Meet All 13 WJSN Members: Essential Facts Updated for 2025

WJSN members have gone through significant changes since their debut, evolving from a 12-member lineup to their current 10-member configuration. Also known as Cosmic Girls, WJSN debuted on February 25, 2016, with their first extended play "Would You Like?" as a collaborative project between Starship Entertainment and Yuehua Entertainment.

Originally, the cosmic girls members consisted of 12 performers, but Yoo Yeonjung joined on July 11, 2016, expanding the group to 13 members. The wjsn members list underwent another transformation when Chinese members Xuanyi, Cheng Xiao, and Meiqi departed on March 3, 2023, following the expiration of their contracts. Currently, how many wjsn members are there? The group now features ten active performers: EXY, Seola, Bona, Soobin, Luda, Dawon, Eunseo, Yeoreum, Dayoung and Yeonjung.

The wjsn members now represent one of K-pop's most distinctive girl groups, complete with their official fandom name "UJUNG" (meaning "friendship" in Korean) and their signature official colors: Vivid Tangerine, Airforce Blue, and Timberwolf. Additionally, the group expanded their creative range by launching their first sub-unit, WJSN CHOCOME, on October 7, 2020. This comprehensive guide provides essential information about all 13 members who have been part of WJSN's journey.

EXY

At the helm of WJSN stands Chu So-jung, professionally known as EXY (엑시), who serves as the group's capable leader and main rapper.

EXY real name and stage name

Born as Chu So-jung (추소정), EXY adopted her stage name upon joining Cosmic Girls. The name reflects her dynamic personality while maintaining her distinct identity within the wjsn members lineup.

EXY position in WJSN

Within the group's structure, EXY holds several key positions. She functions as the leader, main rapper, lead dancer, and vocalist. Her leadership role came naturally, with members noting that her strong sensibility made her perfect for guiding the team.

EXY birthday and age

EXY was born on November 6, 1995, in Busan, South Korea. Currently 29 years old, she represents the Scorpio zodiac sign in the group's celestial concept.

EXY fun facts

Before becoming one of the prominent wjsn members, EXY trained for 8 years. Initially, she trained as a vocalist before developing an interest in hip-hop and transitioning to rap. Furthermore, she graduated from Dongduk Women's University in August 2020.

EXY participated in the second season of Unpretty Rapstar in 2015, joining in episode 6 before being eliminated in episode 8. Beyond her music career, she appeared in the web drama "The Flatterer" alongside Sistar's Bora.

EXY sub-units

EXY has been active in multiple sub-units throughout her career. She was revealed as part of WJSN's Sweet Unit alongside SeolA and Soobin on December 24, 2015. Subsequently, on May 12, 2021, she debuted as a member of the group's second sub-unit, WJSN THE BLACK.

EXY social media presence

EXY maintains an active online presence through multiple platforms. Fans can connect with her via Instagram (@exy_s2), Twitter (@exy_s2), and Weibo (@wjsnexy). Her social media popularity continues to grow, with over 1 million followers on Instagram.

Seola

The eldest among the cosmic girls members, Kim Hyun-jung (김현정), professionally known as Seola (설아), brings a mature yet vibrant energy to the group dynamic.

Seola real name and stage name

Kim Hyun-jung serves as Seola's birth name, with her stage name occasionally stylized as SeolA in official releases. Throughout her pre-debut phase, she experimented with different stage names including Junmi and SeolHa before settling on Seola.

Seola position in WJSN

Within the group structure, Seola holds the position of lead vocalist. Despite initially wanting to pursue rapping, her exceptional vocal talent guided her toward becoming one of the group's primary voices. Notably, she introduces herself as the "dad" or father figure of the group, indicating her nurturing role among wjsn members.

Seola birthday and age

Born on December 24, 1994, in Hapjeong-dong, Mapo District, Seoul, Seola is currently 30 years old. Interestingly, although her actual zodiac sign is Capricorn, she represents Sagittarius in the group's celestial concept, a decision made to prevent her actual zodiac from clashing with Yeoreum's representative sign.

