長崎そよ

Four new bands were introduced with the arrival of the BanG Dream! Girls Band Party! mobile game in 2017: Roselia, Afterglow, Hello, Happy World!, and Pastel Palettes At the end of 2018, a backup band called The Third was renamed Raise A Suilen, with its members portraying new characters. A seventh band named Morfonica was introduced in 2020.
In 2022 and 2023, following a new approach being undertaken by Bushiroad, MyGO!!!!! and Ave Mujica were introduced as the eighth and ninth bands in the franchise. A tenth band, Mugendai MewType, was also introduced in 2023, consisting of five VTubers.
In 2026, two new bands, millsage and Ikka Dumb Rock!, were introduced and both made their debut in the franchise's second mobile game BanG Dream! Our Notes.
For live performances, the members of Poppin'Party, Roselia, Raise A Suilen, Morfonica, MyGO!!!!!, Ave Mujica, and Mugendai MewType play their own music, while the others are limited to vocals as well as voice acting. The live bands are the main characters in the anime while the mobile game further details their formation and activities. Various voice actresses also host band-themed online radio and television programs.