Here's an overview of groups that have added members too their groups in 2018 so far!

1. 24K - Kiyong

2. Alpha:BAT - L:ambda

3. A.Z.M - Yeji (left the group), Simlok and Sowon

4. BABA - Loha, Seungha, Byeolbit and Maum

5. Baby Boo - Hajin and Jelly/Lily (they either left the group or the group disbanded)

6. BADKIZ - Sol-B (left the group), Hayoung, Hanbit and Sihyun

7. Chic Angel - Dayeon and Sia

8. FlaShe - Seryeong (formerly of Vetty-L) and Soojin

9. GIAM - Jun

10. G-Reyish - Hyeji

11. Heymiss - Amin (formerly of CUPID, Honey Girls and Fantastie), Naru, Hyunji (formerly of Double B and Fantastie) and Seula

12. Hi Cutie - Eungi

13. H.U.B - Chehee, Seoryeong and Yebin

14. I.C.E - Ujin

15. Icia - Bandi (formerly of Scarlet as Rabyeol, Pocket Girls as Junhee, Cupid as Dohee and solo) and Yoomin

16. Jelly Girl - Solbi and Seuli

17. Lipbubble - Ella, Winy and Lia

18. NCT - Kun

19. NCT U - Lucas and Jungwoo

20. NCT 127 - Jungwoo

21. Pocket Girls - Celine

22. Sha Sha - Chaki, Wanlin and Hakyung

23. Six Bomb - I Sol (formerly of I-Ren as Lee Jin)

24. The Singing Girls - Sena (Park Minseon, left the group), Eunbee (left the group), Lahee (Kim Ahyeon, left the group), Jiyeon (left the group), Sophie (Haena), Hyein, Rookie, (Kim Hyeoyeon), Aya (Hong Ahreum) and Seungji

25. Trei - Juntae

26. Tweety - Hanul (left the group), Boreum and Chaea

27. Vermuda - Junon