Sasuke Uchiha

Background
Sasuke Uchiha became a Genin at the age of 12, which is a very late age in the opinion of most higher-ups. But regardless, he is a genius Shinobi who originated from the Uchiha Clan. The Uchiha Clan was once one of the most powerful clans in the leaf village. Their strongest member was no one but Itachi Uchiha, Sasuke's older brother. For this reason, Sasuke has always lived in the shadow casted by his brother. Itachi's natural abilities allowed him to be Sasuke's goal; Overcoming Itachi! With the utter obsession of Sasuke's father with Itachi's skill, Sasuke always envied Itachi. Sasuke's father also urged Sasuke to follow in his big brother's footsteps, something he chose not to do. At the age of 8 Sasuke's nightmare began!

Death of the Clan
The Uchiha clan was always kept in control and in observation by the rest of the village because of their power. Years of being part of the clan, and they'd just figured this out... They were angered and played along just to give the entire village a Coup D'etat, or overthrow of the Village. Sasuke's father, Fugaku, was leader of this operation, but kept it a secret from his sons. He after coming up with a plan, asked for Itachi's assistance, revealing to him his plan. At this moment, Itachi was forced to choose between the clan or the village! He chose the Village! Itachi, in a single night killed every living member of the great and powerful Uchiha Clan, leaving only his little brother alive. Sasuke didn't know what his brother had done, or why? All he knew is that wanted to live for one sole purpose, TO AVENGE HIS CLAN!