BABYMONSTER is composed of 7 members born between 2002 and 2009. Their ages ranged from 14 to 21 years old at the time of the group's final lineup announcement. The oldest member is Ruka (born Mar 20, 2002). She was 20 years old at the time of the group's reveal. The youngest member (maknae) is Chiquita (born Feb 17, 2009). She was 13 years old when the group was revealed to the public. There is an age gap of 7 years between the oldest member and the youngest member of BABYMONSTER.
The members of BABYMONSTER are Rami, Chiquita, Pharita, Ruka, Asa, Ahyeon, and Rora. Ahyeon was part of the evaluation and selection process but was not included in the final debuting lineup due to health reasons.
