Ryou  

Aaron

Aaron appeared in A Trainer and Child Reunion! before being briefly mentioned by Lucian in An Elite Meet and Greet. In A Trainer and Child Reunion!, it was revealed that Aaron was preparing for his championship battle against Cynthia. He took Ash and his friends to his training center after finding out they knew Cynthia personally. It was also shown that Aaron's first ever Pokémon and friend was a Wurmple, which he abandoned due to anger at it losing a match. However, he regretted this decision and worked hard to understand Bug-type Pokémon in order to avoid the same incident from happening again. In the episode, Aaron encountered his former Wurmple as a Beautifly after a battle against Team Rocket. He was seen on television one episode later, having lost his match with Cynthia.