Kep1er Members Profile, Fandom and Debut Single WA DA DA


Take a Peek at Kep1er Members and Kep1er members position Profile!

In early 2022, a South Korean girl group was formed through a survival show program on Mnet, Girls Planet 999, named Kep1er. This group is temporary, and they will be promoting for only 2.5 years. Kep1er consists of 9 members, and some of them are already popular and have participated in other survival shows previously. Also, there’s a member of CLC! Here’s Kep1er’s group profile!

Group name: Kep1er (케플러/Kepler)

Labels: WAKEONE Entertainment & Swing Entertainment

Members: 9 (Nine)

Debut year: 2022

Official colors: Lavender & white

Fandom name: Kep1ian (케플리안)

Official website:

Weibo: @official_kep1er

Twitter: @official_kep1er

Facebook: Kep1er

Instagram: @official.kep1er

TikTok: @official_kep1er

VLive: Kep1er

YouTube: Kep1er

Fancafe: Kep1er

To learn more about them, especially the members and Kep1er’s members’ positions, you can check out their information through the Byeol Korea article below!

Kep1er Yujin Profile

Name: Choi Yu Jin (최유진)

Stage name: Yujin (유진)

Birthday: August 12, 1996

Birthplace: Jeonju, North Jeolla Province, South Korea

Height: 162 cm (5’3″)

Weight: 42 kg

Position: Leader, vocalist

Zodiac: Leo

Chinese zodiac: Rat

Blood type: A

Nationality: Korean

Kep1er Yujin Facts

  • Yujin is a member and a lead dancer of CLC.
  • Yujin is the leader of Kep1er.
  • On November 23, 2021, her photo has uploaded by Kep1er as the first photo concept.
  • She can speak Japanese.
  • She got 915,722 points in the final result of Girls Planet 999 and ranked 3rd.
  • Yujin’s origin company is Cube Entertainment.
  • In the survival show Girls Planet 999, she was the oldest.
  • She has a younger brother who was born in 1999.
  • ENFP-T is her MBTI type.
  • When she feels stressed, she listens to music, walks around, and exercises.
  • Her parents are her role models.

Kep1er Mashiro Profile

Name: Sakamoto Mashiro (坂本 舞白)

Stage name: Mashiro (마시로)

Birthday: December 16, 1999

Birthplace: Tokyo, Japan

Height: 157 cm (5’2″)

Weight: 47 kg

Position: Co-leader, lead vocalist

Zodiac: Sagittarius

Chinese zodiac: Rabbit

Blood type: AB

Nationality: Japanese

Kep1er Mashiro Facts

  • She is an only child.
  • INFP is her MBTI type.
  • She got 708,149 points in Girls Planet 999 and ranked 8th.
  • Mashiro is the 3rd member whose photo concept was revealed by Kep1er.
  • From 2016 to 2018, she was a trainee under JYP Entertainment so she is very close with ITZY members.
  • In 2019, she moved to Pledis Entertainment until 2020.
  • In 2021, she joined 143 Entertainment.
  • Mashiro is good at dancing and cooking.
  • Her nicknames are Mashmallow and Shiro.
  • Mashiro’s charming point is her dimple.
  • Purple and blue are her favorite colors.
  • She tested positive for COVID-19 on December 14, 2021.
  • Blackpink is her role model.
  • Mashiro wants to learn Mandarin.

Kep1er Xiaoting Profile

Name: Shen Xiao Ting (沈小婷)

Stage name: Xiaoting (샤오팅)

Birthday: November 12, 1999

Birthplace: Chengdu, Sichuan Province, China

Height: 168 cm (5’6″)

Weight: 53 kg

Position: Visual, vocalist

Zodiac: Scorpio

Chinese zodiac: Rabbit

Blood type: AB

Nationality: Chinese

Kep1er Xiaoting Facts

  • Xiaoting graduated from Sichuan Conservatory of Music University majoring in Performance.
  • She won 4th place in group modern dance in the 2013 CBDF China Cup Tour Finals when she was 14.
  • She has been under Top Class Entertainment since 2018.
  • Her specialty is ball dancing.
  • Xiaoting is a former contestant of the Chinese survival show Produce Camp 2020, and she was eliminated in episode 4 at rank 80.
  • She tested positive for COVID-19 on December 14, 2021.
  • In the final results of Girls Planet 999, Xiaoting got 700,663 points and ranked 9.
  • Xiaoting has an older sister.
  • Her role model is her mother.

