Debut: August 7th 2013
Agency: Mafia Records
Members: Nari, Jiae, Sujin, Woojoo
MV’s: WA$$UP, Hotter Than A Summer, Nom Nom Nom, La Pam Pam Pa
Jingle Bell, Shut Up U, Stupid Liar, Color TV
Current Status: Disbanded (2019)
Fanclub: WAFFLE
CURRENT MEMBERS:
Stage Name: Nari (나리)
Real Name: Kim Nari (김나리)
Birthday: October 5, 1992
Nationality: Korean
Height/Weight: 5’4″/105lbs
Blood Type: B
Position: Leader, Vocal, Rap, Dance
Stage Name: Jiae (지애)
Real Name: Kim Jiae (김지애)
Birthday: October 31, 1995
Nationality: Korean
Height/Weight: 5’6″/108lbs
Blood Type: O
Position: Main Vocal
Stage Name: Sujin (수진)
Real Name: Bang Sujin (방수진)
Birthday: June 26, 1996
Nationality: Korean
Height/Weight: 5’4″/103lbs
Blood Type: AB
Position: Vocal, Rap
Stage Name: Woojoo (우주)
Real Name: Kim Woojoo (김우주)
Birthday: August 12, 1996
Nationality: Korean
Height/Weight: 5’4″/102lbs
Blood Type: A
Position: Vocal, Maknae
FORMER MEMBERS:
Stage Name: Jinju (진주)
Real Name: Park Jinju (박진주)
Birthday: April 28, 1990
Nationality: Korean
Height/Weight: 5’3″/105lbs
Blood Type: AB
Position: Leader, Main Vocal
Stage Name: Da In (다인)
Real Name: Song Jieun (송지은)
Birthday: June 25, 1990
Nationality: Korean
Height/Weight: 5’6″/110lbs
Blood Type: O
Position: Vocal, Rap, Dance
Stage Name: Nada (나다)
Real Name: Yoon Yejin (윤예진)
Birthday: May 24, 1991
Nationality: Korean
Height/Weight: 5’3″/110lbs
Blood Type: B
Position: Rap, Dance
Color Coded Heaven 
wojoo is lead vocal
There is no official statement stating that Woojoo is a Lead Vocal for the group.
As far as we can see she’s just a regular Vocalist while Jinju, Nari and Jiae are the group’s Lead Vocals.
Some sites state Da In is a Lead Vocal, but she gets less lines than most of the girls so unless you have actual information from daum, their cafe or their label then we cannot change the information here.