Castelia City Pokémon Gym Leader: Burgh "Premier Insect Artist"
Pokémon Black and White
Before being able to challenge the Gym, the player must help Burgh recover Bianca's stolen Munna from Team Plasma.
The Castelia Gym is designed like a huge beehive. It contains many small hexagonal rooms, several of which are cut off by walls of honey, which are at first barricaded by gates. There are buttons which are placed in the center of most of the rooms, and if certain buttons are stepped on, they trigger the gates to descend. However, a few buttons make Trainers who battle the player appear instead. The player is able to walk through the walls of honey once these gates are gone, allowing them to venture through the Gym and battle Burgh. The Gym is also decorated with pictures painted by Burgh himself. The room in which Burgh stands is slightly different to the previous rooms. The hexagonal room leads to a set of stairs, which leads up to a platform on which Burgh stands.
Pokémon Black 2 and White 2
Initially, Clyde will be blocking the Gym entrance, preventing the player from entering in Burgh's absence. He won't move until Burgh returns to the Gym after the player has helped Hugh to defeat Team Plasma in the Castelia Sewers.
The Gym's interior has been redesigned. The Gym is now made up of multiple levels of silk, and the player must travel through silk cocoons to go between the different levels, battling Harlequins along the way, eventually making their way to the top floor, where Burgh is. The top floor is filled with colored paint on the floor, and Burgh's paintings are hung around the room. After reaching Burgh's room, the player is able to jump down a hole on the left side that leads to the bottom of the Gym.
The Gym is a lilac building with huge glass windows on the walls and roof and a plant pattern above the front door. It is surrounded by skyscrapers and trees on a street called Gym Street. Leading to the front door are camouflage tiles. The inside is a botanical garden with a path for Trainers to walk on. Bug Pokémon such as Sewaddle also reside here. Some of the trees are from Pinwheel Forest. The battlefield rises through the floor, it is a sandy terrain. Around the battlefield is more foliage with two huge propagators either side of it.
Dwebble was the first Pokémon that Burgh chose to battle Ash in Battling For The Love of Bug-Types!. It defeated Ash's Tepig easily, but was knocked out by Ash's Sewaddle. Burgh says that its shell is much lighter than a normal Dwebble's, making it more agile.
Whirlipede was the second Pokémon that Burgh chose to battle Ash in Battling For The Love of Bug-Types!. It put up a hard fight against Sewaddle, and its SolarBeam caused him to evolve. Despite the type advantage, Whirlipede was defeated by Ash's newly evolved Swadloon.
In Battling For The Love of Bug-Types!, Leavanny was used in a Gym Battle against Ash and his Swadloon and won easily. It later disabled Pikachu with String Shot and dominated the battle until Pikachu used Leavanny's Leaf Storm to cut free from the threads and bombarded it with all of his attacks. It was ultimately defeated.
The Castelia Gym appeared in Big City Battles and The Case of the Missing Pokémon, where it was challenged by Black. The Gym puzzle was specifically crafted for Black's Gym challenge as one of Burgh's artworks.
After making his way through the walls of honey, Black started his battle with Burgh. He was at first unwilling to use Tep due to White not wanting to let it evolve. As such, he resorted to Brav and Tula instead. In the end, Black was left with only Tep against Burgh's Dwebble, which kept striking the Fire Pig Pokémon with super effective Smack Downs. Just when it seemed like Tep had lost, it suddenly evolved into a Pignite, defeating Dwebble and earning Black the Insect Badge.
After the battle, Iris brought an unconscious Bianca to the Gym, realizing that one of her Pokémon had been stolen. Using Pignite's sensitive sense of smell, the group then departed the Gym to find the culprits.
Trivia
Origin
Castelia Gym's interior design in Black 2 and White 2 may be based off the interactive sculptures of contemporary artist Ernesto Neto.
