Current state:
disbanded
f(x) (에프엑스) was a five-member girl group under SM Entertainment. They officially debuted on September 5, 2009 with the digital single "La Cha Ta". The group has presumably disbanded following the departures of three members in 2019.
Korean: 루나
Japanese: ルナ
Korean: 엠버
Japanese: アンバー
Korean: 크리스탈
Japanese: クリスタル