Loona yyxy is a sub-unit of Loona. The sub-unit consists of 4 members: Yves, Chuu, Gowon and Olivia Hye. They debuted on May 30, 2018 with the song "love4eva".

Stage Name: Yves / 이브
Real Name: Ha Sooyoung / 하수영

Nickname: Hasu, Suguyam and Subongi
Birthday: May 24, 1997
Birthplace: Busan, South Korea
Blood Type: B
Height: 166 cm

Weight: 46 kg
Position in group: Leader, Main Dancer, Lead Vocalist, Visual
Languages: Korean

Siblings: one older sister
Introduced in November 2017

She is represented by a swan

Her designed color is burgundy

Debut solo song: New

Stage Name: Chuu / 츄
Real Name: Kim Jiwoo / 김지우

Birthday: October 20, 1999
Birthplace: South Korea
Blood Type: A
Height: 160 cm

Position in group: Main Vocalist
Languages: Korean

Siblings: 2 younger brothers

Education: Hanlim Multi Art School

Introduced in December 2017

She is represented by a penguin

Her designed color is peach

Debut solo song: Heart Attack

Stage Name: Go Won / 고원
Real Name: Park Chaewon / 박채원

Nickname: ChaCha

Birthday: November 19, 2000
Birthplace: South Korea
Blood Type: A

Position in group: Main Rapper, Lead Dancer, Vocalist
Languages: Korean

Hobbies: playing Nintendo

Education: Incheon’s Haneul Academy, Lp Dance Academy

Siblings: one older brother and one older sister

Introduced in January 2018

She is represented by a butterfly

Her designed color is eden green

Debut solo song: One&Only

Stage Name: Olivia Hye / 올리비아혜
Real Name: Son Hyejoo / 손혜주

Birthday: November 13, 2001
Birthplace: South Korea

Height: 166 cm

Position in group: Lead Dancer, Lead Vocalist, Maknae

Languages: Korean

Education: Sungshin Girls’ High School

Siblings: one older sister

Introduced in March 2018

She is represented by a wolf

Her designed color is grey and black

Debut solo song: Egoist