JooBin
주빈 · Joo Bin (조빈)
Joo Bin — Jasmine Joo
January 16, 2009 Korean 168 cm — Type B ISFJ Capricorn
JooBin is a South Korean idol under MODHAUS and a member of the record-setting 24-member girl group tripleS, known to fans worldwide as WAV's beloved maknae-line visual. Born on January 16, 2009, in Seoul, JooBin was revealed as tripleS's eighteenth member (S18) on December 22, 2023, and made her first stage the very next day as part of the group's fifth sub-unit, NXT, alongside members Lynn, HaYeon, and ShiOn with the digital single Just Do It. She officially debuted with the complete 24-member lineup on May 8, 2024, in the studio album ASSEMBLE24, promoting the lead single Girls Never Die. Fans quickly grew fond of JooBin's warm, cheerful personality, her talent for photography, and her enthusiasm for performing, earning her the affectionate nicknames BossBaby and Binnie. As a MODHAUS idol, JooBin's path within tripleS is shaped directly by fan participation through the group's Gravity voting system, meaning WAV has a real hand in choosing her sub-unit placements and stage lineups. In September 2025, she was placed into the sub-unit Zenith, continuing to grow her range as a performer. With her bright visuals, dependable dancing, and genuine connection with fans, JooBin represents the next generation of tripleS talent, embodying the group's core idea that anyone can hold the special ability called S. This profile covers her biography, height, birthday, group history, discography, trivia, and fandom details for anyone wanting to learn more about this rising tripleS idol.
Story
Biography
Who Is JooBin? Meet tripleS’s Rising Visual and Maknae-Line Dancer
JooBin is a South Korean idol and singer under MODHAUS, best known as the eighteenth revealed member of the record-breaking 24-member girl group tripleS (also called SSS or Social Sonyo Seoul). Born Joo Bin on January 16, 2009, in Seoul, South Korea, JooBin has quickly become a fan favorite for her bright energy, natural visuals, and heartfelt dance lines within the group’s NXT and Zenith sub-units.
JooBin was scouted by MODHAUS talent scouts at a theme park in the summer of 2023 and trained briefly before her official reveal. She was unveiled as S18 on December 22, 2023, and made her very first performance the next day with the digital single “Just Do It” as part of tripleS’s fifth sub-unit, NXT, alongside Lynn, HaYeon, and ShiOn. She officially debuted with the full 24-member lineup on May 8, 2024, through tripleS’s first studio album ASSEMBLE24 and its lead single “Girls Never Die.”
As part of the world’s first fully fan-participatory idol group, JooBin’s activities — from sub-unit placements to setlists — are shaped directly by WAV, tripleS’s global fandom, through the group’s blockchain-based Gravity voting system on the Cosmo app. Fans quickly connected with JooBin’s cheerful, easygoing personality, love of photography, and her nicknames “BossBaby” and “Binnie.”
Whether you’re a longtime WAV or just discovering the K-pop girl group phenomenon that is tripleS, JooBin’s journey from trainee to NXT maknae to full tripleS member is a great example of how modern idol groups are being built together with their fans.
Profile
Basic Information
| Stage Name | JooBin |
| Full Birth Name | Joo Bin (주빈) |
| Date of Birth | January 16, 2009 |
| Birthplace | Seoul, South Korea |
| Hometown | Seoul, South Korea |
| Nationality | Korean |
| Height | 168 cm (5'6") |
| Weight | — |
| Blood Type | B |
| Zodiac Sign | Capricorn |
| MBTI | ISFJ |
| Education | Cornerstone Collegiate Academy of Seoul (current) |
| Agency | MODHAUS |
| Debut | May 8, 2024 (tripleS, "ASSEMBLE24") |
| Languages | Korean, English |
| Nicknames | BossBaby, Binnie, Kong-i |
| Hobbies | Listening to music, taking pictures, handcrafting |
| Favorite Color | Conifer Green |
| Ideal Type | Someone kind, honest and easy to talk to |
Membership
Groups & Positions
tripleS
MODHAUS
Visual Dancer NXT Zenith
December 2023 – Present
The Lineup
Group Members — tripleS
YooYeon
Leader · Visual
Mayu
Dancer
Xinyu
Vocalist
NaKyoung
Dancer · Vocalist
SoHyun
Vocalist · Producer
DaHyun
Vocalist
Nien
Dancer
SeoYeon
Vocalist
JiYeon
Member
Kotone
Member
ChaeYeon
Vocalist
YuBin
Dancer
JiWoo
Vocalist
Kaede
Dancer
ShiOn
Vocalist
Sullin
Leader of moon · Dancer
Lynn
Main Dancer
HyeRin
Vocalist
ChaeWon
Dancer
HaYeon
Dancer · Vocalist
SooMin
Vocalist
YeonJi
Maknae · Dancer
JooBin
Visual · Dancer
This Idol
SeoAh
Maknae
Journey
Career Timeline
2023
Cast by MODHAUS
Scouted by MODHAUS talent scouts at a theme park in the summer of 2023 and began training shortly after.
