Pokemon Season 6 - Episode 307 – Having A Wailord Of A Time

Impressed at how well they had raised their own Pokémon, Nurse Joy enlists Ash and Max to babysit the Treecko, Mudkip, and Torchic awaiting a Pokémon trainer just about to begin her first journey. The Torchic proves to be the most rambunctious of the group, and when Ash sends several of his Pokémon to gently coax it into obedience, he inadvertently causes the troublesome chick to evolve into a Combusken.