Shinnō

Shinnou was the main villain in Naruto Shippūden 2: Bonds. He was the sensei of Amaru. When first introduced he and Amaru came to Konoha to get help for there village and when they got there they found the village in ruins. When Amaru accidentally set of a trap, Shinnou apparently died saving her. Soon later it was revealed he survived (by unknown means) and has been researching the power of darkness for 15 years and plans to use it to conquer the world.