Exploud and Clear

The gang is nearing Petalburg and Ash is excited about his battle with Norman. During a picnic, Ash notices Treecko isn't very happy due to its defeat by a Gulpin. Before Ash can make it feel better, a Loudred rampages through the camp followed by its trainer Guy. While he is able to calm Loudred down, Guy is worried as since it evolved from Whismur, it's become increasingly disobedient. Ash and Guy decide to have a Pokémon battle, Ash using his Treecko and Guy using Loudred. The battle takes an unexpected turn when both Pokémon evolve at the same time. Exploud promptly takes off on another rampage. While everyone looks for it, Team Rocket decides to steal it for Giovanni.