Gameru

is a ninja who possesses one of Iō's prototype ninja tool Dakō.

Abilities
Not much is known about Gameru's abilities other than that he has been shown some skill in close combat with the use of Dakō and being capable of fighting against Naruto Uzumaki and Neji Hyūga whom are known for being rather skilled in close combat themselves.

Konoha Histoy Arc
Along with his partner Kusune, they went to Iō to get ninja tools but he refused to give his tools to outsiders. Gameru and Kusune fought Naruto Uzumaki and Neji Hyūga who were no match against Iō's ninja tools. When Iō lend Tenten of his latest invention, Jidanda, Tenten easily defeated them.