Sasuke always wanted to fight Naruto to prove that he's better than him, because he had this jealousy burning inside him because of Naruto. He hated standing in Naruto's shadow He had dark black hair, pale skin, and dark eyes with Sharingan. He was from the Uchiha clan that was slaughtered by Itachi, leaving Sasuke and Itachi the last Uchihas alive. Sasuke needed revenge, conversations about his clan and his brother triggered this anger inside him, as well as Naruto