Masanari Nihei (二瓶 正也, Nihei Masanari; 9 December 1940 – 21 August 2021) was a Japanese actor. He played Mitsuhiro Ide in Ultraman, having won the role when originally cast actor Susumu Ishikawa left the production.
Source: “Masanari Nihei”, English Wikipedia (CC BY-SA 4.0), excerpt