GAME FREAK's Masuda Junichi .

A figure who across the years, became heavily involved in the creation of various aspects of the Pokémon games.

In his Super Secret Base, his battle team consists of Rock Star Pikachu, Pop Star Pikachu & Ph. D. Pikachu.
As this is a special Super Secret Base, it can be found in the locked back room of the house south to Mossdeep's Pokémon Center.

This QR code was made available via the Japanese Pokémon Omega Ruby and Alpha Sapphire Full Story Guide Book. Thanks @BlackShark for helping the site archive this.