Seola fun facts

Seola trained for approximately 10 years before debut, making her one of the most experienced wjsn members. She possesses aquaphobia (fear of water) yet maintains her position as the group's "vitamin" due to her energetic personality. Of course, her unique talent for transforming any song into a ballad showcases her musical versatility. In fact, she sang "Stay With Me" with EXO's Chanyeol at KCON Australia.

Seola sub-units

Throughout her career, Seola has participated in multiple sub-units, including:

Sweet Unit (with EXY and Soobin)
WJSN THE BLACK (with EXY, Bona, and Eunseo)
WJMK (with Luda and Weki Meki's Yoojung and Doyeon)
ενύπνιον (The Dreamer)

In January 2024, she made history as the first WJSN member to debut solo with her single album "Inside Out".

Seola social media presence

Fans can connect with Seola through her Instagram (@seola_s), Threads account (@seola_s), and YouTube channel "설아의날들" (Seola's Moments). Her social media platforms offer glimpses into her daily life and occasional song covers.

Bona

Among the wjsn members, Kim Ji-yeon, widely recognized as Bona (보나), stands out as a powerhouse talent who has successfully navigated both the K-pop industry and the acting world.

Bona real name and stage name

Born Kim Ji-yeon (김지연) in South Korea, she adopted the stage name Bona (보나) upon joining WJSN. In Chinese, her name is written as 苞娜, complementing the group's initial Korean-Chinese concept.

Bona position in WJSN

Within the cosmic girls members hierarchy, Bona serves as the group's lead dancer, sub-vocalist, sub-rapper, and visual. Her center position highlights her importance to the group's image, often receiving prioritized screen time during performances and promotional activities.

Bona birthday and age

Bona was born on August 19, 1995, in Daegu, South Korea. Presently 30 years old, she represents the Leo zodiac sign in the group's celestial concept. Her birthplace in Dalseo District remains significant as she occasionally speaks in Daegu dialect when excited or in a hurry.

Bona fun facts

Prior to joining Starship Entertainment, Bona trained under Cube Entertainment for six years, making her total training period approximately seven years. Consequently, she developed close friendships with all BTOB members. Equally impressive, Bona holds a certification in open water scuba diving, demonstrating her adventurous spirit.

Furthermore, she maintains a close friendship with BLACKPINK's Jisoo, who has attended WJSN concerts to support her. Generally known as the "selfie fairy" for her effortlessly cute photos, Bona's personal interests include watching movies, reading books, and gaming.

Bona sub-units

Throughout her career with WJSN, Bona has participated in multiple sub-units:

Wonder Unit (as the leader)
ενύπνιον (The Dreamer)
WJSN THE BLACK (alongside Seola, EXY, and Eunseo)

Bona social media presence

Fans can connect with Bona through her Instagram account @bn_95819, where she shares glimpses of her daily life and career milestones. Her rising popularity became evident when she placed second in Brand Reputation Index's May 2022 report analyzing individual girl group members' brand reputation.

Her acting breakthrough came with her role as Ko Yu-rim, a world champion fencer in the acclaimed tvN drama "Twenty-Five Twenty-One" (2022), followed by significant roles in "Joseon Attorney" (2023) and "Pyramid Game" (2024).

Soobin

Recognized as the "happy virus" of the group, Park Soo-bin (박수빈), professionally known as Soobin (수빈), brings her musical talents and vibrant personality to the wjsn members lineup.

Soobin real name and stage name

Park Soo-bin stands as her birth name , with Soobin serving as her stage name since joining the cosmic girls members. Her nickname "Soobly," meaning "Lovely," reflects her cheerful disposition within the group.

Soobin position in WJSN

Within the group structure, Soobin holds the crucial position of main vocalist. Her powerful yet emotional voice makes her perfectly suited for this role, especially considering her extensive musical background. Moreover, she represents the Virgo zodiac sign in the group's celestial concept.

Soobin birthday and age

Interestingly, Soobin has two birthdays on record. While her official birthday is listed as September 14, 1996, her actual birth date is July 14, 1996. This discrepancy creates a unique situation where her official zodiac sign (Virgo) differs from her actual sign (Cancer). Currently 29 years old, she remains one of the most experienced wjsn members.

