Misaki began wearing the bear costume at her part-time job at the downtown district, where she initially thought she would only be handing out balloons and flyers, before she was reluctantly roped into joining the band by Kokoro.
Michelle is a fluffy pink bear costume with white facial detail and paws. Michelle's eyes are big and shiny, and her mouth is fixed to be opened in a cat smile. Michelle wears a matching uniform of her band mates, with the addition of fuzzy purple headphones with a black and gold center.
- Michelle is shown to be somewhat of a mascot character in the Girls Band Party universe.
- Misaki, due to Kokoro, Kaoru and Hagumi, has also had to come up with a story and personality for Michelle at multiple times. Some examples of said story are:
- Despite described as a bear, some of the characters have been confused about what Michelle really is. (Himari initially thought that Michelle is a dog, Hina mistook Michelle for a lion, while Yukina at one point thinks Michelle is a cat).
- In the 4th episode of BanG Dream! 2nd Season, it is shown that Michelle has a flight mode that can be activated with a special command.
- For the Persona collaboration, if players logged in during the campaign period they received a new Michelle costume, which was based on Mona.
- For the Gochiusa collaboration, players also received a new Michelle costume, which was based on Takahiro Kafuu's design.