Great Leader of Shocker (voice) / Great Leader of Destron (voice) / Great Leader of Black Satan (voice) / Narrator / Great Leader of Neo-Shocker (voice) / Emperor Crisis (voice) / Great Leader of Delza Army / Rock Great Leader (voice) in Kamen Rider (1971) is played by Gorō Naya.
See the full spoiler-free cast & character guide for Kamen Rider