Kep1er (케플러; pronounced kepler) is a nine-member South Korean girl group formed through the survival show Girls Planet 999. Kep1er is a temporary group. They debuted on January 3, 2022 and will be promoting for 2.5 years under WAKEONE Entertainment’s and Swing Entertainment’s management.
The members of Kep1er are: Sakamoto Mashiro, Kang Yeseo, Ezaki Hikaru, Seo Youngeun, Choi Yujin, Kim Dayeon, Kim Chaehyun, Shen Xiaoting, and Huening Bahiyyih.
The name Kep1er means capture and one. ‘Ke’ rhymes with ‘capture’ and it represents how the girls were able to capture their dreams. The 1 in the name represents how the members got together and became the one and best group.
| Kep1er | Profile |
|---|---|
| No. Members | 9 |
| Members | Sakamoto Mashiro, Kang Yeseo, Ezaki Hikaru, Seo Youngeun, Choi Yujin, Kim Dayeon, Kim Chaehyun, Shen Xiaoting, and Huening Bahiyyih |
| Oldest Member | Choi Yujin (born Aug 12, 1996) |
| Youngest Member | Kang Yeseo (born Aug 22, 2005) |
| Leader | Yujin |
| Co-leader | Mashiro |
| Debut | January 3, 2022 |
| Fandom | Kep1ian |
Kep1er Member Ages
Kep1er Age Ranking
Ranked from oldest to youngest.
| Member | Birthday | Age |
|---|---|---|
| 1. Yujin | Aug 12, 1996 | 28 years old |
| 2. Shen Xiaoting | Nov 12, 1999 | 25 years old |
| 3. Sakamoto Mashiro | Dec 16, 1999 | 25 years old |
| 4. Kim Chaehyun | Apr 26, 2002 | 22 years old |
| 5. Kim Dayeon | Mar 02, 2003 | 21 years old |
| 6. Ezaki Hikaru | Mar 12, 2004 | 20 years old |
| 7. Huening Bahiyyih | Jul 27, 2004 | 20 years old |
| 8. Seo Young Eun | Dec 27, 2004 | 20 years old |
| 9. Yeseo | Aug 22, 2005 | 19 years old |
Kep1er Member Heights
Kep1er Height Ranking
Ranked from tallest to shortest.
| Member | Height |
|---|---|
| 1. Shen Xiaoting | 1.68 m (5’6″) |
| 2. Huening Bahiyyih | 1.67 m (5’6″) |
| 3. Yujin | 1.63 m (5’4″) |
| 4. Kim Chaehyun | 1.61 m (5’3″) |
| 5. Kim Dayeon | 1.58 m (5’2″) |
| 6. Seo Young Eun | 1.58 m (5’2″) |
| 7. Sakamoto Mashiro | 1.58 m (5’2″) |
| 8. Yeseo | 1.57 m (5’2″) |
| 9. Ezaki Hikaru | 1.55 m (5’1″) |
Members
Kep1er is composed of nine members born between 1996 and 2005. Their names are: Sakamoto Mashiro, Kang Yeseo, Ezaki Hikaru, Seo Youngeun, Choi Yujin, Kim Dayeon, Kim Chaehyun, Shen Xiaoting and Huening Bahiyyih.
Kep1er has 6 South Korean members, 1 Chinese member, and 2 Japanese members. Kang Yeseo, Seo Youngeun, Dayeon, Choi Yujin, and Kim Chaehyun are South Korean. Huening Bahiyyih was born in Korean but is of mixed ethnicity. Ezaki Hikaru and Sakamoto Mashiro are Japanese. Shen Xiaoting is the only Chinese member.
The oldest member of Kep1er is Choi Yujin (born Aug 12, 1996). She was 25 years old when she was competing in Girls Planet 999. The youngest member is Kang Yeseo (born Aug 22, 2005). She was 16 years old when she was competing in Girls Planet 999.
Positions
The official position of leader is held by Yujin. The co-leader is Mashiro.
These are the positions of each of Kep1er’s members:
| Member | Positions |
|---|---|
| Kim Chaehyun | center, main vocalist |
| Huening Bahiyyih | vocalist |
| Choi Yujin | leader, vocalist |
| Kim Dayeon | main dancer, rapper |
| Seo Youngeun | vocalist, rapper, dancer |
| Kang Yeseo | vocalist, dancer, maknae |
| Ezaki Hikaru | main rapper, dancer |
| Sakamoto Mashiro | co-leader, lead vocalist |
| Shen Xiaoting | vocalist, visual |
Final Ranking from Girls Planet 999
These are the final rankings from Girls’ Planet 999, which determined the final members of Kep1er:
| Ranking | Member | Votes |
|---|---|---|
| 1 | Kim Chaehyun | 1,081,182 |
| 2 | Huening Bahiyyih | 923,567 |
| 3 | Choi Yujin | 915,722 |
| 4 | Kim Dayeon | 885,286 |
| 5 | Seo Youngeun | 781,657 |
| 6 | Kang Yeseo | 770,561 |
| 7 | Ezaki Hikaru | 713,322 |
| 8 | Sakamoto Mashiro | 708,149 |
| 9 | Shen Xiaoting | 700,663 |
Kim Suyeon ranked 10th place. Guinn Myah ranked in 11th place.
Fun Facts and Trivia
- Girls Planet 999 had 99 contestants in total divided in three different groups with 33 contestants each: the K-Group (Korean), C-Group (Chinese), and the J-Group (Japanese).
