Pain

He is the leader of the Akatsuki, the criminal organization in search for Tailed Beasts. The hint to his enigmatic identity is the Rinnegan appearing in his pupil. Proclaiming that "pain" has given him the power, he leads Akatsuki with his divine charisma and invulnerable strength.

Not much is known about the Rinnegan, and its correlation to Pain's abilities, such as the six bodies of Pain sharing one consciousness, which is called the Six Paths of Pain. They are immortal, with each having unique abilities and black swords that disrupt chakra.

His scheme started from the revolt in the Hidden Rain Village a few years ago, where he extinguished the entire clan of the legendary ninja, Hanzo.

With Akatsuki under his command, his goal is to collect all Tailed Beasts and create an ultimate weapon which he believes will bring an end to all wars.