Group Name: f(x)
Company: SM Entertainment
Debut song: Lachata
Debut Date:1 st September 2009
Birth Name: Jung Soo Jung
Stage Name: Krystal
Birthday: October 24, 1994
Position: Lead Vocalist
Nationality: Korean-American
Birth Name: Choi Jin Ri
Stage Name: Sulli
Birthday: March 29, 1994
Position: Vocalist, Sub-Rapper, Face of The Group
Nationality: Korean
Birth Name: Amber Josephine Liu
Stage Name: Amber
Birthday: September 18, 1992
Position: Main Rapper, Sub-Vocalist
Nationality: American + Chinese
Birth Name: Song Qian
Stage Name: Victoria
Birthday: February 2, 1987
Position: Leader, Main Dancer, Vocalist
Nationality: Chinese
Birth Name: Park Sun Young
Stage Name: Luna
Birthday: August 12, 1993
Position: Main Vocalist, Lead Dancer
Nationality: Korean
Source: Sumandu