From Bulbapedia, the community-driven Pokémon encyclopedia.
Kunihiko Yuyama (湯山邦彦) (b. 1952) is an anime director who has been involved with many of the products of the Pokémon anime. He is also an illustrator for the TCG.
Yuyama is one of the founding members of OLM, the animation studio that produces the Pokémon anime. He began his career in the 1970s as an in-between artist on the original Space Battleship Yamato (aka Star Blazers in North America) and subsequently became an episode and series director on series for Tatsunoko Productions, Ashi Productions (now Production Reed), and Kaname Productions. Other than Pokémon, his most noteworthy work is likely the original Magical Princess Minky Momo series, on which he worked with original Pokémon anime head writer Takeshi Shudo.