2023
Revealed as S18
Officially revealed as the eighteenth member of tripleS on December 22, 2023.
2023
Sub-unit debut with NXT
Made her first stage on December 23, 2023, in tripleS's fifth sub-unit NXT with the digital single "Just Do It."
2024
Official debut with tripleS
Debuted with the completed 24-member tripleS lineup on May 8, 2024, via the studio album "ASSEMBLE24" and single "Girls Never Die."
2025
tripleS Come True Tour
Performed across multiple cities as part of the "tripleS Come True" tour from January to March 2025.
2025
Placed in Zenith
Placed into the sub-unit Zenith on September 8, 2025, expanding her promotional activities.
Music
Discography
💜
ASSEMBLE24
Studio Album
2024
🎧
Just Do It (NXT)
Digital Single
2023
🎧
Girls Never Die
Lead Single
2024
Recognition
Awards & Achievements
Global Rising Star (with tripleS)
Hanteo Music Awards 2024
2024
Best New Artist Achievement, THE SHOW win for "Girls Never Die" (with tripleS)
THE SHOW
2024
Did You Know?
Trivia & Fun Facts ✨
★
Was scouted by MODHAUS talent scouts at a theme park in the summer of 2023.
★
Officially revealed as tripleS's eighteenth member (S18) on December 22, 2023.
★
Made her sub-unit debut just one day later with NXT's digital single "Just Do It."
★
Is a member of tripleS's sub-units NXT and, later, Zenith.
★
Was the second member of NXT to be individually revealed.
★
Attends Cornerstone Collegiate Academy of Seoul, an international school taught mainly in English.
★
Previously attended Flat9 Dance & Vocal Academy alongside future members DaHyun and HaYeon.
★
Has a younger brother (born 2012) and a younger sister (born 2016).
★
Is nicknamed "BossBaby," "Binnie," and "Kong-i" by fellow members and fans.
★
Loves eating brunch, with favorite foods including bread, pasta, pizza, and tteokbokki.
★
Can't watch scary videos or movies.
★
Enjoys taking photos of other people as a personal specialty.
★
Is a fan of Kakao Friends' Ryan and Choonsik, Care Bears, and Disney characters.
★
Moved into the tripleS dorm and became roommates with SooMin, DaHyun, and later ShiOn.
★
Performed at the "tripleS Authentic" tour in Seoul with the NXT sub-unit in February 2024.
★
Debuted officially with tripleS on May 8, 2024, via the album "ASSEMBLE24."
★
Took part in the "tripleS Come True" tour across multiple cities from January to March 2025.
★
Is fluent in both Korean and English.
★
Her favorite tripleS songs include "Girls' Capitalism" and "Rising."
★
Enjoys handcrafting and listening to music in her free time.
★
Is in the same school grade as fellow member YeonJi, despite being younger, because she started school early.
★
Her favorite perfume scent is described as sweet.
★
Was placed into the sub-unit Zenith on September 8, 2025.
★
Graduated from Woochon Elementary School before moving to her current school.
★
Is known among WAV for her natural, camera-friendly visuals.
★
Values connecting personally with fans during tour meet-and-greets.
★
Continues to grow her range as both a dancer and vocalist within tripleS's rotating sub-unit system.
The Fandom
Fan Club & Fan Name 💜
Official Fan Name
WAV
WAV (웨이브) is tripleS's official global fandom name, established on April 10, 2023 through a fan-voted Gravity event. The name plays on both ocean waves and radio waves, symbolizing the two-way connection between tripleS and their fans.
Official Fan Color
Conifer Green (member color)
Conifer Green is JooBin's individual representative member color, used on lightsticks, banners, and fan projects to cheer for her specifically within tripleS.
Official Light Stick
heartS (Official Light Stick)
heartS is tripleS's official light stick, chosen by WAV through a Gravity vote and first announced in May 2024, featuring a design that reflects the group's dimension and signal concept.
Fan Community Platform
Cosmo / Weverse
Cosmo is tripleS's dedicated app where WAV can vote in Gravity events, collect Objekt photocards, and directly influence sub-unit lineups; the group also communicates with fans via Weverse.
Stay Connected
Social Media
Photos
Gallery 📷
