Debut: 17.08.30.
Label: C9 Entertainment
Debut song: Rolly
Good Morning (sub-unit) members:
Genie (Kim Ji Won) - Vocal
NaYoon (Hwang Na Yoon) - Vocal
JiWon (Kim Ji Won) - Vocal
BoMin (Kim Bo Min) - Vocal
Lucky (Jin Hyun Jun) - Vocal, Maknae
Good Night (sub-unit) members:
HeeJin (Song Hee Jin) - Leader, Vocal
HaEun (Kim Ha Eun) - Vocal
Midnight (sub-unit) members:
Cherry (Kim Chae Young) - Dance
ChaeSol (Moon Chae Sol) - Vocal
Viva (Hwang Ji Won) - Rap