Okisuke

is a samurai from the Land of Iron and one of Mifune's right-hand-men alongside Urakaku.

Personality
Okisuke is a very solemn, and dutiful individual who will carry out his assigned tasks to the letter without hesitation. In the anime, he voiced distaste in teaming up with shinobi, believing that they were using the samurai as mere tools for the safety of the whole world. It was not until Mifune explained everything to him, telling them that they would be working alongside each other as equals, that this concern abated.

Appearance
He is a bald man with violet-coloured, pupiless eyes and a cross-shaped scar that extends across his forehead and descends downwards past his right eye, whereas a dragon tattoo is inscribed above his left. Due to the injury that he has sustained over his right eye, it remains permanently closed. His attire during the Kage Summit consisted of a simple purple kimono-like outfit, with a red scarf encircling his neck that obscures the lower half of his face and conceals a communicator as well.

In the anime when he was deployed with the Fifth Division, he wore the standard samurai attire and helmet with horns, to signify his rank.

Abilities
As a samurai, Okisuke is skilled in kenjutsu, as seen in the anime when he was able to kill a White Zetsu Army clone with a single strike, even when the latter was wearing a samurai armour. He also has great reflexes, seen when he already reached the grip of his sword before Zetsu even finished emerging out of the ground, while the present shinobi did not react at all. In the anime, he was also shown to be able to channel chakra through his sword. He is also Mifune's right-hand man, which further exemplifies his strength.

Five Kage Summit
When the Fourth Raikage requested that the Kage convene, the Land of Iron was selected as the site of the Summit, with Mifune chosen to act as the meeting's moderator. Assigned to the general's personal protection detail, Okisuke alongside Urakaku, watched over Mifune as he greeted the Kazekage and his delegation upon his arrival.

As the assembly commenced their discussions, Okisuke assumed his position to the rear of his leader, where he remained for the entirety of the meeting despite the Raikage's various violent outbursts. However, when the meeting abruptly concluded due to White Zetsu's intrusion, Okisuke was ordered to inform the other samurai to locate the invading Sasuke Uchiha and make preparations for battle. after he attempted to ascertain whether or not the intruder were truly dead, after White Zetsu's neck is broken by the Raikage, he performed a brief examination of the body. It is from this position that he observed Sasuke's succeeding confrontation with the Kage, before becoming ensnared by one of Zetsu's clones, when Black Zetsu activated his Spore Technique. Later freed from these confines through Kankurō's intervention, Okisuke listened to Tobi's scheme and only upon the Allied Shinobi Forces' formation, departed.

Encountering a small platoon during his attempts to track down and secure the remaining members of Taka, Okisuke recognised that two of the samurai were actually Suigetsu Hōzuki and Jūgo in disguise and, drawing both his swords, forced them to reveal their helmets.

Fourth Shinobi World War: Countdown
Okisuke attended the second meeting called by the Fourth Raikage, alongside his leader Mifune.

Fourth Shinobi World War: Confrontation
In the anime, it was shown in Mifune's flashback, that he had a brief conversation with Okisuke before leaving for the battlefield. Later, it was revealed that Okisuke had also been deployed with the rest of the Fifth Division and came to Surprise Attack Division's aid before Mifune began to fight Hanzō and later confronted the reinforced Surprise Attack and Diversion Platoon. When Kankurō warned him about the poison mist, Okisuke told him that they were all right because their masks were specially designed to protect them against the poison. When Kimimaro approached the samurai, Okisuke tells them to get ready as the reincarnated shinobi clashed with them and used his chakra flow technique to try and cut through Kimimaro's dense bones.

Creation and Conception
Kishimoto noted that with the scars and tattoo, he had created a fairly scary-looking character. He drew him keeping in mind that he was Mifune's faithful servant, giving the readers the impression that he would tacitly carry out orders along with Urakaku.

Trivia

 * In Naruto: Shippūden episode 280, Okisuke noted that the correct countersign to his statement "mountain" was "river". This may be an allusion to either the show: "'The Burning Mountain River" which famous samurai and Mifune's namesake Toshiro Mifune appeared, or to the Japanese saying which roughly translates to, "the country is in ruins, and there are still mountains and rivers".