An Yujin was born on September 1, 2003, and is the 21-year-old leader of IVE from South Korea. Standing at approximately 172–173 cm with blood type A, her MBTI is ISTP, earning her a reputation as a practical and flexible leader. She leads the team with calm skill and leadership, excelling in both vocals and performance. She dislikes being called by her full name, An Yujin.

Liz (Kim Jiwon) was born in 2004 (22 years old). She is very shy but becomes an entertainer once she gets close to someone. As IVE's main vocalist, she was often called the 'bleach fairy,' but currently, she has black hair and is known as a 'black cat.' Because she resembles a cat, she has been nicknamed 'cheese cat' or 'beige cat' depending on her hair color. Her face turns red like a tomato when she is the center of attention, and she is an INTP who gets hurt more easily than one might expect.

IVE member Rei was born in 2004 in Nagoya, Japan. Standing at about 169 cm, she holds the rapper position. Her MBTI is INFJ, reflecting a delicate and considerate personality that warmly cares for her members and fans. On stage, she shows a chic and charismatic charm, while in daily life, she is humble, calm, and cute, earning her the nickname 'Kong-sooni.' She is a diligent artist who always strives to stay true to her roots, just like her motto.

Leeseo was born on February 21, 2007, and is currently 18 years old from Seoul, South Korea. Standing at about 166 cm with blood type O, she is under Starship Entertainment and serves as the youngest member (maknae) and vocalist of IVE. While her MBTI was initially known as ENFP, there is recent information that it has changed to ESTP.

Gaeul was born on September 24, 2002 (22 years old) in Incheon, South Korea. Standing at 164 cm with blood type B, she plays the role of the reliable eldest sister as IVE's main dancer, lead rapper, and sub-vocalist. Her MBTI is ISTJ, characterized by a cautious and responsible personality. She is usually calm and curious, takes good care of the members, and is a charming artist with unique hobbies like enjoying mystery novels and horror movies.

Wonyoung holds the positions of vocalist, dancer, and visual in IVE. Her MBTI is ENTJ, reflecting a personality with strong leadership and goal-oriented drive. She is an artist who possesses both exceptional stage presence and analytical skills. She is talented in various fields including music, dance, and playing instruments.