Kusune

was a ninja who possessed Iō's ninja tool, Tsurukame.

Konoha History Arc
Along with his partner Gameru, they asked for ninja tools from Iō but he refused to give his ninja tools to outsiders. Naruto Uzumaki and Neji Hyūga fought Kusune and Gameru but were stalemated by Iō's prototype ninja tools. Kusune and Gameru were defeated by Tenten when she used Iō's latest ninja tool, Jidanda.

Kusune