Soobin fun facts

Musically gifted, Soobin can play multiple instruments including the piano, violin, and flute. Her father worked as a manager for TV host and comedian Kang Ho-dong and was formerly a ssireum (Korean traditional wrestling) athlete. Currently, he serves as a director at SM C&C.

Uniquely, Soobin trained for approximately 7-8 years before debut, making her one of the longest-training wjsn members. She graduated from the School of Performing Arts (SOPA) alongside Red Velvet's Joy and BAP's Zelo. Additionally, she can perform an impressive pterodactyl impression, as demonstrated on Weekly Idol Ep.234.

Soobin sub-units

Throughout her career, Soobin has participated in multiple sub-units:

Sweet Unit (alongside SeolA and EXY)
WJSN CHOCOME (debuted October 7, 2020 with the single album "Hmph!")
Former member of Y-TEEN (Starship project group with Monsta X)
Participated in GIRL'S RE:VERSE as "Serena" and ranked #5, becoming a member of virtual group Feverse

Soobin social media presence

Fans can connect with Soobin through her Instagram account @soobly_s2 , where she shares glimpses of her daily life and activities. Her social media presence allows followers to experience her genuine personality outside of group activities.

Luda

Petite yet powerful, Lee Lu-da (이루다), known professionally as Luda (루다), stands as one of the most versatile wjsn members with her acting talents complementing her impressive idol career.

Luda real name and stage name

Lee Lu-da serves as her birth name, whereas Luda became her stage name upon joining the cosmic girls members. In Chinese, her name is written as 露多, maintaining the group's multicultural appeal throughout their early years.

Luda position in WJSN

Within the group's structure, Luda holds the position of sub-vocalist and dancer. Her vocal contributions, though not in a main position, remain essential to the group's harmonic balance.

Luda birthday and age

Interestingly, Luda has two recorded birthdays. While her official birthday appears as March 6, 1997, her actual birth date is February 6, 1997. Currently 28 years old, she was born in Seoul, South Korea, specifically in Daebang-dong, Dongjak district.

Luda fun facts

Originally a trainee under SM Entertainment, Luda was surprisingly intended to debut with GFriend before ultimately joining Starship Entertainment. According to members, she ranked as the most popular trainee during their pre-debut days. Nicknamed the "chihuahua from hell" by EXY because of her cute face yet harsh personality, Luda gained recognition for her chicken sound impersonation, earning her the nickname "Lu-dak" ("dak" meaning chicken in Korean).

Luda sub-units

Throughout her career, Luda has participated in multiple sub-units:

WJSN CHOCOME (alongside Dayoung, Soobin, and Yeoreum)
WJMK (alongside Seola and Weki Meki's Yoojung and Doyeon)
Feverse (as Keuang, ranking #5 on GIRL'S RE:VERSE)

Luda social media presence

After deciding not to renew her contract with Starship Entertainment on March 3, 2023, Luda signed with iHQ on April 19, 2023, to focus on acting. Nevertheless, she remains a wjsn member. Fans can follow her Instagram account @e_lludda for personal updates and glimpses into her evolving career.

Dawon

Gifted with powerful vocals and a nurturing personality, Nam Da-won (남다원), professionally known as Dawon (다원), stands as the main vocalist among the wjsn members, bringing both musical talent and care to the group.

Dawon real name and stage name

Nam Da-won serves as her birth name, while Dawon became her stage name upon joining the cosmic girls members. In Chinese, her name is written as 多願 (Duō Yuàn), reflecting the group's initial multicultural concept.

Dawon position in WJSN

Within the group structure, Dawon holds the crucial position of main vocalist. Her powerful singing abilities made her perfectly suited for this role, contributing significantly to the group's musical identity.

Dawon birthday and age

Interestingly, Dawon has two recorded birthdays. While her official birthday appears as April 16, 1997, her actual birth date is May 27, 1997. Currently 28 years old, she represents the Aries zodiac sign in the group's celestial concept, even though her real zodiac sign is Gemini.

