Dead set on killing his brother Itachi to avenge his clan. Doesn't use honorifics, often calls Naruto names such as "idiot," "loser," "dobe," or "usuratonkachi," as a way of covering up his true feelings for him. Cold and distant to anyone besides Naruto. Orphan, no guardians, clan was massacred, often uses his sharingan while training, threatened, or wants something, learned the chidori from Kakashi. Hates when girls flirt with him. Dislikes Sakura and Ino. Hates fangirls. Soft spot for Naruto.