HaYeon
정하연 (Jeong Ha-yeon) · Luna Jeong
Jeong Ha-yeon (정하연) · English name: Luna Jeong
January 8, 2007 Korean 166 cm N/A Type A ENTP Leo
Jeong Ha-yeon, promoted as HaYeon, is a South Korean member of the K-pop girl group tripleS under MODHAUS, known within the fandom as S19. Born August 1, 2007, in Anyang, Gyeonggi-do, she trained at the FLAT9 Dance & Vocal Academy alongside future tripleS members DaHyun, JooBin, and JiYeon before auditioning for MODHAUS in 2023. She was revealed as tripleS's nineteenth member on December 23, 2023, debuting the same day with the sub-unit NXT on the digital single "Just Do It." HaYeon joined the full 24-member tripleS lineup for the studio album ASSEMBLE24 in May 2024 and later became part of the sub-unit Alphie. In September 2025, she was voted leader of the sub-unit zenith, debuting in that role with the single "Q&A" from the mini album Beyond Beauty. Introduced as an "all-rounder" for her vocal, rap, and dance abilities, HaYeon is known for hitting impressively high notes, her playful and bold personality, and her artistic talent for drawing portraits. As the niece of actor Im Hyung-joon and part of tripleS's youngest generation of members, HaYeon has quickly become a fan favorite among WAV, celebrated for her charisma, versatility, and steady growth into a confident sub-unit leader.
Story
Biography
Who Is Jeong Ha-yeon?
Jeong Ha-yeon (정하연), promoted as HaYeon, is a South Korean idol and one of the youngest tripleS members under MODHAUS. Known to fans as S19, she was introduced as an “all-rounder” for her versatile vocal, rap, and dance skills, and now serves as the leader of the tripleS sub-unit zenith.
Early Life and Training
Born on August 1, 2007, in Anyang, Gyeonggi-do, Ha-yeon trained at the FLAT9 Dance & Vocal Academy in Seoul, the same academy that produced fellow tripleS members DaHyun, JooBin, and JiYeon. She reportedly auditioned for MODHAUS through the academy in mid-2023 and is the niece of well-known South Korean actor Im Hyung-joon.
Debut and Rise Within tripleS
Ha-yeon was revealed as the nineteenth member of tripleS on December 23, 2023, debuting the same day with the sub-unit NXT and its digital single “Just Do It.” She then joined the full 24-member tripleS for ASSEMBLE24 in May 2024, going on to become part of the sub-unit Alphie as well.
Leadership and Growth
In September 2025, Ha-yeon was voted leader of zenith, one of tripleS’s newer sub-units, debuting in that role with the single “Q&A” from the mini album Beyond Beauty in November 2025. Known for her ability to hit remarkably high notes, strong stage presence, and playful, bold personality, she has quickly grown into a dynamic and charismatic performer.
Personality and Fan Appeal
With an ENTP personality, a passion for drawing portraits, and an easy rapport with fellow maknae-line members, Ha-yeon has become a fan favorite among WAV, tripleS’s fandom, admired for her fearless attitude, artistic talent, and steady rise from rookie all-rounder to confident sub-unit leader.
Profile
Basic Information
| Stage Name | HaYeon |
| Full Birth Name | Jeong Ha-yeon (정하연) |
| Date of Birth | August 1, 2007 |
| Birthplace | Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do, South Korea |
| Hometown | Anyang, South Korea |
| Nationality | South Korean |
| Height | 166 cm (5'5") |
| Weight | N/A |
| Blood Type | A |
| Zodiac Sign | Leo |
| MBTI | ENTP |
| Education | Lila Art High School (Dept. of Acting and Video Contents) |
| Agency | MODHAUS |
| Debut | December 23, 2023 (tripleS sub-unit NXT) |
| Languages | Korean, learning Japanese |
| Nicknames | Hamster, Cat, Hedgehog, Chocoball |
| Hobbies | Eating, writing, finding fancy cafes |
| Favorite Color | Light purple, light yellow |
| Ideal Type | Not officially confirmed |
Membership
Groups & Positions
tripleS
MODHAUS
Leader of zenith Vocalist Dancer NXT Member Alphie Member
December 2023 – Present
The Lineup
Group Members — tripleS
SeoYeon
Leader (S1) · Vocalist
HyeRin
Leader of Visionary Vision · Dancer
JiWoo
Co-Leader of EVOLution · Main Vocalist
ChaeYeon
Vocalist · Visual
YooYeon
Leader of tripleS · Visual
SooMin
Vocalist
NaKyoung
Vocalist · Dancer
YuBin
Dancer
Kaede
Vocalist
DaHyun
Dancer · Rapper
Kotone
Vocalist
YeonJi
Vocalist
Nien
Vocalist · Dancer
SoHyun
Vocalist · Producer · Songwriter
Xinyu
Leader of Sun · Visual · Vocalist
Mayu
Vocalist
Lynn
Vocalist
JooBin
Dancer
HaYeon
Leader of zenith · Vocalist · Dancer
This Idol
ShiOn
Main Vocalist
ChaeWon
Vocalist
Sullin
Vocalist
SeoAh
Vocalist
JiYeon
Maknae · Vocalist
Journey
Career Timeline
2023
Trained at FLAT9 Dance & Vocal Academy
Trained in vocal and dance at FLAT9 Dance & Vocal Academy in Seoul, the same academy as fellow members DaHyun, JooBin, and JiYeon.
