Haewon
해원 · 오해원 (Oh Hae-won)
Oh Hae-won — Leader · Main Vocalist
February 25, 2003 Korean 162.8 cm (5'4") Not officially confirmed Type O
Haewon is the leader and one of the main vocalists of NMIXX, JYP Entertainment's genre-blending MIXXpop girl group. Born Oh Hae-won on February 25, 2003, in Incheon, South Korea, she decided to become a singer at just five years old, inspired by her older sister's love of K-pop and later by hearing Imagine Dragons' "Demons" in elementary school. After passing a highly competitive JYP Entertainment audition in 2017, Haewon trained for roughly four to five years, commuting long hours between home and the agency, before being revealed as NMIXX's sixth member in November 2021 through a cover of Stephanie Poetri's "I Love You 3000." She officially debuted on February 22, 2022, taking on the leader role for a group that has since built a reputation for ambitious, boundary-pushing pop across releases like Ad Mare, the Fe3O4 trilogy, and the acclaimed debut studio album Blue Valentine. Beyond music, Haewon has become one of NMIXX's most visible personalities, hosting variety programs including Dilemma Game and Workdol, and even contributing songwriting credits to NMIXX tracks such as "Podium" and "Crush On You." Multilingual in Korean, English, and Spanish, she's known among fans for her sharp wit, warm leadership, and surprisingly funny offstage persona. Whether guiding her members through a comeback or making audiences laugh on a variety set, Haewon embodies the balance of responsibility and charisma that NSWER, NMIXX's fandom, has come to expect from their leader.
Story
Biography
Haewon is the leader and one of the main vocalists of NMIXX, the JYP Entertainment girl group that’s carved out its own lane with a genre-mixing sound fans call MIXXpop. Ask any longtime NSWER, and they’ll tell you: this leader brings both heart and humor to the group.
Early Life and Training
Born Oh Hae-won on February 25, 2003, in Incheon, South Korea, Haewon knew from around age five that she wanted to sing, largely thanks to her older sister’s love of K-pop. A defining moment came in elementary school, when Imagine Dragons’ “Demons” moved her deeply even before she understood the English lyrics. She passed a competitive JYP Entertainment audition in 2017 and trained for roughly four to five years, commuting long hours between home and the company along the way.
Debut and Leadership
Haewon was revealed as NMIXX’s sixth member in November 2021 through a cover of Stephanie Poetri’s “I Love You 3000,” and the group officially debuted on February 22, 2022, with Ad Mare. As leader, she’s steered the group through releases including Expérgo, the Fe3O4 EP trilogy, and NMIXX’s chart-topping debut studio album, Blue Valentine.
Life Beyond NMIXX
Haewon has become one of the group’s most visible on-screen personalities, hosting variety programs like Dilemma Game and Workdol, and even contributing songwriting credits to NMIXX tracks such as “Podium” and “Crush On You.” Multilingual and quick-witted, she’s earned a reputation among fans as both a capable leader and a genuinely funny co-star on variety television.
From guiding her members through a comeback to cracking up a studio audience, Haewon shows exactly why NSWER trusts her at the front of NMIXX.
Profile
Basic Information
| Stage Name | Haewon |
| Full Birth Name | Oh Hae-won (오해원) |
| Date of Birth | February 25, 2003 |
| Birthplace | Namdong District, Incheon, South Korea |
| Hometown | Incheon, South Korea |
| Nationality | Korean |
| Height | 162.8 cm (5'4") |
| Weight | Not officially confirmed |
| Blood Type | O |
| Zodiac Sign | Pisces |
| MBTI | ISTP-T (previously ESTP) |
| Education | Incheon Nonhyeon High School; Doonchon High School (graduated) |
| Agency | JYP Entertainment |
| Debut | February 22, 2022 (NMIXX, "Ad Mare") |
| Languages | Korean, English, some Spanish |
| Nicknames | Oh Baek-won, Oh My HAEWON |
| Hobbies | Singing, hosting, yoga-like sleeping poses (fan joke) |
| Favorite Color | White (representative color) |
| Ideal Type | Not officially confirmed |
Membership
Groups & Positions
NMIXX
JYP Entertainment
Leader Main Vocalist
February 2022 – Present
The Lineup
Group Members — NMIXX
Haewon
Leader · Main Vocalist
This Idol
Lily
Main Vocalist
Sullyoon
Lead Vocalist · Visual
Bae
Lead Vocalist
Jiwoo
Main Rapper
Kyujin
Main Dancer
Journey
Career Timeline
2017
Passed JYP Entertainment audition
Haewon passed a three-day JYP Entertainment audition in 2017, reportedly among roughly 10,000 applicants, and became a company trainee.
2021
Revealed as sixth NMIXX member
On November 4, 2021, Haewon was introduced as NMIXX's sixth member through a cover of Stephanie Poetri's "I Love You 3000."
2022
Debuted as NMIXX leader
Haewon debuted as the leader and main vocalist of NMIXX on February 22, 2022, with the single album "Ad Mare."
2022
Began hosting on Music Universe K-909
Haewon was announced as a recurring K-pop segment host on JTBC's "Music Universe K-909" in September 2022.