Kep1er Chaehyun Profile

Name: Kim Chae Hyun (김채현)

Stage name: Chaehyun (채현)

Birthday: April 26, 2002

Birthplace: Busan, South Korea

Height: 160 cm (5’3″)

Weight: 47 kg

Position: Main vocalist, Center

Zodiac: Taurus

Chinese zodiac: Horse

Blood type: B

Nationality: Korean

Kep1er Chaehyun Facts

  • ESFP is her MBTI type.
  • She was ranked 1 in the finals of Girls Planet 999 and got 1,081,182 points.
  • Chaehyun was in SM Entertainment for four years.
  • When she was in her second year of middle school, she became a trainee until she dropped out of school.
  • Chaehyun can speak Japanese.
  • She trained for 6 years before joining Girls Planet 999.
  • Chaehyun’s charming point is her vocal tone.
  • She is a big fan of Day6, Seventeen, and SNSD’s Taeyeon.
  • IU is her role model.

Kep1er Hikaru Profile

Name: Ezaki Hikaru (江崎 ひかる)

Stage name: Hikaru (히카루)

Birthday: March 12, 2004

Birthplace: Fukuoka, Japan

Height: 154 cm (5’8″)

Weight: 42 kg

Position: Main rapper, dancer

Zodiac: Pisces

Chinese zodiac: Monkey

Blood type: O

Nationality: Japanese

Kep1er Hikaru Facts

  • Hikaru’s charming point is her smile.
  • ESFJ is her MBTI type.
  • Her final ranking was 7, and she got 713,322 points in Girls Planet 999.
  • From 2016 to 2018, she was a member of the kid trainee duo +GANG.
  • Currently, Hikaru is under Avex’s label.
  • CL is her role model.
  • Hikaru doesn’t like Hawaiian pizza, cheese, soy milk, and milk.
  • Cucumber, yukhoe, soboru rice, and mint chocolate are her favorite foods.
  • Hikaru is really different when she is on and off stage.
  • Yellow and purple are her favorite colors.
  • Hikaru really likes windy weather and spring.

Kep1er Dayeon Profile

Name: Kim Da Yeon (김다연)

Stage name: Dayeon (다연)

Birthday: March 2, 2003

Birthplace: Seoul, South Korea

Height: 158 cm (5’2″)

Weight: 49 kg

Position: Rapper, main dancer

Zodiac: Pisces

Chinese zodiac: Goat

Blood type: A

Nationality: Korean

Kep1er Dayeon Facts

  • Dayeon was a former contestant of Produce 48, and she ranked 70th.
  • She was eliminated in episode 5 of Produce 48.
  • Before joining Produce 48, she was a trainee for 8 months.
  • From 2017 to 2018, Dayeon was a trainee under CNC School.
  • In the final results of Girls Planet 999, Dayeon ranked 4th and got 885,826 points.
  • She attended the School of Performing Arts (SOPA).
  • Dayeon is under Jellyfish Entertainment.
  • In 2006, she acted in the drama Famous Princesses. 
  • Her father is her role model.
  • ESTP is her MBTI type.
  • Walking while listening to music is her hobby.
  • Freestyle dancing is her specialty.
  • She has an Indian dimple, and it’s her charming point.

Kep1er Youngeun Profile

Name: Seo Young Eun (서영은)

Stage name: Youngeun (영은)

Birthday: December 27, 2004

Birthplace: South Korea

Height: 159 cm (5’3″)

Weight: 47 kg

Position: Rapper, dancer, vocalist

Zodiac: Capricorn

Chinese zodiac: Monkey

Blood type: A

Nationality: Korean

Kep1er Youngeun Facts

  • She is the 2nd youngest member of Kep1er.
  • In the final results of Girls Planet 999, Youngeun got 781,651 points and ranked 5th.
  • On July 17, 2021, her official profile was released.
  • ENTJ is her MBTI.
  • Youngeun is under Biscuit Entertainment.
  • Her specialties are hip-hop dancing and boy-group dancing.
  • Collecting perfumes and copying choreography are her hobbies.
  • She has 2 older sisters.
  • BTS is her role model.
  • She was a former trainee under ModernK Music Academy and also a backup dancer of DreamNote.
  • She can impersonate Doraemon.

