(from left to right) Luna, Amber, Krystal & Victoria
f(x) They are under SM Entertainment
Debut Song : LA chA TA
Debut Date : September 5, 2009
Official Fan Club : ME U
Official Fan Color : Pearl Light Periwinkle
Sub-Unit : N/A
Solo Unit : Luna & Amber
Birth Name : Song Qian English Name : Victoria Song Stage Name : Victoria Birthday : February 2, 1987 Nationality : Chinese Position : Leader, Main Dancer & Vocalist
Birth Name : Amber Josephine Liu Stage Name : Amber Birth Date : September 18, 1992 Nationality : Taiwanese Position : Main Rapper & Sub-Vocalist
Birth Name : Park Sun Young Stage Name : Luna Birth Date : August 12, 1993 Position : Main Vocalist & Lead Dancer
Birth Name : Jung Soo Jung English Name : Krystal Jung Stage Name : Krystal Birth Date : October 24, 1994 Position : Maknae & Lead Vocalist
FORMER MEMBER
Birth Name : Choi Jin Ri Stage Name : Sulli Birth Date : March 29, 1994