This is a young child that thought his Caterpie could stand up to Cynthia's Garchomp. He has a very minor role in the beginning of the first episode, where he and Cynthia talk after their "battle".

He's a young boy that really only shows two emotions throughout his screentime: Sadness and dismay when Cynthia beats him (There's a lot of crying involved here), and hopeful optimism when she tells him that with a little more practice he can become a great trainer.