- Several members debuted in other groups prior to debuting with Kep1er. Kang Yeseo was part of Busters. Choi Yujin was a member of CLC. Ezaki Hikaru was a member of +GANG.
- Several members participated in survival shows before winning Girls Planet 999. Kim Dayeon was in Produce 48. Shen Xiaoting was in Produce Camp 2020.
- The tallest member of Kep1er is Shen Xiaoting with a height of 168 cm.
- The shortest member of Kep1er is Ezaki Hikaru with a height of 154.5 cm.
- There is an age gap of 9 years between the oldest member (Yujin) and the youngest member (Yeseo).
- There is a height gap of 13 cm between the tallest member (Xiaoting) and the shortest member (Hikaru).
Choi Yujin
- Birthday: Aug 12, 1996
- Country of Birth: South Korea
- Height: 163 cm (5’4″)
- Zodiac: Leo
- MBTI: ENFP
- Hobbies: pilates, watching movies.
- Specialty: Japanese.
Choi Yujin is the oldest member and the leader of Kep1er. She is a former member of the Kpop group CLC. Yujin was part of the dance line. She ranked #3 in the final episode of Girls Planet 999.
Shen Xiaoting
- Birthday: Nov 12, 1999
- Country of Birth: China
- Height: 168 cm (5’6″)
- Zodiac: Scorpio
- MBTI: ISFJ
- Hobbies: watching movies.
- Specialty: dancing.
Shen Xiaoting is the only Chinese member that made the final lineup of Kep1er. She was one of the most popular members among international fans. She was voted the prettiest member by the contestants of Girls Planet 999. Prior to Kep1er, she participated in Camp 2020. She also won a gold prize and ranked #1 in a modern dance competition in Shanghai. She ranked #9 in Girls Planet 999.
Sakamoto Mashiro
- Birthday: Dec 16, 1999
- Country of Birth: Japan
- Height: 158 cm (5’2″)
- Zodiac: Sagittarius
- MBTI: INFP
- Hobbies: playing with cats, walking.
- Specialty: cooking, dancing, staying still without doing or thinking about anything.
Sakamoto Mashiro is the co-leader of Kep1er. She was a trainee from JYP Entertainment. She trained alongside ITZY members. She stayed with the company for 2 years and left in 2018. She won the most votes from the J Group during the pre-broadcast one-pick voting. Prior to Girls Planet 999, she had been living in Korea for over 5 years. Her final ranking was #8.
Kim Chaehyun
- Birthday: Apr 26, 2002
- Country of Birth: South Korea
- Height: 1601cm (5’3″)
- Zodiac: Taurus
- MBTI: ESFP
- Hobbies: dancing, exercising, others.
- Specialty: vocal, DIY, Japanese.
Kim Chaehyun was ranked #1 in the finale of Girls Planet 999. She is a former SM Entertainment trainee. Her specialty is singing. She became a trainee in her second year of middle school. She trained for 6 years prior to joining Girls Planet 999.
Kim Dayeon
- Birthday: Mar 2, 2003
- Country of Birth: South Korea
- Height: 158 cm (5’2″)
- Zodiac: Pisces
- MBTI: ESTP
- Hobbies: walking while listening to music.
- Specialty: dance.
Kim Dayeon is a former contestant in Produce 48 (2018). She ranked #70. She was a trainee for 8 months before joining Produce 48. She trained under CNC School (2017-2018). She acted in the drama Famous Princesses (2006). Her final ranking in Girls Planet 999 was #4.
Ezaki Hikaru
- Birthday: Mar 12, 2004
- Country of Birth: Japan
- Height: 154.5 cm (5’1″)
- Zodiac: Pisces
- MBTI: ESFJ
- Hobbies: relaxing in the hot spring.
- Specialty: eating deliciously, rapping.
Ezaki Hikaru is one of the two Japanese members in Kep1er. Her specialties are rapping and dancing. Her charming point is her smile (which looks like a sloth). She was the center of the J-Group’s introduction video in Girls Planet 999. Her final ranking was #7.
Huening Bahiyyih
- Birthday: Jul 27, 2004
- Country of Birth: Korea
- Height: 167 cm (5’6″)
- Zodiac: Leo
- MBTI: ESFJ
- Hobby: diary decoration, shopping.
Huening Bahiyyih was born in South Korea. Bahiyyih is part Polish, British and German from her father, and Korean from her mother. She is the youngest of 3 siblings. She is the sister of Huening Kai from TXT and Lea from from VIVA. She ranked #2 in the finale of Girls Planet 999.
Seo Young Eun
- Birthday: Dec 27, 2004
- Country of Birth: South Korea
- Height: 158 cm (5’2″)
- Zodiac: Capricorn
- MBTI: ENTJ
- Hobbies: choreography copy, collecting perfumes.
- Specialty: hip hop dance, boy group dance.
Seo Young Eun is the second youngest member of Kep1er. During Girls Planet 999, she showed her multiple talents in singing, dancing, and rapping. She quickly impressed fans with her rendition of NCT’s Kick It early on in the show. Her final rank in Girls Planet 999 was #5.
Kang Yeseo
- Birthday: Aug 22, 2005
- Country of Birth: South Korea
- Height: 157 cm (5’2″)
- Zodiac: Leo
- MBTI: ENFJ
- Hobbies: drawing, watching webtoons, watching movies.
- Specialty: acting, finger training.
Kang Yeseo is the youngest member (maknae) of the group. She is a former member of the kid’s group QTL and was a member of the Kpop group Busters. She was only 13 years old when she debuted with Busters. Her final ranking in Girls Planet 999 was #6.