Once Allister’s team is out, you’ll receive a Ghost Badge. Opal is an old Fairy Gym leader who you will fight in the Ballonlea Gym. Don’t judge a book by its cover, as she is more powerful ...

Gym badges in Pokemon games grant special moves ... or you can duel Allister in Pokemon Shield for the Ghost Badge. If you've played the mobile game Pokemon Masters, you'd bump that number all ...