"Grayson shares his love of cars (especially hot rods) with his League friends Mick and Tyson. He's a student at a local college. He's been playing Pokémon since it first came out and is a formidable opponent... though not as formidable as his sister, Cammie."
Players face Grayson in the fifth round of the Gold League, after defeating Ali. After defeating Grayson, players move on to face Juji.
Players face Grayson in the third round of the City Championship, after defeating Juji. After defeating Grayson, players move on to face Rika.