From Bulbapedia, the community-driven Pokémon encyclopedia.

Junichi Masuda (Japanese: 増田順一, born January 12, 1968) is a composer, and has composed music for the Pokémon games.

He designed Hoenn, and as such he has been credited with 原案 original design in the anime since the Advanced Generation series. More recently, he was the director of Pokémon Diamond and Pearl.

Additionally, he runs a Director's Column (Japanese) on Game Freak's website, with many recent entries translated into English.