Hyō (ヒョウ) is a member of Konoha's ANBU and a former member of the, now disbanded, Foundation. As most Foundation members, he's still loyal to Foundation's founder Danzō and is apparently trustworthy enough to be given the task of delivering top-secret information for him. He is introduced when acting as a go-between for Danzō and Sai, reminding the latter about the will and purpose of Foundation while doing so. He is presumed to be helping in Danzō's efforts in becoming Hokage.

(Source: Narutopedia)