Shin Uchiha (うちはシン, Uchiha Shin) is a former test subject of Orochimaru. After developing a fixation on theUchiha clan and more specifically, Itachi Uchiha, Shin took the Uchiha name for himself and left Orochimaru, taking his "sons" with him. Believing that peace was detrimental to human evolution, Shin began a plot to revive the Akatsuki so that the ensuing conflict would be a catalyst to further human evolution.