Ryōichi Tanaka (田中 亮一, Tanaka Ryōichi; born January 26, 1947) is a Japanese actor and narrator affiliated with Aoni Production. He is most well known for the roles of Akira Fudo in Devilman, Nobita's Teacher in Doraemon, and Cancer Deathmask in Saint Seiya.
Source: “Ryōichi Tanaka”, English Wikipedia (CC BY-SA 4.0), excerpt