Dawon fun facts

Musically talented, Dawon can play both the piano and guitar. She swims in the morning, does physical conditioning at noon, and practices pilates in the evening. Described as the most considerate member, she often cleans up after others and helps take care of the members. Additionally, she serves as WJSN's English spokesperson.

Dawon sub-units

Throughout her career, Dawon has participated in the Natural Unit alongside Luda and Mei Qi. She is also part of ενύπνιον (The Dreamer) sub-unit.

Dawon social media presence

On March 3, 2023, Starship Entertainment announced that Dawon chose not to renew her contract. However, it was later clarified that she would remain part of WJSN. Fans can follow her Instagram account @dawon_hae27 and TikTok @dawon3000 for personal updates and glimpses into her evolving career.

Eunseo

Nicknamed the "Sunlight Girl" for her radiant personality, Son Ju-yeon (손주연), professionally known as Eunseo (은서), brings athletic prowess and versatile talents to the wjsn members lineup.

Eunseo real name and stage name

Son Ju-yeon serves as her birth name, with Eunseo becoming her stage name upon joining the cosmic girls members. Her name in Chinese is written as 恩熙, maintaining the group's multicultural appeal throughout their formative years.

Eunseo position in WJSN

Within the group structure, Eunseo primarily serves as a vocalist and rapper. Essentially, some sources identify her more specifically as lead rapper, lead dancer, and sub-vocalist, highlighting her versatility within the group's performance dynamic.

Eunseo birthday and age

Born on May 27, 1998, in Incheon, South Korea, Eunseo is currently 27 years old. Fittingly, she represents the Gemini zodiac sign in the group's celestial concept, perfectly aligning with her actual birth sign.

Eunseo fun facts

Standing at 170 cm (5'7"), Eunseo possesses impressive musical talents, able to play piano, guitar, drums, and tambourine. Undoubtedly athletic, she ranks as the fastest runner among WJSN members and once won Bronze at ISAC. Interestingly, she was classmates with BTS's Jungkook and is a former Pledis trainee.

Eunseo sub-units

Throughout her career, Eunseo has participated in multiple sub-units:

Joy Unit
WJSN THE BLACK (alongside Seola, EXY, and Bona)
Y-TEEN (Starship project group with Monsta X)
αγυρτης (The Imposter) and φορευς (Dream Carrier)

Eunseo social media presence

Fans can connect with Eunseo through her Instagram (@eeunseo._.v) and Weibo accounts, where she shares glimpses into her life and career. Her MBTI personality type is ENFJ, offering insight into her extroverted and empathetic nature.

Yeoreum

The youngest Korean member of the group, Lee Jin-sook (이진숙), professionally known as Yeoreum (여름), brings exceptional dancing ability and youthful charm to the wjsn members lineup.

Yeoreum real name and stage name

Born as Lee Jin-sook, Yeoreum later legally changed her name to Lee Yeoreum (이여름). Her stage name translates to "Summer" in English, perfectly capturing her bright personality within the cosmic girls members roster.

Yeoreum position in WJSN

Within the group, Yeoreum serves primarily as a sub-vocalist and sub-rapper. Nonetheless, several sources identify her as the main dancer, highlighting her exceptional performance abilities. She represents the Capricorn zodiac sign in the group's celestial concept.

Yeoreum birthday and age

Born on January 10, 1999, in Seoul, South Korea, Yeoreum is currently 26 years old. Unlike some other wjsn members now, she doesn't have any discrepancies between her official and actual birth dates.

Yeoreum fun facts

Yeoreum possesses multiple talents beyond her idol career. She can play the piano, pipe, and janggu (traditional Korean drum). Additionally, she holds certification as a scuba diver. Her sensitive nose allows her to identify scents with remarkable accuracy—even guessing what ramen someone is cooking or what perfume a fan is wearing.

Yeoreum sub-units

Throughout her career, Yeoreum has participated in multiple sub-units:

Joy Unit
WJSN CHOCOME (alongside Soobin, Luda, and Dayoung)
EL7Z UP (where she serves as leader after finishing 5th on the survival show Queendom Puzzle)

Yeoreum social media presence

Fans can connect with Yeoreum through her Instagram (@yeolum_e) and TikTok (@healthyscalpsforall). Through these platforms, she shares glimpses of her daily life while connecting with her growing fanbase.

