Grimsley is an Elite Four member in the Unova region's Pokémon Black, White, Black 2, and White 2 games, specializing in Dark-type Pokémon. Known for his sophisticated demeanor and gambling background from the Battle Subway, he pilots a helicopter and challenges players with his powerful team led by Bisharp. His philosophy revolves around the strong surviving and the weak fading away, reflecting his sharp, unflinching personality.