[1] She is known for portraying Gon in First Human Giatrus, Kinoppy in Paul's Miraculous Adventure, Santa Minami in Chōgattai Majutsu Robo Ginguiser, Minoru Yamada in Ojamanga Yamada-kun, Togejirou in Ninja Hattori-kun, Prince Komaro in Yattodetaman, Ryo Ishizaki in Captain Tsubasa, Mag in Choushinsei Flashman, and Robotan in Robotan.
Hiroko Maruyama, a native of Tokyo, was born on 22 October 1946 and educated at Ōmori High School.
[2] After spending one year at Toho School of Performing Arts, she joined Teatro Echo in 1966.
[3] She also had voice acting roles in the Hayao Miyazaki films My Neighbor Totoro (1988) and Kiki's Delivery Service (1989).
[3] Although her voice acting career had gradually declined by then, she still had voice acting roles during the 2000s and 2010s, including Koharu Midō in Tsukuyomi: Moon Phase, Mamō in And Yet the Town Moves, Tamura-san in Ground Control to Psychoelectric Girl.