Uchiha Itachi

Itachi Uchiha (うちはイタチ, Uchiha Itachi) was a ninja of Konohagakure's Uchiha clan that served as an Anbu Captain. He later became an international criminal after murdering his entire clan, sparing only his younger brother, Sasuke. He afterwards joined the international criminal organisation known as Akatsuki, whose activity brought him into frequent conflict with Konoha and its ninja — including Sasuke — who sought to avenge their clan by killing Itachi. Following his death, Itachi's motives were revealed to be more complicated than they seemed and that his actions were only ever in the interest of his brother and village, making him remain a loyal shinobi of Konohagakure to the very end. 

Itachi was the first child born to Mikoto and Fugaku Uchiha. His early childhood was marked with violence: when he was four years old, the Third Shinobi World War waged and he witnessed first-hand many of the war's casualties. The death and destruction he experienced at such a young age traumatised Itachi and made him a pacifist,leading to him training non-stop to achieve his dream of becoming a ninja among ninja in order to erase fighting from the world.

In one night Itachi and Tobi slaughtered the entire clan. Itachi took it upon himself to personally execute his parents. Despite his betrayal, they bore him no ill-will, instead telling him in the moments before they were killed that they were proud of him and requesting that he take care of Sasuke.^[26] Racked by grief for his actions, Itachi saw in Sasuke the only person suitable to punish him for his crimes. In order to set Sasuke on this road he cast himself as the villain, done by allowing Sasuke to find him standing over their parents' bodies and using Tsukuyomi to torment him with visions of their murders. Sasuke fled, fearing his own death, but Itachi chased him down to divulge the lie he had concocted: he killed their family to test his mettle and now wanted to test himself against the only remaining challenge to him, the little brother he had never loved. He encouraged Sasuke to become strong enough to kill him and take revenge, and to that end suggested he acquire a Mangekyō Sharingan of his own. Itachi left, but was surprised to find Sasuke already pursuing him with a newly-awakened Sharingan. Sasuke's attempt at vengeance failed and he passed out, but not before seeing Itachi cry with remorse.

                         

 He is also finally open and honest with Sasuke during their final meeting, admitting what he did and even sharing information Sasuke did not already know. He apologises to Sasuke for failing in his responsibilities as an older brother, wondering if being up front with Sasuke from the beginning might have allowed them to avoid the Uchiha's destruction. In their final moments together, Itachi tells Sasuke he does not need forgiveness and that he will always love him no matter what.