Yutaka

Keegan is a character of the day who appeared in The Stolen Stones! (EP192). He and his older sister Ramona run a courier business with the help of their Arcanine.

While he and his sister were traveling to deliver some Fire Stones for an upcoming Fire-type Pokémon contest, they rescued Ash and his friends from a rock-slide. After becoming acquainted with the group, Keegan and Ramona offered them a lift aboard their Arcanine as they were heading towards a city near Olivine City.

Keegan later tried to teach Ash how to command and ride on his Arcanine after Ash showed a lot of interest. However, he had a hard time learning how to be one with the Arcanine. Soon, the Fire Stones that he and his sister had to deliver were stolen by Team Rocket. The group split up, with Keegan and Ash deciding to pursue Jessie. They followed her right to a battlefield. She gave her word that she would give the stones back if Ash defeated her in a battle. Pikachu easily defeated her Arbok and she seemingly handed the stones over. However, at the moment they went to retrieve them, they fell into a pitfall trap and found out that the Fire Stones they received from Jessie were fake. Even worse, Keegan had hurt his arm in the fall.

Once out of the hole, Keegan and Ash attempted to go after Jessie once again to get the stones and Pikachu back. But as soon as Arcanine tried to take off, Keegan cringed in pain. Ash suggested that he should lead Arcanine, and Keegan agreed. Ash still had trouble leading Arcanine, but Keegan said that Ash had to become one with Arcanine like he did with Pikachu. Soon, Ash learned to lead Arcanine perfectly.

They ultimately found Team Rocket and got the stones back. Keegan and Ramona then delivered them to the competition.

(Source: Bulbapedia)