Sasuke Uchiha
Uchiha Sasuke (サスケ Sasuke) is a fictional character in the manga and anime Naruto. Haruno Sakura has a crush on him.
A Genin level Ninja, Sasuke is the natural genius offspring of the powerful Uchiha Clan. One of the most outstanding clans in Konohagakure, the Uchiha's advanced possess the power of the Sharingan. Sasuke's talent is not only confined to the Sharingan; before this ability even awakened he was considered the #1 Academy Ninja and the #1 rookie Genin. It is because of these abilities that Orochimaru is interested in Sasuke and puts his curse seal on him; Sasuke turns out to be strong enough to survive the nine out of ten chance of immediate death and regains consciousness. Just by releasing Chakra the curse becomes active and forcibly pulls out more Chakra, stealing his mind. At this point the small mark on the neck grows to wrap around Sasuke's whole body. Sasuke's willpower is surprisingly strong enough to hold back this curse and after Hatake Kakashi, the ninja who is assigned to train him, performs his Evil Sealing Method on him, it becomes even easier for him to control it and use his Chakra normally.
Sasuke thinks of himself as an avenger; his only goal is to achieve power and be able to kill his brother, Itachi. He is even-minded and a bit arrogant, but has an inner coward he must still overcome.