Sasuke Uchiha

Personality
When first introduced during his assignment to Team 7, Sasuke displays a great indifference to his teammates. Feeling that his abilities are far superior to their own, he is unwilling to cooperate with Naruto Uzumaki or Sakura Haruno, as doing so would do nothing to help him kill Itachi. These perceptions are quickly proven wrong, for despite their failings, Sakura is an excellent source of information; while competition with Naruto acts as an effective way to get stronger. While he retains a confidence in himself throughout the series, Sasuke increasingly relies on his friends over the course of Part I. As he starts to get close to others he also begins to risk his own life to save them, even though his death would leave him unable to fulfill his goal of vengeance upon Itachi.

Although Sasuke becomes content with a life of happiness in Konohagakure, he never allows his ambition to gain power to leave his thoughts. During his Part I battles with characters such as Haku and Gaara, Sasuke tests his abilities against those of progressively stronger ninja, in the process discovering the weakpoints he needs to overcome. While initially complacent with his development, Naruto quickly starts to grow stronger at a faster rate. This, coupled with his quick defeat by Itachi during a brief return to Konoha, leads Sasuke to believe that his growth is slowing. In an attempt to reassess his strength, he begins to treat his friends as opponents so as to test his abilities against their own.

Abilities
Sasuke has always been able to grasp most ninja abilities with ease. When Naruto begins Sasuke is highly proficient with the Uchiha clan's signature fire-breathing and weapon-based techniques, talents he continues to hone throughout the series. Of the abilities gained through his Uchiha lineage, Sasuke most commonly uses the Sharingan, an ability manifested through the eyes, that grants him a variety of advantages. Sasuke's Sharingan develops for the duration of Part I, first only allowing him to track fast-moving objects and culminating with his ability to predict the movements of others. In Part II he starts to use his Sharingan to cast illusions, allowing him to manipulate and confuse others. Sasuke's Sharingan reaches its peak after Itachi's death; through the death of the person closest to him, Sasuke awakens his own Mangekyo Sharingan, granting him his brother's Amaterasu fire technique as well as the ability to dispel it.

Orochimaru's influence is also a recurring element of Sasuke's abilities. During their first encounter in Part I, Sasuke is branded with a cursed seal, which grants him a brief surge in strength and speed when active. Sasuke's various uses of the seal cause him to crave more of its power as he enters to a second level amplifying the effect and drastically changing his appearance. Itachi removes Orochimaru and the cursed seal from Sasuke's body during their final battle. When Sasuke begins to train under Orochimaru, his physical abilities are greatly enhanced and he learns how to summon snakes so as to help him in battle. In addition to the techniques taught to him, Sasuke gains access to some of Orochimaru's more common abilities during the period he absorbs him into his body; Sasuke is able to recover from injuries in short periods of time and can regurgitate new bodies for himself.

Prior to Sasuke's defection, his teacher, Kakashi Hatake teaches him how to use the Chidori, a collection of lightning-based chakra in his hand that serves as a rapid thrusting attack that severely damages any target. While Sasuke is able to use the Chidori twice per day during Part I, his usage of the attack in Part II is unknown. Instead, Sasuke employs variants of the technique, using the fundamentals behind the Chidori to create a number of new abilities. Sasuke's first display of such an ability involves emitting electricity from his body as a shield and then sending it along the blade of his chokutō to increase its cutting potential. He later proves able to mold electricity into more solid forms such as extendable swords, and even harnesses natural lightning to use it as an attack named Kirin (麒麟, Qilin?).

Detail Info
First appearance Naruto manga chapter 3, Naruto anime episode 1
Age 12-13 in Part I, 16 in Part II
Date of birth July 23
Notable relatives Itachi Uchiha (brother, deceased)
Ninja rank Rogue ninja
Ninja team Hawk