was a Japanese actor, voice actor and narrator from Taità Â, Tokyo. He was best known for voicing Medama Oyaji in nearly every adaptation of Shigeru Mizuki's GeGeGe no Kitarà  made during his lifetime.
During his life he had been attached to Gekidan Tà Âgei and then Theatre Echo; he was attached to Aoni Production at the time of his death. He had a naturally deep voice but became famous for voicing characters with a high pitched voice. In addition to GeGeGe no Kitarà Â, he also had prominent roles in Tensai Bakabon (as the first voice of Honkan-san), Mazinger Z (as Mucha), Paul's Miraculous Adventure (as Doppe), Magical Princess Minky Momo (as Sindbook), Akuma-kun (as Youaltepuztli), Dr. Slump & Arale-chan (as Gara and Akira Toriyama), ' (as Brass), and the Persona series (as Igor).
In 1968, he was cast in the first GeGeGe no Kitarà  anime as the title character's father Medama Oyaji, an anthropomorphic eyeball. He reprised the role, alongside co-stars Masako Nozawa (Kitarà Â) and Chikao à Âtsuka (Nezumi-Otoko), in the 1971 follow up color series. When it came time for the 1980s series the producers decided to go with an all new voice cast, but auditions for Medama Oyaji came up short so Tanonaka was asked to reprise the role yet again. From there he continued to voice the character in practically every adaptation made during his lifetime, the sole exception being the PlayStation 2 games from the early 2000s, in which the role was given to Kazuo Kumakura, and a single episode of the 1971 series, where Hiroshi à Âtake filled in for him. Tanonaka performed the voice of Medama Oyaji for the live action adaptations, and also appeared on many variety shows and in many commercials as the character. In 2008, he reunited with Nozawa and à Âtsuka to reprise their respective roles for the darker Kitarà  adaptation Hakaba Kitarà Â. As Medama Oyaji is actually the reanimated form of Kitarà Â's deceased father, the character was voiced by Daisuke Gà Âri when he appeared alive in the first episode.
On January 13, 2010, Tanonaka suffered a heart attack in his Tokyo home and was found dead by family members. He was 77 years old at the time of his death. His final performance was in Marie & Gali as the voice of Leonardo da Vinci. Memorial services were held in Tokyo Memolead Hall on January 19, 2010. He is survived by his older brother Hiroshi.
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