Former GnT guest and "Emperor of Anime Songs" Ichiro Mizuki has passed away from lung cancer at the age of 74.

My favorite appearance by Mizuki-san was in the episode when Matsumoto, Hamada, Endoh, Tanaka and Hosei made robots out of cardboard and Mizuki-san sung the battle theme song at the end.

"ZETTTT!"

https://www.animenewsnetwork.com/news/2 ... 74/.192829