Itachi

One of a baddest ninjas on Naruto. He is a older brother of Sasuke Uchiha, once a prodigy of the Uchiha Clan who rose in ninja ranks at early age. He friggin killed his own clan for some unknown reasons, probably to motivate his envious brother to grow stronger and be a threat to his awesomeness. He left Konoha and join an criminal organization Akatsuki. He's partners with S-Criminal of Water Country Kisame Hoshigake. His ninja skills are cool, with his sharighan, he can copy ninjutsu, taijutsu, and genjustu and send it back to his opponents. With his Mangekyo Sharigan, He can send his foes to a illusionary world and torture them for 72 years, mentally crippled Sasuke and Kakashi. With his sharighan, He could be God-like Invisible Ninja.