Fuji TV

Fuji Televison Network, Inc. commonly abbreviated as Fuji TV is a Japanese television network based in Daiba, Minato, Tokyo that operates on three premium television stations Fuji TV One for news and variety shows, Two for drama and anime, and Next for live premium shows.

Mazinger
All three of the original anime series of Mazinger: Mazinger Z, Great Mazinger, and Grendizer were shown on Fuji TV along with other famous programs at the time such as Science Ninja Team Gatchaman and Getter Robo.