Jeong HaYeon
Leader of Zenith, Dancer, Vocalist. One of 24 women proving that a member list can double as cardio.
| Stage name | Jeong HaYeon |
|---|---|
| Birth name | Jeong Hayeon (정하연 / チョン・ハヨン / 丁海燕) |
| Birthday | August 1, 2007 |
| Nationality | Korean |
| S number | S19 (CREAM 01) |
| Role | Leader of Zenith, Dancer, Vocalist |
| Height | 166 cm (5’5″) |
| MBTI | ENTP |
Before tripleS
She was born in Anyang, Gyeonggi, South Korea. Her nicknames are Cat, Hedgehog, Chocoball, and Hamster. She has an older brother born in 2004. A couple of her favorite foods are macaroons, ramen, sushi, cake, meat, and seafood.
tripleS career
Jeong HaYeon is S19 (CREAM 01) in tripleS, MODHAUS’s rotating 24-member group. The number is reveal order, not a ranking. Members move through full-group releases and smaller Dimensions selected through the Cosmo voting system.
Her activities run through tripleS full-group and unit promotions, including the 24-member ASSEMBLE era.
Fandom file
Fandom: WAV. Digital photocards: Objekts. Voting currency: COMO. Fan votes: Gravity. Yes, the vocabulary sounds like a science-fiction game because this group refuses to be normal.
S19: what the number means
Jeong HaYeon was revealed on December 23, 2023 as S19, the nineteenth member introduced in tripleS’ numbered system. The S designation is a reveal order and identity marker, not a popularity rank, age ranking, or permanent line-distribution position. She arrived after the first several Acid Angel from Asia, +(KR)ystal Eyes, LOVElution, and EVOLution releases had already taught fans how the group’s rotating structure worked.
Her reveal belonged to the final expansion toward tripleS’ planned twenty-four-member lineup. That context matters because she did not debut into a normal fixed-member group with one settled formation. She entered a system where full-group albums, fan-voted Dimensions, short-lived combinations, and recurring performance units all coexist.
The “CREAM 01” identifier used in early material is part of the group’s internal reveal language. It should not be treated as a separate group membership or copied into a position field without explanation.
Early life and pre-debut record
HaYeon was born on August 1, 2007 in Anyang, Gyeonggi Province, South Korea. Public profiles place her in the generation of members who entered the industry while completing secondary education. Responsible coverage keeps school and family details limited to information she or MODHAUS has made public.
Before her official group work, her public file was far thinner than those of members who had already competed on television or promoted elsewhere. That is exactly why a strong profile should distinguish verified history from fan repetition. Birth date, reveal number, group assignments, credited releases, official videos, and dated live appearances are documentable. Personality labels built from a handful of clips are observations, not permanent facts.
ASSEMBLE24: first full-group debut
All twenty-four members gathered for the studio album ASSEMBLE24, released on May 8, 2024 with “Girls Never Die” as its title track. This was HaYeon’s first full-group album and the point at which the complete tripleS concept became a functioning stage lineup rather than an announced plan.
Performing in a twenty-four-member formation demands a different skill set from a conventional four-to-seven-member team. A performer may receive a short individual camera window, then spend much of the song creating synchronized geometry around other centers. HaYeon’s value is visible in clean transitions, spacing, and the ability to stay expressive when the broadcast camera is not guaranteed to remain on her.
“Girls Never Die” also gave the full group its first major music-show breakthrough. HaYeon therefore entered tripleS history during the era when the complete lineup proved that the project could translate its unusual architecture into mainstream recognition.
Visionary Vision and a dance-focused Dimension
Later in 2024, HaYeon participated in Visionary Vision, the twelve-member dance-focused Dimension associated with the album Performante and title track “Hit the Floor.” The unit let her work inside a smaller formation while still carrying tripleS’ performance scale.
A dance unit does not mean every member performs the same function. Some create texture, some anchor transitions, and some make specific accents readable for the camera. HaYeon’s precision and bright performance tone helped balance the harder rhythmic framing of Visionary Vision with the individuality expected from tripleS members.
The Dimension belongs inside her career chronology, but it does not replace her main membership. tripleS units are components of the larger system, so the directory continues to label her as a tripleS member rather than generating separate person records for every unit assignment.
ASSEMBLE25 and the full-group cycle
tripleS returned as a full group in 2025 with ASSEMBLE25 and “Are You Alive.” For HaYeon, the era demonstrated the difference between a first complete-lineup spectacle and a group learning to use twenty-four members as a repeatable creative format.
