Kusune is a ninja who possesses Iou's ninja tool, Tsuru-Kame. Him along with Gameru asked for ninja tools from Iou but he refused to give his ninja tools to outsiders. Naruto Uzumaki and Neji Hyūga fought Kusune and Gameru but were stalemated by Iou's prototype ninja tools. Kusune and Gameru were defeated by Tenten when she used Iou's latest ninja tool, Jidanda. (source: Narutopedia)
Yuusuke (ユウスケ, Yūsuke) is a fisherman in the Land of Fire. When he was a child, he and his father tried to catch a giant summoned marlin, they failed, resulting in his father's death. Yuusuke became determined to avenge his father by catching the marlin. Trivia: Yuusuke's appearance was modeled after his seiyuu, singer Yuusuke Kamiji. He also performed Otakebi, the movie theme of Naruto Shippūden 5: Blood Prison, which premiered a week before Yuusuke's debut in the anime. (source: naruto.wikia.com)
Captain of the ship in which Hishaku was part of. (episode 225)
Former leader of the Nadeshiko Village. Decades ago she encountered Jiraiya who has entered her village to do "research" for his next novel. After he escaped she pursued him and challenged him to a duel for his hand in marriage. This match was however postponed, as neither party was making headway against the other. Jiraiya promised that their students instead should one day seek each other out and fight if the two never met again. This promise fell to her pupil Shizuka and Jiraiya's last pupil Naruto Uzumaki. She's presumed to be Shizuka's mother but is not confirmed neither named as such in the credits, instead she's named as "Previous Head of the village (先代里長)". Appears in episode 235. (Source: Narutopedia)
Yukata (ユカタ, Yukata) is a young kunoichi from Sunagakure. Anime Debut: Naruto Shippūden Episode #261 (source: Narutopedia)