Dayoung

Affectionately nicknamed the "mom" of the dorm, Lim Da-young (임다영), professionally known as Dayoung (다영), combines maternal care with impressive vocal talent as one of the key wjsn members.

Dayoung real name and stage name

Born as Lim Da-young (임다영), she adopted the stage name Dayoung (다영) upon joining the cosmic girls members. Fans commonly refer to her as "Dayomi," meaning "Cutie Dayoung".

Dayoung position in WJSN

Within the group structure, Dayoung serves as lead vocalist. Her powerful singing capabilities make her an integral part of the group's sound identity.

Dayoung birthday and age

Born on May 14, 1999, in Jeju, South Korea, Dayoung is currently 26 years old. She represents the Taurus zodiac sign in the group's celestial concept.

Dayoung fun facts

Beyond being an only child, Dayoung stands out as:

One of the best cooks in WJSN alongside Eunseo
A contestant on K-Pop Star Season 1
A health enthusiast who avoids chocolate and soft drinks
A graduate of School of Performing Arts Seoul (SOPA)

Remarkably, if she weren't a singer, Dayoung once revealed she would have pursued becoming a diplomat.

Dayoung sub-units

Throughout her career, Dayoung has participated in multiple sub-units including WJSN CHOCOME, Wonder Unit, and Y-TEEN.

Dayoung social media presence

Currently, fans can connect with Dayoung through her Instagram accounts: her personal account @dayoungism, official account @dayoung_offcl, and fan page @team.dayoung. On September 9, 2025, she made her solo debut with the digital single "Gonna love me, right?".

Yeonjung

Known for her extraordinary "cider vocals" that can reach impressive high notes, Yu Yeon-jung (유연정), professionally known as Yeonjung (연정), joined the wjsn members as their thirteenth addition in July 2016.

Yeonjung real name and stage name

Yu Yeon-jung serves as her birth name, with Yeonjung becoming her stage name upon joining the cosmic girls members. Her name maintains consistency across various platforms, occasionally written as Yoo Yeonjung in international contexts.

Yeonjung position in WJSN

Within the group structure, Yeonjung holds the position of main vocalist and maknae (youngest member). She represents the Ophiuchus zodiac sign (⛎) in the group's celestial concept. Interestingly, she was introduced to the wjsn members lineup after participating in the survival show Produce 101, where she placed 11th and debuted with temporary group I.O.I.

Yeonjung birthday and age

Born on August 3, 1999, in Gwangmyeong, Gyeonggi Province, South Korea, Yeonjung is currently 26 years old. Her actual zodiac sign is Leo, yet she represents Ophiuchus in the group's concept.

Yeonjung fun facts

As a former SM Entertainment trainee, Yeonjung can play guitar. She made her WJSN debut with their mini-album "The Secret". Remarkably, she won the V-1 vocal competition in 2019, cementing her reputation for exceptional singing abilities.

Yeonjung sub-units

Throughout her career, Yeonjung has participated in the Natural unit and Dream Carrier (φορευς) sub-unit.

Yeonjung social media presence

Fans can connect with Yeonjung through her Instagram account @uyj__0803, where she shares glimpses of her daily life and career developments.

Xuan Yi

A talented Chinese performer who made her mark in both Korean and Chinese entertainment industries, Wu Xuan Yi (吳宣儀), professionally known as Xuan Yi (선의) or Betty Wu, represented the international appeal of the cosmic girls members during her tenure with the group.

Xuan Yi real name and stage name

Wu Xuan Yi serves as her Chinese birth name, with the Korean equivalent being Oh Sun Ee (오선의). From 2020 onward, she began using "Betty Wu" as an additional stage name for her solo activities.

Xuan Yi position in WJSN

Within the group structure, Xuan Yi primarily functioned as lead dancer and sub-vocalist. Simultaneously, she served as the leader of WJSN's Joy Unit.

Xuan Yi birthday and age

Born on January 26, 1995, in Haikou, Hainan Province, China, Xuan Yi is currently 30 years old. Throughout her time with WJSN, she represented the Aquarius zodiac sign in the group's celestial concept.

