8. Uesugi Kenshin
Known as the Dragon of Echigo, Kenshin was a fierce warrior and the leader of Nagao clan. He was famous for his rivalry with Takeda Shingen. The two fought each other for many years, engaging in one-on-one combats several times. He was also one of the warlords who resisted the campaigns of Oda Nobunaga. He was a reputed administrator as well. There are various stories surrounding the cause of his death.