Aaron, known as Ryou (リョウ) in Japan, is a character introduced in Pokémon Diamond and Pearl.
Aaron, a member of the Sinnoh Elite Four, aims to become a perfect Trainer who is as strong and beautiful as his beloved Bug-type Pokémon (official bio).
He has green eyes and short green hair with long bangs and an ahoge. He wears a black sleeveless shirt with a zipper pull tab, a white belt, orange pants, and white shoes.