Poketto monsutâ - Season 6 Episode 8

Treecko may have joined Ash's team, but it's still standoffish to his other Pokémon. When our heroes meet up with a wild Seviper in the woods, Ash sees this as a chance to let Treecko show what it can do! But Seviper is too powerful, and Treecko takes several hits…mostly to its ego. Ash takes it to the nearest Pokémon Center for treatment, and afterward, it runs away to train for future battles by itself. Meanwhile, Jessie has caught Seviper for Team Rocket, and when the villains attack in yet another attempt to steal Pikachu, Treecko's new battle skills save the day!