2023
Announced as part of "tripleS NEXT"
Featured in the "tripleS NEXT" teaser announcing four upcoming members, S17 through S20, on October 31, 2023.
2023
Revealed as S19 of tripleS
Officially revealed as the nineteenth member of tripleS on December 23, 2023, introduced in press coverage as an "all-rounder."
2023
Debuted with NXT
Made her sub-unit debut with NXT's non-promoted digital single "Just Do It" on December 23, 2023, alongside ShiOn, Lynn, and JooBin.
2024
tripleS OT24 debut with ASSEMBLE24
Debuted as part of the full 24-member tripleS lineup with the studio album "ASSEMBLE24" and title track "Girls Never Die" on May 8, 2024.
2024
Joined sub-unit Alphie
Became a member of the promotional sub-unit Alphie alongside several senior tripleS members.
2025
ASSEMBLE25 comeback
Promoted tripleS's second studio album "ASSEMBLE25" and its title track "깨어 (Are You Alive)" from May 12, 2025.
2025
Became leader of zenith
Revealed as leader of the new sub-unit zenith on September 3, 2025, and debuted in that role with the single "Q&A" from the mini album "Beyond Beauty" on November 24, 2025.
2026
Graduated high school
Graduated from Lila Art High School on February 11, 2026.
Music
Discography
🎵
Just Do It (NXT)
Digital Single
2023
🎵
Beyond Beauty (zenith)
Mini Album
2025
💜
ASSEMBLE24
Studio Album
2024
💜
ASSEMBLE25
Studio Album
2025
🎧
Q&A (zenith)
Digital Single
2025
Recognition
Awards & Achievements
Rookie Female Idol
Brand of the Year Awards
2023
Best New Female Artist
MAMA Awards
2023
Rookie of the Year (Female)
Hanteo Music Awards
2023
Global Rising Star
Hanteo Music Awards
2024
1theK Global Icon
Melon Music Awards
2024
Best Girl Group Popularity Award
D-AWARDS
2025
Did You Know?
Trivia & Fun Facts ✨
★
HaYeon was born on August 1, 2007, in Pyeongchon-dong, Dongan-gu, Anyang, Gyeonggi-do, South Korea.
★
Her English name is Luna Jeong.
★
Her nicknames include Hamster, Cat, Hedgehog, and Chocoball.
★
She trained at FLAT9 Dance & Vocal Academy, the same academy attended by fellow tripleS members DaHyun, JooBin, and JiYeon.
★
She trained alongside Nizz of the group X:IN during her time at FLAT9.
★
She is the niece of South Korean actor Im Hyung-joon.
★
She has an older brother, born in 2004.
★
She was introduced in her reveal article as an "all-rounder" idol.
★
She was accidentally revealed early when her profile picture briefly appeared on the COSMO app's "Grid" tab.
★
Her favorite tripleS songs are "Complexity" by LOVElution and "Cherry Talk" by +(KR)ystal Eyes.
★
She used to look up to fellow member ChaeYeon, having watched her childhood variety show "Tok!Tok! Boni, Hani."
★
Her specialties include hitting very high notes and drawing portraits.
★
Her favorite characters include Totoro from "My Neighbor Totoro," the Minions, and Petty from "Pororo."
★
Her favorite foods include meat, seafood, ramen, sushi, cake, and macaroons.
★
She prefers snowy weather over rain.
★
She can cook simple dishes like fried eggs and ramen.
★
She has braces on the back of her teeth.
★
She is currently learning Japanese.
★
She was a big fan of WJSN before debuting as an idol herself.
★
Her hobbies include eating, writing, and finding fancy cafes to visit.
★
She attends Lila Art High School, majoring in Acting and Video Contents.
★
She graduated from Lila Art High School on February 11, 2026, opting not to take Korea's college entrance exam.
★
She practiced Taekwondo when she was younger.
★
Her representative color within tripleS is Medium Turquoise (#52D9BB), and her representative emoji is a hedgehog.
The Fandom
Fan Club & Fan Name 💜
Official Fan Name
WAV
WAV (웨이브), meaning "wave," is the official fandom name of tripleS, chosen by fans themselves through the group's democratic Gravity voting system on the COSMO app rather than being handed down by the agency. The name reflects tripleS's identity as a decentralized girl group whose direction, sub-units, and even fandom name are shaped by fan participation.
Official Fan Color
Not officially confirmed
tripleS has not designated a single official fandom color; each member instead carries her own individual representative color revealed through Gravity voting.
Official Light Stick
heartS
heartS is tripleS's official light stick, chosen by WAV in the Official Light Stick Event Gravity of February 2024 after fans submitted over 500 fan-made designs. Its heart-shaped silhouette symbolizes the bond between tripleS and WAV, and the design was formally unveiled on May 21, 2024.
Fan Community Platform
COSMO
COSMO ("the gate") is MODHAUS's dedicated app that connects tripleS with WAV, letting fans collect digital Objekt photocards, earn Como (voting currency), and take part in Gravity votes that shape the group's sub-units, releases, and activities.
Stay Connected
Social Media
Photos
Gallery 📷
