| Origin |
Seoul, South Korea |
| Debut |
January 12, 2024 |
| Disbanded |
N/A |
| Sub Unit |
Team A, Team B |
| Number of Members |
8 |
| Members |
Youyi
Yooran
Seojung
Jooa
Yejin
Jooha
Liya
Seoyoon |
| Oldest Member |
Youyi |
| Youngest Member (Maknae) |
Seoyoon |
ON1 ROOKIES Former Members Profile
Youyi
| Full Name |
N/A |
| Birthday |
May 01, 2010 |
| Birthplace |
N/A |
| Age |
16 years and 5 months old |
| Height |
4 feet 11 inches (150 cm) |
| Weight |
90 lbs (41 kg) |
| Zodiac Sign |
Taurus |
| MBTI |
ENFP/ESFP |
| Position |
Leader of Team A |
| Instagram |
iiistariii12 |
Yooran
| Full Name |
Shin Yooran |
| Birthday |
May 10, 2010 |
| Birthplace |
N/A |
| Age |
16 years and 5 months old |
| Height |
5 feet 3 inches (159 cm) |
| Weight |
86 lbs (39 kg) |
| Zodiac Sign |
Taurus |
| Position |
Leader of Team B |
| Instagram |
@shin__yooran |
Seojung
| Full Name |
Park Seojung |
| Birthday |
August 05, 2010 |
| Birthplace |
N/A |
| Age |
16 years and 2 months old |
| Height |
N/A |
| Zodiac Sign |
Leo |
| MBTI |
ENFP |
Jooa
| Full Name |
Park Jooa |
| Birthday |
September 18, 2010 |
| Birthplace |
N/A |
| Age |
16 years old |
| Height |
5 feet 4 inches (163 cm) |
| Weight |
101 lbs (46 kg) |
| Zodiac Sign |
Virgo |
| MBTI |
ESFP |
| Instagram |
@joochaeyul_danbi |
Yejin
| Full Name |
Kim Yejin |
| Birthday |
December 16, 2010 |
| Birthplace |
N/A |
| Age |
15 years and 9 months old |
| Height |
N/A |
| Zodiac Sign |
Sagitarius |
| MBTI |
ENFP |
Jooha
| Full Name |
Song Jooha |
| Birthday |
April 06, 2011 |
| Birthplace |
N/A |
| Age |
15 years and 6 months old |
| Height |
N/A |
| Zodiac Sign |
Aries |
| MBTI |
ESTP |
Liya
| Full Name |
Park Victoria |
| Birthday |
August 19, 2011 |
| Birthplace |
N/A |
| Age |
15 years and 1 month old |
| Height |
N/A |
| Zodiac Sign |
Leo |
| MBTI |
ENFP |
| Instagram |
liya._.pak |
Seoyoon
| Full Name |
Jeon Seoyoon |
| Birthday |
June 22, 2012 |
| Birthplace |
N/A |
| Age |
14 years and 3 months old |
| Height |
5 feet 0 inches (153 cm) |
| Weight |
83 lbs (38 kg) |
| Zodiac Sign |
Cancer |
| MBTI |
ENTP |
| Position |
Maknae |
| Instagram |
@seo_yoon0622 |
Member Ages: Oldest to Youngest
| Member |
Birthday |
Age |
| Youyi |
May 01, 2010 |
16 years, 5 months, 12 days old |
| Yooran |
May 10, 2010 |
16 years, 5 months, 3 days old |
| Seojung |
August 05, 2010 |
16 years, 2 months, 8 days old |
| Jooa |
September 18, 2010 |
16 years, 25 days old |
| Yejin |
December 16, 2010 |
15 years, 9 months, 27 days old |
| Jooha |
April 06, 2011 |
15 years, 6 months, 7 days old |
| Liya |
August 19, 2011 |
15 years, 1 month, 24 days old |
| Seoyoon |
June 22, 2012 |
14 years, 3 months, 21 days old |
FAQs
How many members are in ON1 ROOKIES?
ON1 ROOKIES is a 8-member K-pop girl group. The group consists of Youyi, Yooran, Seojung, Jooa, Yejin, Jooha, Liya, and Seoyoon.
When did ON1 ROOKIES debut?
ON1 ROOKIES debuted on January 12, 2024, with their song ROONIVERSE.
