Taisei

Tyler is a beginning Pokémon Trainer and a character of the day who appeared in The Thief That Keeps on Thieving!.

A week into his journey, Tyler was trying desperately to catch a Yanma when he met Ash and his friends. After finally weakening a Yanma, he was about to catch her until Team Rocket showed up. Jessie threw a Poké Ball and caught Yanma herself.

Dismayed by this, Tyler began to feel that he would never catch a Yanma, but Ash encouraged him and he found the confidence to try again. The next day, he attempted to catch another Yanma but Team Rocket interfered once again and the Yanma got away. A little bit later he put out some of Brock's Pokémon food which lured another Yanma. Team Rocket tried to interfere again but Ash sent them blasting off. It took a couple of attempts, but Tyler managed to catch this Yanma.

Tyler enjoyed his time with Ash and his friends, and was inspired by his one night of camping with them to seek out his own traveling companions. He expressed more interest in competing in Gym battles.

(Source: Bulbapedia)