Pokémon: The Series Rewrite:Indigo League Part 1

episode 30: the ninja poké-showdown

Ash and the group arrive in Fuschia City where they visit the poison type gym and go through traps and meet Koga and Ash challenges Koga to a battle. Ash's Charmander evolves into a Charmaleon and starts to disobey Ash but they win the badge right before Team Rocket appears and they send Team Rocket blasting off again. Ash and the group decide to see what's around Fuschia City while they're there.