Daimyo Akechi appears in the Ring of Earth.
He was a Samurai lord and had a strong hatred of ninja that was obsessive. His main aim is to wipe all ninja clans of the face of earth. Because his father had been killed by ninja, he wanted to exact revenge on all of them.
At the end of the Ring of Earth, he is killed after trying to disguise himself as a ninja. Jack catches him out by saying the secret ninja password: "A sparrow never lands where the tiger roams" (the secret password of Shonin's Clan). Akechi didn't know about it, and thus revealed himself. He tries to stab Shonin but is killed by Zenjubo, who twists his knife into his own body.