Position: Leader, Lead Vocalist, Main Dancer
Birthdate: August 29, 1991
Birth & Home: Incheon, South Korea
Seoul, South Korea
Ethnicity: Korean
Languages: Korean(Nat) & English(Bas)
Height: 165cm or 5'4"
Weight: 55kg or 121lbs
Lover: Donghyun (Boyfriend)
- Younger brothers are Youngmin & Kwangmin of Boyfriend
- Trained under SM Entetainment for 2 years than at Starship Entertainmebnt for 1 year
- Attended Dongguk Univeristy and majored in acting (Class of 2014)
- Fear is balconies; 9th grade her friend jumped off the 10th floor
- Wants to be a producer like Brave Brothers
- Role models are SISTAR and T-ARA
- Allergic to peanuts

Position: Main Rapper, Lead Dancer, Vocalist
Birthdate: May 26, 1993
​Birth & Home: Incheon, South Korea
Ethnicity: Korean
Languages: Korean(Native), English(Bas), Chinese(Bas)
Height: 165cm or 5'4"
Weight: 49kg or 108lbs
Lover: Mark (GOT7)
- Trained under Starship Entertainment for 4 years
- Attended Kyung Hee University and majored in fine arts (Class of 2016)
- Pre-Debut: Was ulzzang
- Has a hat collection in closet
- Plays violin and piano since 3 years old
- Friends with Hyoyeon and Ryewook

Position: Vocalist & Lead Rapper
Birthdate: December 31, 1995
​Birth & Home: Seoul, South Korea
Ethnicity: Korean
Languages: Korean(Nat) & Japanese(Con)
Height: 163cm or 5'3"
Weight: 47kg or 103lbs
Lover: V (BTS)
- Trained under Starship Entertainment for 3 years
- Fan girl of Nine Muses
- Attending Dongduk Women's University and majoring in vocal music (Class of 2018)
- Loves skinship

Position: Main Vocalist, Maknae, Face Of Group
Birthdate: October 3, 1998
​Birth & Home: Busan, South Korea
Ethnicity: Korean
Languages: Korean(Nat) & English(Con)
Height: 173cm or 5'6"
Weight: 45kg or 99lbs
Lover: Jun (U-KISS)
- Older sister is Sera (Former member of Nine Muses)
- Has older brother
- Trained under Star Empire Entertainment for 4 years than at Starship Entertainment for 3 years
- Attended Seoul School of Performing Arts (Class of 2017)
-Atttending Chung-Ang University and major in Traditional Arts in Korean Music & minor in Fashion (Class of 2020)