Kep1er (; ) is a South Korean
girl group
A girl group is a music act featuring several female singers who generally harmonize together. The term "girl group" is also used in a narrower sense in the United States to denote the wave of American female pop music singing groups, many of who ...
formed through the
Mnet reality survival competition show ''
Girls Planet 999'' in 2021 and managed by
Swing Entertainment and
Wake One Entertainment. The group is composed of nine members: Kim Chae-hyun, Huening Bahiyyih,
Choi Yu-jin, Kim Da-yeon, Seo Young-eun,
Kang Ye-seo, Hikaru Ezaki, Mashiro Sakamoto, and Shen Xiaoting. They made their official debut on January 3, 2022, with the
extended play
An extended play record, usually referred to as an EP, is a musical recording that contains more tracks than a single but fewer than an album or LP record. (EP) ''
First Impact''.
Name
"Kep1er" was a name suggested by viewers of ''
Girls Planet 999'' through the website
Naver
Naver (Hangul: 네이버) is a South Korean online platform operated by the Naver Corporation. It was launched in 1999 as the first web portal in South Korea to develop and use its own search engine. It was also the world's first operator to i ...
. The name is a reference to the planets in the Kepler star systems named after the 16th century astronomer
Johannes Kepler.
The name is also kept in relation to ''Girls Planet 999'' by continuing the show's cosmic theme.
History
Formation through ''Girls Planet 999''
Kep1er was formed through the
Mnet reality survival show ''
Girls Planet 999'', which aired from August 6 to October 22, 2021. The show brought 99 contestants from
China,
Japan and
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...
to compete to debut in a multinational girl group. Out of initially 99 contestants, only the top nine would make the final lineup.
Before the show began, several group members had already been active in the entertainment industry.
Choi Yu-jin made her debut in the
Cube Entertainment girl group
CLC on March 19, 2015 with the group's
extended play
An extended play record, usually referred to as an EP, is a musical recording that contains more tracks than a single but fewer than an album or LP record. (EP) ''
First Love''; she was on hiatus from CLC due to activities with Kep1er until their disbandment. In 2010,
Kang Ye-seo was a member of the girl group CutieL before joining
Busters from 2019 to 2020.
Kim Da-yeon participated in ''
Produce 48
''Produce 48'' () was the third season of the South Korean reality competition series '' Produce 101''. It was a large-scale project in which the public "produces" a girl group by voting for members out of a pool of 96 contestants from South Ko ...
'' in 2018, representing CNC Entertainment, while Shen Xiaoting participated in ''
Produce Camp 2020'', representing Top Class Entertainment. Both were eliminated in the first round, placing 70th and 80th in their respective shows. Mashiro Sakamoto, a trainee at
JYP Entertainment
JYP Entertainment Corporation () is a South Korean multinational entertainment and record label conglomerate founded in 1997 by J. Y. Park. It is one of the largest entertainment companies in South Korea, and operates as a record label, tale ...
from 2016 to 2018, appeared in the first episode of the Mnet reality survival show ''
Stray Kids
Stray Kids (; often abbreviated as SKZ) is a South Korean boy band formed by JYP Entertainment through the 2017 Stray Kids (TV series), reality show of the same name. The group is composed of eight members: Bang Chan, Lee Know, Changbin, Hyunji ...
'' as part of the female trainee team, but did not progress past the first episode. Following ''Produce 48'', Da-yeon left CNC Entertainment and signed with Stardium Entertainment, only to leave once more after her debut plans fell through. Xiaoting was a competitive
ballroom
A ballroom or ballhall is a large room inside a building, the primary purpose of which is holding large formal parties called balls. Traditionally, most balls were held in private residences; many mansions and palaces, especially historic ma ...
and
modern dancer, having won a gold medal in a modern dance sport competition in Shanghai, as well as ranking sixth globally in a British competition.
2021–present: ''First Impact'', ''Queendom 2'', ''Doublast'', Japanese debut, and ''Troubleshooter''
Kep1er was originally scheduled to debut on December 14, 2021, with pre-orders for their EP ''First Impact'' having begun on November 29. They were also initially scheduled to perform at the
2021 Mnet Asian Music Awards on December 11. However, it was announced that the group's scheduled debut had been delayed to January 3, 2022 after one of their staff members tested positive for
COVID-19
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by a virus, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The first known case was identified in Wuhan, China, in December 2019. The disease quickl ...
.
Their performance at the 2021 Mnet Asian Music Awards was also cancelled. On December 14, it was revealed that group members Mashiro and Xiaoting tested positive for COVID-19 and were announced to have fully recovered on December 26.

On January 3, 2022, Kep1er released their debut EP ''
First Impact'', with "
Wa Da Da" serving as lead single. On January 10, 2022, Chae-hyun was announced as the new co-host for
SBS MTV
SBS M is a South Korean pay television music channel owned by SBS Medianet, a division of SBS Media Holdings. It features South Korean pop artists, international music, news, and a few reality and variety programs.
It was launched in 2001 as ...
's music program ''
The Show'' alongside
Ateez's Yeosang and
Cravity's Minhee. On January 13, 2022, Kep1er won their first music program award on ''
M Countdown
''M Countdown'' () is a South Korean music program broadcast by Mnet. The show features appearances by popular music artists who also perform live on stage. It is broadcast from CJ E&M Center Studio in Sangam-dong, Mapo District, Seoul.
...
'' with "Wa Da Da". On February 21, 2022, it was confirmed that Kep1er will participate in the second season of the
Mnet reality competition show ''
Queendom'', scheduled to premiere in March 2022.
On June 20, 2022, Kep1er released their second EP ''
Doublast'', with "
Up!" serving as the lead single.
On August 3, 2022, Kep1er released their first Japanese single ''
Fly-Up'', featuring "Wing Wing" as lead track. It was released on September 7, 2022.
On September 23, 2022, Kep1er released the promotional single "Sugar Rush" through
Universe Music.
On October 13, 2022, Kep1er released their third EP ''
Troubleshooter'' with "
We Fresh" serving as the lead single.
Endorsements
On February 15, 2022, Kep1er became models for South Korean cosmetics brand S2ND.
Members
*
Choi Yujin () – leader
* Shen Xiaoting (; )
* Mashiro Sakamoto (; ) – co-leader
* Kim Chaehyun ()
* Kim Dayeon ()
* Hikaru Ezaki (; )
* Huening Bahiyyih ()
* Seo Youngeun ()
*
Kang Yeseo ()
Discography
Extended plays
Singles
Promotional singles
Other charted songs
Videography
Music videos
Filmography
Reality shows
Awards and nominations
Notes
References
External links
*
* at
Wake One Entertainment
{{DEFAULTSORT:Kep1er
Girls Planet 999
Musical groups from Seoul
2021 establishments in South Korea
Musical groups established in 2021
Singing talent show winners
South Korean girl groups
K-pop music groups
South Korean dance music groups
South Korean pop music groups
Swing Entertainment artists
Wake One Entertainment artists