Matsunaga Hisahide is famous as a dirty SAMURAI who served Miyoshi Nagayoshi in the Sengoku era.
He was a very excellent SAMURAI, but after Nagayoshi died, he and his Nagayoshi's sons assassinated Ashikaga Yoshiteru, the shougun of the Muromachi shogunate.
(In those days, it was very unusual for Shougun to be murdered.)
He became the subordinate of Oda Nobunaga as soon as Nobunaga extended his influence on the neighborhood's daimyou.
He was treated as an excellent SAMURAI by Nobunaga, but he revolted against Nobunaga and lost.
Although Nobunaga offered that he would not kill Hisahide, if Hisahide gave Nobunaga Hisahide's tea-set, Hisahide committed suicide by bombing that tea-set.
(for samurai, the tea set was one of the best treasures, and Nobunaga wanted to get Hisahide's tea set passionately.)
This is said to be the initial suicide by bombing in Japanese historical documents.
He is famous as a dirty SAMURAI, but is also known as the benevolent lord who established a good local government for the citizen.
Nobody knows which personality was really his own.