The album and its promotions expanded the catalog available for concerts while preserving the project’s core promise: every member belongs to tripleS even when only selected combinations promote at a particular moment. Absence from one Dimension is therefore not evidence that a member has left.
HaYeon’s profile tracks both complete-group releases and the units in which she actually participates. It does not attach every tripleS subunit song to every member, because that would make the discography inaccurate rather than comprehensive.
Zenith and the msnz structure
HaYeon was identified as the leader of Zenith, one of the combinations in tripleS’ msnz project. The lowercase project name organizes the moon, sun, neptune, and zenith units while still connecting them to the wider group.
Leadership in a temporary or project-based unit is not the same as being tripleS’ single permanent leader. In HaYeon’s case, it records responsibility within Zenith: helping hold practice communication, stage coordination, and member chemistry together for that specific configuration.
This distinction prevents two common database errors. Zenith should not be mistaken for a wholly unrelated permanent group, and HaYeon’s unit leadership should not be inflated into authority over all twenty-four members.
Voice, dance, and camera profile
HaYeon’s vocal color is bright and slightly dreamy, useful in the melodic layers that allow a dense tripleS arrangement to feel light rather than crowded. Line quantity changes across Dimensions and albums, so the better listening question is not whether she receives the longest section. It is what color her part adds before the arrangement hands focus elsewhere.
As a dancer, she performs with clear angles and controlled energy. In large formations, rushing an accent can distort the entire picture; underplaying it can make a member disappear. HaYeon works between those risks, maintaining synchronization while using facial expression to preserve an individual identity.
Her growth is easiest to follow chronologically: compare early Signals and reveal material with “Girls Never Die,” Visionary Vision stages, later full-group promotions, and Zenith work. That sequence shows adaptation more reliably than a static fan ranking.
Cosmo, Objekt, and fan participation
tripleS is built around fan participation through the Cosmo platform, where digital Objekt collectibles and Gravity votes can influence Dimensions or project decisions. HaYeon’s career therefore unfolds inside a system where audience choices have a more visible structural role than in most idol groups.
That system should be described without pretending fans manage the performers. MODHAUS remains the company responsible for contracts, schedules, training, releases, safety, and professional decisions. Gravity results shape defined choices presented through the platform; they do not erase the agency’s duty of care.
For archive purposes, official Gravity notices and results are dated sources. Screenshots circulating without context are weaker evidence because choices, eligibility, and final unit names may change between preliminary discussion and an announced result.
My Secret New Zone in 2026
In 2026, tripleS carried the complete lineup and msnz material into the My Secret New Zone concert cycle. The Asia tour began in Taipei on February 28 and included full-group and unit stages, giving HaYeon a live setting where her S19 identity, Visionary Vision experience, and Zenith leadership could exist on the same program.
Concerts are especially important for tripleS because they demonstrate how the group’s rotating discography can be assembled into one coherent show. A member may move between twenty-four-person songs and smaller-unit material in a single night. HaYeon’s file therefore records concerts alongside albums rather than treating live work as a footnote.
Name, search, and duplicate prevention
Her name appears as Jeong HaYeon, Jeong Hayeon, and Jeong Ha-yeon. Official styling may capitalize the internal syllable, while English-language databases vary in spacing and hyphenation. Her Korean name is 정하연.
All of those searches should resolve to this page. S19 and tripleS HaYeon are alternate identifiers, not separate performers. The directory title uses Jeong HaYeon (tripleS) to keep her distinct from unrelated people with the same given name.
August 2026 status checkpoint
As of August 12, 2026, Jeong HaYeon remains a current member of tripleS under MODHAUS. Her group tenure begins with her December 2023 reveal and is displayed as 2023–present. She is S19, a participant in full-group releases, a Visionary Vision member, and Zenith’s leader within the msnz project.
Current claims should be checked against MODHAUS, tripleS official channels, Cosmo announcements, album credits, and dated concert notices. Fan profiles are valuable indexes for discovery, but official material controls unit rosters, release participation, and status.
Official links
Members are linked through the official group accounts unless MODHAUS provides a separate public account.
YouTube tracking history
CVM Sekai tracks tripleS and MODHAUS official channels for full-group releases, Dimension music videos, SIGNAL episodes, performance films, dance practices, and clearly credited HaYeon content. Group and unit releases remain connected to the relevant group pages and this canonical member profile. They do not create an Artist classification without a formal solo music release.