f(x) (Korean: 에프엑스) is a five member South Korean girl group formed by SM Entertainment in 2009. The name is a play on the mathematical notation for function, and when input with different ‘x’, there can be many different outcomes. f(x) strives to be the kind of girl group that can change and adapt to many situations. The group members have also been nicknamed “function girls”. The group made their debut on September 1, 2009 with release of a digital single “La Cha Ta” (stylized as “LA chA TA”). The quintet consists of Victoria, Amber, Luna, Sulli and Krystal.



Stage name: Victoria Song
Real name: Song Chi En
DOB: 2 Februari 1987
Birthplace: Qingdao, Shandong
Nationality: Cina
BloodType: A


Full Name: Amber Josephine Liu
Stage Name : Amber
Birthday: September 18, 1992
Position: Main Rapper, Vocalist
Nationality: Taiwanese


Real Name: Park Sunyoung
Stage Name: Luna
Birthday: August 12, 1993
Position: Main Vocalist, Lead Dancer
Nationality: Korean


Real Name: Choi Jinri
Stage Name : Sulli
Birthday: March 29, 1994
Position: Vocalist, Sub-Rapper
Nationality: Korean


Stage name: Krystal Jung
Real name: Jung Soo Jung
Nationality: Korea
DOB: October 24, 1994
BloodType: A
BirthPlace: San Fransisco


Source + Images: Various site, wikipidea

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