supercell is a band made up of 11 people:

ryo (music, lyrics, leader, founder)
Shirow Miwa (illustration)
Huke (illustration)
Redjuice (illustration)
Suga (illustration)
Mac (illustration and animation)
Yoshiki Usa at Wooserdesign (design)
Hei8ro (Heihachiro) (support in illustration and photography)
Guitar (support in illustration)
Crow (support)
Golv (support)

Vocalists:
nagi (2009 - 2011)
Koeda (2011 - 2013)
Ann (2019 - present)
gaku (2019 - present)