BioCress is a gym leader of Sanyo City Gym where he shared the responsibility with his brother's Chili and Cilan. He is also a Pokémon Sommelier who, with his abundance of knowledge and experience, determines the compatibility of Trainers and Pokémon and gives them advice on how to befriend each other. Cress's Panpour is his main Pokémon, a water type, who was sent out to battle against Pikachu when Ash challenged all three of the Sanyo City Gym Leaders. Cress was quickly able to counter Ash's tactic of using an electric type Pokémon as his Hiyappu was able to defeat Pikachu.
Argument with PodCress explained to Cilan over the video phone that he had a chat with their brother Chili about his aggressive battling style, which ignores defense and solely concentrates on offense. Instead of giving him advice like Cress had intended, it seemed like Cress hurt Chili's feelings when he pointed that out to him and he ran off. Chili then showed up Driftveil City where Cilan was with Ash as they waited for Clay to be ready for the gym battle. After a battle, Cilan found Chili at the donut shop and the two of them talked and Chili explained the reason that he left home was because Cress ticked him off and he didn't want to return to the Gym, so he ended up setting off on a journey. But as time passed, he began thinking about Cress's suggestion that he should change his battle style. Cilan realized that Chili had the time to let his thoughts ripen to make a good decision. After a battle with Ash, Chili and his Baoppu's enthusiasm grew and he decided to return home to make up with Cress before continuing on their journey.
Cress's Panpour was first revealed in the Sanyo Gym when Ash was shown the three gym leaders Pokémon and he looked it up in his PokéDex. Cress's Panpour is Chili's main Pokémon and is relied on for gym battles. Cress's Panpour battled against Pikachu during Ash's gym battle. Cress's Panpour showed its was a strong opponent and was able to avoid Pikachu s attacks as Cress's strategy proved to be enough to defeat Pikachu.