Pokémon FireRed: Rocket Edition: The eight Kanto gyms
What opens up at this point in the game, and everything you can catch by now that you couldn't before.
✓ Not a mission: the gym leaders can be fought whenever you reach them, and their teams (Lv 33 to 47) sit between Bill's and Lance's. Listed here so they fall in a sensible place in the level-cap table.