From Bulbapedia, the community-driven Pokémon encyclopedia.
Crimson (Japanese: チシヲ Chishio) is a character of the day who appeared in Beating the Bustle and Hustle!. She is part of a criminal duo with Azure.
Crimson and Azure both became contestants on the television program Sinnoh Pokémon Hustle, which was fabricated by Team Rocket with the hopes of stealing Pokémon. Officer Jenny had been tracking the two for quite some time and disguised herself in order to follow them.
Crimson had entered with her Zangoose and showed off her acrobatic skills as she and Azure were some of the few people able to beat the challenges in the game show. She and Azure eventually came across the box that Team Rocket had been keeping all of the Poké Balls that they took from the other contestants, and decided to help themselves to it. Team Rocket were thrilled with Azure and Crimson's performances on the course, and viewed their heist as potential, so they helped them escape from Officer Jenny.
Azure and Crimson however were determined to remain a duo, and turned on the Rocket trio. Crimson used her Zangoose in a Tag Battle with Azure and his Drowzee. Both easily defeated Meowth and Jessie's Yanmega, but eventually fell to Officer Jenny's Growlithe. Both Crimson and Azure were then arrested by Officer Jenny and taken to jail.