Jōkō Ninomiya (二宮 城光, Ninomiya Jōkō; born January 27, 1954) is the founder and director of Enshin Karate. He presides over the Enshin organization from the headquarters (honbu) in Denver, Colorado. His title as head of the Enshin organization is "Kanchō" (Grandmaster).
Source: “Jōkō Ninomiya”, English Wikipedia (CC BY-SA 4.0), excerpt