even before PRODUCE 48, each girls are already known individually in woollim stans because some of them were back-up dancer of Lovelyz and already debuted, participated in W Project and featured in Dongwoo's song and some of the fans sometimes saw the girls' outside the building which made them become called woollim girls.

some of the members participated in MNET's 3rd produce show, PRODUCE 48. they are four wgs that participated there and the two of them debuted in the line up for pd48.

after PRODUCE 48, Woollim created an account for their trainees and was officially launched. their first post was about them tgt with eunbi and chaewon in their subway ad at 2nd of aguest, 2018 and the girls' seldomly post in that account and the fans often made jokes about it that they were locked up in the basement.

as their debut is approaching, the hidden card which was yeonhee, her audition video which she sang BoA's Atlantic Princess was spread thoughout the woollim stans when the girls' profile was released in woollim rookie account in 25th of april 2019.

wgs became a really hot topic and gained public's interest again after juri exclusively joined woollim ent. after her graduation in akb48. after that, a lots of people became interested and expect how will they do well in their debut.

their official fandom name is KETCHY (켓치), taking out the 2nd (rocKET)(로켓펀치) and the 4th (punCHY)(로켓펀치) letter which means exciting and attracting. It is also pronounced as catchy, means that rcpc is important existence to fans, it was announced on 6th of January 2020 on their official twitter account.

they are the only woollim artist that has no official positions and fans are predicting that woollim is still waiting for the other woollim girls, eunbi and chaewon (who debuted in izone), to be added and announce the positions.

they are only group that all members used their real name as their stage name among woollim artists.