Sasuke for reasons of his own, then abandoned the village to join.
Itachi joined Akatsuki in order to keep an eye on the organization, along with Madara Uchiha, in case either ever acted against Konoha, all the while planning for his death at Sasuke's hands. While a member of Akatsuki, Itachi was approached by Orochimaru, who tried to steal his body to gain the Sharingan.. Namely, in this article, you are going to find out the real truth behind Itachi's decision to join the Akatsuki criminal organization. After massacring his whole clan save for Sasuke, Itachi Uchiha left Konohakagure and joined the Akatsuki criminal organization, at the time led by Pain (Nagato).