Opal is the Gym Leader of Ballonlea's Gym located at the Ballonlea Stadium in the Galar Region. She met
Ash Ketchum and
Goh deep in Glimwood Tangle when they were searching for
Chloe Cerise. She quized them for a long time so they'd stay put as she realized that Chloe would probably show up at the house in the forest where they were.