You will watch Pokemon Season 4 Episode 163 online for free episodes with high quality. Online episode guide, Pokemon Season 4 Episode 163 The Bug Stops Here Our heroes happen upon a Bug Pokémon Catching Contest. Ash rushes to enter himself at the last minute, and meets Casey, an old opponent. The competition between the two is fierce. Misty gets mad at Casey because she is pushing her Pokémon too hard. Meanwhile,Team Rocket has trapped Ash in a cage. Casey’s Chikorita evolves into a Bayleef to rescue Ash. Ash wins the contest with the prizes: A Sun Stone and a Beedrill Ash had caught. Ash gave the Beedrill to Casey because of her love for yellow-colored Pokémon.