Unshō Ishizuka was a Japanese actor, voice actor, narrator and theatre director from Katsuyama, Fukui. He was affiliated with Aoni Production at the time of his death and was known for providing the voice of both the narrator and Professor Oak on the Japanese anime series Pokémon. In addition to that, he regularly appeared in both the Japanese and English-language versions of the Pokémon anime, voicing Onix, Steelix and numerous other Pokémon.

Katsuyama is a city located in Fukui Prefecture, Japan. As of 31 May 2018, the city has an estimated population of 23,527, with 7,973 households, and a population density of 93 persons per km2. The total area of the city was 253.88 square kilometres (98.02 sq mi). Katsuyama was the ninth-best ranking city in a ranking that compared health and sanitation in cities around the world published in April 2007.