Xuan Yi fun facts

As an accomplished musician, Xuan Yi can play the piano. Furthermore, she participated in "Produce 101 China," impressively ranking 2nd and subsequently debuting with Chinese girl group Rocket Girls 101. Interestingly, fans nicknamed her "Yiyuans" as she became increasingly popular in China, eventually winning the Fresh Asia Music 2018 award for Most Popular Female Singer.

Xuan Yi sub-units

Throughout her career, Xuan Yi participated in the Joy Unit alongside Eunseo and Yeoreum. This sub-unit showcased her dance capabilities and bright personality.

Xuan Yi social media presence

Fans can connect with Xuan Yi through her Instagram (@w.xuanyi0126) and Weibo accounts. On March 3, 2023, Starship Entertainment announced that Xuan Yi, along with fellow Chinese members Cheng Xiao and Mei Qi, officially departed from WJSN following the expiration of their contracts.

Cheng Xiao

Recognized for her exceptional flexibility and dance skills, Cheng Xiao (程瀟) established herself as one of the most visible former wjsn members, currently enjoying a thriving solo career in China after her departure from the group.

Cheng Xiao real name and stage name

Born as Cheng Xiao (程瀟) in Chinese, her Korean name translates to Jung Seong So (정성소). Occasionally, she's referred to as Cheng Xiao Xiao, maintaining consistent branding across her multinational career trajectory.

Cheng Xiao position in WJSN

Throughout her tenure with the cosmic girls members, Cheng Xiao held multiple positions: main dancer, sub-vocalist, visual, and face of the group. Indeed, her center position highlighted her importance to the group's image during their formative years.

Cheng Xiao birthday and age

Born on July 15, 1998, in Shenzhen, China, Cheng Xiao is currently 27 years old. Throughout her time with WJSN, she represented the Cancer zodiac sign in the group's celestial concept.

Cheng Xiao fun facts

Standing at 167cm (5'6"), Cheng Xiao speaks multiple languages: Chinese (fluent), Korean (fluent), and English (conversational). Hence, she served as WJSN's Chinese spokesperson. Her decade of Chinese dance training culminated in remarkable tumbling abilities that set her apart from other idols. Furthermore, she mentored on the show "Idol Producer" alongside Pristin's Kyulkyung.

Cheng Xiao sub-units

Throughout her career, Cheng Xiao participated in multiple units including the Wonder Unit and Sunny Girls—a special project group formed for Inkigayo's Music Crush project with GFriend's Eunha, Oh My Girl's YooA, Gugudan's Nayoung, and Momoland's Nancy.

Cheng Xiao social media presence

Currently, fans can follow her via Instagram and Twitter (@chengxiao_0715) or Weibo (chengxiao0715). On March 3, 2023, Starship Entertainment announced her official departure from WJSN following her contract expiration.

Mei Qi

Achieving first place in China's Produce 101 with an astounding 185,244,357 votes, Meng Mei Qi (孟美岐), known professionally as Mei Qi (미기), established herself as one of the most successful former wjsn members in the Chinese entertainment industry.

Mei Qi real name and stage name

Originally from Luoyang, Henan, China, Meng Mei Qi adopted the Korean name Maeng Mi Ki (맹미기) upon joining the cosmic girls members.

Mei Qi position in WJSN

Throughout her time with the group, Mei Qi served as main dancer and lead vocalist. As the maknae (youngest) of her unit, her exceptional dance abilities made her a standout performer.

Mei Qi birthday and age

Born on October 15, 1998, Mei Qi is currently 26 years old. In WJSN's celestial concept, she represented the Libra zodiac sign.

Mei Qi fun facts

Mei Qi began training at just 15 years old and traveled to Korea six years before debut. Her favorite color is purple, plus she speaks fluent Korean and served as a translator for the Chinese members.

Mei Qi sub-units

She participated in WJSN's Natural Unit alongside Luda.

Mei Qi social media presence

After her contract expiration on March 3, 2023, Mei Qi departed from WJSN. Currently, fans can follow her on Instagram @m.meiqi7.