Brandon
From Bulbapedia, the community-driven Pokémon encyclopedia.
Pyramid King Brandon (Japanese: ピラミッドキング ジンダイ, Piramid King Jindai) is the Frontier Brain and chief of the Battle Frontier's Battle Pyramid.
Any trainer arriving at the top of the pyramid just after Brandon must battle this Pyramid King for the status of the pyramid's conqueror.
Brandon appreciates the grand life of the explorer. He recalls the passion, danger, and despiration of his death-defying and life-affirming adventures. When defeated in battle, he'll praise the grandness of the match and hand over the Brave Symbol.