Kep1er Bahiyyih Profile

Name: Bahiyyih Jaleh Huening (바히에 자레 휴닝)

Stage name: Huening Bahiyyih (휴닝바히에)

Birthday: July 27, 2004

Birthplace: Seoul, South Korea

Height: 167 cm (5’5″)

Weight: 50 kg

Position: Vocalist

Zodiac: Leo

Chinese zodiac: Monkey

Blood type: A

Nationality: Korean-American

Kep1er Bahiyyih Facts

  • Bahiyyih’s father (Nabil David Huening) is British, German, and Polish. Meanwhile, her mother is purely Korean.
  • She was born to be an idol like her two siblings, namely TXT’s Huening Kai and her older sister Lea from VIVA.
  • People think that Bahiyyih’s birthplace is Beijing, Hong Kong. Actually, her family moved to Hong Kong in her early years.
  • In the Girls Planet 999 final results, she got 923,567 points and ranked 2nd.
  • Bahiyyih was the English narrator at the opening of Worldwide Fans Choice at the 2020 Mnet Asian Music Awards.
  • She is under IST Entertainment.
  • Her MBTI type is ESFJ.
  • Baihiyyih attended Lila Arts High School.

Kep1er Yeseo Profile

Name: Kang Ye Seo (강예서)

Stage name: Yeseo (예서)

Birthday: August 22, 2005

Birthplace: Incheon, South Korea

Height: 157 cm (5’2″)

Weight: 42 kg

Position: Vocalist, dancer, maknae

Zodiac: Leo

Chinese zodiac: Rooster

Blood type: A

Nationality: Korean

Kep1er Yesoe Facts

  • She is under 143 Entertainment.
  • In the final results of Girls Planet 999, she ranked 6th and got 770,561 points.
  • She was a member of the kid girl group CutieL.
  • In February 2019, Yeseo was a former member of Busters Beta under TG Entertainment and Marbling E&M Inc.
  • Yeseo debuted with Busters when she was 13.
  • Apart from singing, her specialty is acting. She has also appeared in many dramas and movies such as Miracle in Cell No. 7, Fighting Family, and Diary of Prosecutor. 
  • She attended Lila Arts High School.

Kep1er Released Their Fandom Name


Before officially debuting, Kep1er shared an announcement about their fandom name on Twitter. On January 3, 2022, @official_kep1er released the announcement along with the group and fandom official colors.

Kep1er called their fandom Kep1ian which means people who always support Kep1er. For the group colors, they chose purple and white. Meanwhile, purple and yellow are Kep1ian’s official colors. What a cute name and colors!

Kep1er Debut WA DA DA

After the survival show ended on October 22, 2021, they debuted a new group named Kep1er. In just 2 months, they made preparations. Finally, on January 3, 2022, Kep1er made their debut by releasing their first mini-album FIRST IMPACT.

The mini-album has 6 track songs, and “WA DA DA” became their single. On December 28, 2021, Kep1er released the MV teaser part 1. Meanwhile, for the concept photo, they had already posted it in November. This girl group is using a teen crush concept while still showing their girly sides.

Their group name is the combination of the word “Kep” which means “to catch a dream” and the number one (1). Overall, the group name means the nine girls joined together into one group to be the best.

Although they had to re-schedule their debut date (originally set for December 14, 2021), the public still warmly welcomed their appearance. The “WA DA DA” MV got over 31 million views on YouTube a week after being released. Here is the video!

Kep1er Breaks the Record for Highest 1st-Day Sales of a Girl Band

Kep1er is a newcomer group that successfully set a new record with their mini-album FIRST IMPACT. According to Hanteo Chart, their debut album sold over 200,000 copies within a week of its release. Kep1er also ranked #1 with the most sales of their debut album in the first week of sales. Kep1er also beat out IVE and STAYC’s debut album sales records!

Not only that but their main track “WA DA DA” entered various music charts in many countries, namely the USA, UK, Japan, Australia, Germany, and also some countries of Southeast Asia.

So, that’s the detailed information about Kep1er including the member profiles, debut, and the record for the highest album sales! After reading this article, surely, your curiosity has paid off, and, surely, you are a Kep1er fan now! So, don’t forget to share it with your fellow Kep1ians!