Position: Main Vocalist & Main Dancer
Birthdate: December 2, 1996
Birth & Home: Singapore, Singapore
Ethnicity: Chinese/Singaporean
Languages: English(Nat), Mandarin(Flu), Korean(Con), Malay(Con)
Height: 174cm or 5'8"
Weight: 48kg or 105lbs
Lover: Aron (NU'EST)
- Trained at FNC Entertainment for 4 months
- Former member of GOK
- Signed onto YMC Entertainment as a actress but decided to join Seasons
- Joined on February 1, 2015

Position: Leader, Vocalist & Lead Rapper
Birthdate: April 24, 1995
​Birth & Home: Incheon, Seoul, South Korea
Ethnicity: Korean
Languages: Korean(Nat) & English(Bas)
Height: 165cm or 5'4"
Weight: 49kg or 108lbs
Lover: Jeongmin (Boyfriend)
- Triplet with Youngmin & Kwangmin of Boyfriend
- Trained under YMC Entertainment for 8 years
- Became leader after Serine's leave on January 5, 2015

Position: Vocalist, Lead Dancer, Face Of Group
Birthdate: April 24, 1995
​Birth & Home: Seoul, South Korea
Ethnicity: Korean
Languages: Korean(Nat), English(Flu), Japanese(Con)
Height: 167cm or 5'4"
Weight: 47kg or 103lbs
Lover: Hongbin (VIXX)
- Former ulzzang
- Trained under Pledis Entertainment for 1 year, then at YMC Entertainment for 2 years

Position: Lead Vocalist & Lead Dancer
Birthdate: August 18, 1995
​Birth & Home: Busan, South Korea
Seoul, South Korea
Ethnicity: Korean
Languages: Korean(Nat), Japanese(Con), English(Con)
Height: 163cm or 5'3"
Weight: 48kg or 105lbs
Lover: IIhoon (BTOB) [Dating: March 15, 2013]
- Cousin is Hyunsik of BTOB
- Trained under JYP Entertainment for 1½ years, then at YMC Entertainment for 1½ years

Position: Main Rapper & Vocalist
Birthdate: December 31, 1996
​Birth & Home: Busan, South Korea
Ethnicity: Korean
Languages: Korean(Nat) & Japanese(Con)
Height: 172cm or 5'6"
Weight: 50kg or 110lbs
Lover: JR (GOT7)
- Was supposed to debut in MixxE Girls'
- Trained under Jellyfish Entertainment for 3 years, then at YMC Entertainment for 2 years

Position: Maknae, Lead Vocalist, Visual
Birthdate: December 10, 1998
​Birth & Home: Seoul, South Korea
Ethnicity: Korean
Languages: Korean(Nat) & Mandarin(Con)
Height: 173cm or 5'6"
Weight: 45kg or 99lbs
Lover: Jun (U-KISS)
- Older brother is Allen of BTL (Beyond The Limit)
- Trained under JYP Entertainment for 2 years, then at YMC Entertainment for 7 months