From Bulbapedia, the community-driven Pokémon encyclopedia.
Hiroki Asanuma (Japanese: 浅沼寛樹) is a 3D CG illustrator for the Pokémon Trading Card Game. He has been illustrating since Boundaries Crossed starting with Scizor. He was also a graphic designer for Pokémon Duel.
For a list of cards illustrated by Hiroki Asanuma, go here.