- Mad Hatters (former)
- Unnamed Leader
- East Naruhata High Dance Squad (former)
- Unnamed President
- Three Unnamed Dancers
- Sisters of Saint Lila's Academy
- The name of the band is a reference to the separate groups that helped form the band: the Feathers idol duo and the Mad Hatters rock band.
*Disclosure: Some of the links above are affiliate links, meaning, at no additional cost to you, Fandom will earn a commission if you click through and make a purchase. Community content is available under CC-BY-SA unless otherwise noted.