I finally returned to the Pewter City Gym, and I challenged Brock to a battle. He sent out his Graveler first, and I used my Feraligatr against it since he had the type advantage. I had Feraligatr use Surf against Graveler, and Graveler fainted. I switched out to Bellossom after that, and I defeated Brock's Kabutops with Giga Drain. I used my Feraligatr against Brock's Onix after that, and I won that match with Surf. I used Bellossom again against Brock's Rhyhorn, and I won with another Giga Drain. All that was left Brock's Omastar, and Bellossom defeated it with another Giga Drain attack. I obtained the Boulder Badge from Brock as well as his Gym's TM after I defeated him. I healed my Pokemon at the local Pokemon Center, and then I went east towards Route 3. I battled against the trainers along the route, and I saved outside of the Pokemon Center near Mt. Moon's entrance.