From Bulbapedia, the community-driven Pokémon encyclopedia.
Nathaniel (Japanese: ナユタ Nayuta) is the character of the day in Strategy Begins At Home!.
Nathaniel is a small boy who lives in Twinleaf Town. He dreams of becoming a Pokémon Trainer when he gets older. Ash met Nathaniel when he saw him observing some wild Pokémon, and he reminded him of himself when he was younger.
Nathaniel's favorite type of Pokémon are Bug-types, and he hopes to catch many of them once he becomes a Trainer. After the Honey Nathaniel planted on a tree attracted a wild Heracross, Ash mentioned to him that he caught his own Heracross.