Mifune

is the of the Land of Iron where the summit of the Kages take place.

Part II
He greets Gaara upon his arrival in the Land of Iron. Mifune states that he is the moderator as the meeting of the Kages commences, during this meeting Mifune also voices that he should be respected as the neutral party in the event that an alliance between the five Shinobi Nations is formed.

Mifune has proposed that Danzo should lead the five-village alliance to deal with Akatsuki, to the shock of the other kages, because only Konohagakure has the only remaining Jinchuriki. However, Ao suggested that Danzo is using his Sharingan to control Mifune. After Zetsu interrupted the Kage meeting he ordered two of his men, Okisuke and Urakaku, to locate Sasuke Uchiha at all costs. Later he reprimanded Danzo for using the Mind-controlling Dōjutsu, as Ninjutsu was forbidden in the meeting.

Later, when Sasuke infiltrates the summit, he watches as White Zetsu is attacked by the Raikage. He is present when Sasuke finally reaches the meeting room, and is the first to attack him using impressive speed and jumping ability. He manages to suprise Sasuke with his sword attack, but it is nevertheless deflected. Mifune compliments Sasuke on his sword skills.

After Madara retrieved Sasuke and revealed his plan to unleash an "Infinite Tsukiyomi" on the world as well as a declaration for the Fourth Great Ninja war, Mifune promises to aid the Five Great Ninja nations on the battle against Akatsuki.

Abilities
As the General of the samurai, Mifune has command of the rest of them and by extention is a highly capable leader. Like them, he is also capable of channeling chakra through his sword to increase its cutting power. Mifune has also shown great agility for his age as shown from jumping high into the air to reach Sasuke. He is also a masterful swordsman, able to talk down to Sasuke's own sword skills.

Trivia

 * The name Mifune is often used for samurai or rōnin characters. It comes from the famous Japanese actor Toshirō Mifune, who made a name playing in over 170 feature films, often portraying samurai and rōnin roles. Some of the films he played in are Akira Kurosawa's Rashōmon, Seven Samurai, Throne of Blood, Yōjinbō, and Hiroshi Inagaki's Samurai Trilogy.