Eiji Maruyama
Eiji Maruyama (1930-2015) was a Japanese actor and voice actor known for his work in various Tokusatsu productions such as Kamen Rider and Super Sentai. In addition, he has a long anime voice acting career, with his more famous roles being Steiner Munchausen in Chrono Crusade and Death Phantom/Wiseman in Sailor Moon. In both Neon Genesis Evangelion and Evangelion 1.0, he provides the voice for the teacher of Class 2-A, who isn't named but is simply called "Old Sensei" or "Nebukawa no Sensei" by fans.
Links
https://www.animenewsnetwork.com/encyclopedia/people.php?id=1136
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