|Please note that this glitch only exists in the Japanese versions of the game, or is otherwise a glitch from a Pokémon game which was only released in Japan.
Lady Colette in two places at the same time
The Nimbasa Gym glitch or Lady Colette glitch is a glitch exclusive to Japanese versions of Pokémon Black and White. It was also known as the Raimon Gym glitch prior to the games' official translation.
Performing the glitch creates a copy of Lady Colette who will appear in two places at the same time; the Lady Colette who was about to step out of the rollercoaster that leads to Elesa, and the Lady Colette who jumped out of the rollercoaster. The former Lady Colette appears in the middle of the track and is visible, but remains uninteractable. The player is free to use the rollercoaster to move straight through Lady Colette.
To perform this glitch, the player must not have beaten Lady Colette and thus must not have defeated Elesa and earned the Bolt Badge. The player must approach Lady Colette and enter a battle with her, but lose to her in the middle of the battle.
- Double Blue glitch.