Minoru Midorikawa was a Japanese actor and voice actor born on March 5, 1932, in Tokyo, Japan. He was a graduate of Waseda University and was affiliated with the Tokyo Actor's Consumer's Cooperative Society at the time of his death. Before focusing on voice work, he was a member of several theater companies, including Gekidan Koumori and Gekidan Wakakusa. He passed away on September 30, 1985, at the age of 53.

Midorikawa was active in the anime industry from the 1960s through the early 1980s, a period that saw the birth and rise of many iconic genres and series. His voice can be heard in some of the most foundational works of Japanese animation. He is confirmed to have voiced the role of the ISP Director in the 1972 super robot series Astroganger.

His filmography includes a wide range of supporting and guest characters in numerous classic television series. He had roles in early anime such as Jungle Emperor Leo (1965) and Apache Yakyugun (1971). In the 1970s, his work included appearances in adaptations of world literature like Rascal the Raccoon, Swiss Family Robinson, and Anne of Green Gables, as well as genre-defining series like Lupin III Part II, where he voiced multiple characters across different episodes. He also contributed to the science fiction genre with roles in The Ultraman and Kagaku Ninjatai Gatchaman (known in the credits as Science Ninja Team Gatchaman).

Midorikawa's career extended into the 1980s with parts in prominent series and films. He voiced Eschenbach in the 1981 compilation film Mobile Suit Gundam, a role he also played in the TV series. His other notable later roles include the principal in Miyuki (1983) and appearances in the World Masterpiece Theater productions The Perrine Story and The Alps Story: My Annette.

Beyond animation, Midorikawa was active in dubbing foreign films and television series for the Japanese market and provided voices for tokusatsu superhero productions. His voice work in live-action included roles in series like Kikaider-01, where he voiced Big Shadow, and as the narrator for Ninja Butai Gekko. Throughout his career, he collaborated on multiple projects with other prominent voice actors of his era, including Iichirō Nagai, Kaneto Shiozawa, and Katsuji Mori. His body of work represents a significant contribution to the golden age of Japanese voice acting.