Since the Gym in Opelucid City was closed, Ash had to use the Virbank City Gym as a substitute and here he meets the ultra-punky Roxie who has a Koffing (from Ash's home region in Kanto while they perform a rock concert). And introducing her band, "Koffing and the Toxics." He find out soon enough that the Virbank Gym doubles as a live venue. With a loud Thunderbolt from Pikachu to rock their socks off! Ash challenges the young Poison-type Gym Leader to a Poisonous Gym Battle in which she accepts with one condition: Ash will battle with a full team of six Pokémon while she uses only three Poison-type Pokémon. What Poison-type Pokémon strategy will this next generation Pretty Poison have up her sleeve? The Virbank Gym 6 on 3 battle begins now!
Roxie is the first Gym Leader who made her anime debut prior to the game she was in, Pokémon Black 2 and White 2.