You need to find Drifloon to complete your Pokedex in Pokemon BDSP. You will only find 1 Drifloon in the game so you have to catch it when you get the opportunity. To find Drifloon, first, you will need to defeat the Team Galactic members who tried to corner off the wind plant. Go...
How to Rematch Gym Leader Byron in Pokemon BDSP? Once you become the champion and visit the Sinnoh Pokedex, head to the National Pokedex, and Roark will tell you about gym leader rematches. Afterward, head back to the Canalava City Gym and talk to Bryon to start the rematch battle. ...