2023
Co-hosted Dilemma Game
Haewon began co-hosting the variety show "Dilemma Game" in December 2023.
2024
Became MC for Workdol Season 2
Haewon was confirmed as a host for "Workdol" Season 2 in March 2024, later donating with the production team to a children's leukemia charity.
2025
Led NMIXX through Blue Valentine era
As leader, Haewon guided NMIXX through the promotion of their debut studio album "Blue Valentine," which topped Korea's Circle Digital Chart.
2026
Promoted Heavy Serenade
Haewon continued leading NMIXX into their fifth EP era with "Heavy Serenade," released in May 2026.
Music
Discography
💜
AD MARE
Single Album
2022
💜
Entwurf
Single Album
2022
💜
Expérgo
EP
2023
💜
A Midsummer Nmixx's Dream
Single Album
2023
💜
Fe3O4: Break
EP
2024
💜
Fe3O4: Stick Out
EP
2024
💜
Fe3O4: Forward
EP
2025
💜
Blue Valentine
Studio Album
2025
💜
Heavy Serenade
EP
2026
🎧
O.O
Digital Single
2022
🎧
Dice
Digital Single
2022
🎧
Funky Glitter Christmas
Digital Single
2022
🎧
Young, Dumb, Stupid
Digital Single
2023
🎧
Love Me Like This
Digital Single
2023
🎧
Roller Coaster
Digital Single
2023
🎧
Party O'Clock
Digital Single
2023
🎧
Soñar (Breaker)
Digital Single
2024
🎧
Dash
Digital Single
2024
🎧
See That?
Digital Single
2024
🎧
High Horse
Digital Single
2025
🎧
Know About Me
Digital Single
2025
🎧
Blue Valentine
Digital Single
2025
🎧
Tic Tic (feat. Pabllo Vittar)
Digital Single
2026
🎧
Heavy Serenade
Digital Single
2026
Recognition
Awards & Achievements
Favorite New Artist (shared with IVE, Kep1er, LE SSERAFIM)
Mnet Asian Music Awards (MAMA)
2022
New Wave Award
Asia Artist Awards
2022
Best Emotive (Music)
Asia Artist Awards
2022
Rookie Award
32nd Seoul Music Awards
2023
Bonsang (Main Award)
The Fact Music Awards
2023
1st Music Show Win – "Love Me Like This"
Show Champion
2023
10 Music Show Wins – "Blue Valentine" (Music Bank, Show Champion, Music Core, etc.)
Various Music Shows
2025–2026
Nominee – Best Pop Album, "Blue Valentine"
Korean Music Awards
2026
Did You Know?
Trivia & Fun Facts ✨
★
Haewon was born in Namdong District, Incheon, South Korea.
★
She has an older sister, born in 1998, who introduced her to K-pop.
★
Haewon decided she wanted to become a singer at around age five.
★
Hearing Imagine Dragons' "Demons" in elementary school deepened her resolve to become a singer, even without understanding the English lyrics at the time.
★
She passed a three-day JYP Entertainment audition in 2017, reportedly among roughly 10,000 applicants.
★
Haewon trained for about four to five years before debuting.
★
She has said she commuted nearly 90 minutes each way between home and the company during her trainee years.
★
She attended Incheon Nonhyeon High School before transferring to and graduating from Doonchon High School.
★
Haewon was revealed as NMIXX's sixth member on November 4, 2021, through a cover of Stephanie Poetri's "I Love You 3000."
★
Her vocal tone has been compared by fans to TWICE's Mina.
★
She can speak Korean, English, and some Spanish.
★
As a child, classmates teased her by calling her "Oh Baek-won" (Oh Five-Hundred-Won), a pun on her name.
★
Her messenger nickname is reportedly "Oh My HAEWON."
★
Fellow members have said Haewon shifts sleeping positions dramatically through the night, often waking up with her blanket and pillow on the floor.
★
She has a habit of touching her hair frequently.
★
Haewon is often described by fans as one of the wittiest and funniest idols in K-pop.
★
She has shared that she has severe myopia, though she rarely wears glasses during official schedules.
★
She is known among members for drinking large amounts of coffee, sometimes using several packets of instant coffee in one cup.
★
She hosted a recurring K-pop segment on JTBC's "Music Universe K-909" starting in 2022.
★
Haewon has served as MC for variety shows including "Dilemma Game" and "Workdol."
★
In 2024, she and the "Workdol" production team donated ₩10 million to the Korea Childhood Leukemia Foundation.
★
She had a pet poodle named Coco, who passed away in 2024.
★
Haewon has contributed songwriting credits to NMIXX tracks such as "Podium" and "Crush On You."
★
In January 2025, she formed a temporary collaboration unit on the variety show "Hangout with Yoo."
★
She is regarded by JYP labelmates as one of the agency's standout all-round vocalists.
The Fandom
Fan Club & Fan Name 💜
Official Fan Name
NSWER (엔써)
NSWER is NMIXX's official fandom name, revealed by the members during their debut showcase on March 1, 2022. It's an acronym for North, South, West, East, and Route, symbolizing that NMIXX and their fans will find their "Route" and "answer" together.
Official Fan Color
White (individual representative color)
NMIXX has not confirmed an official group fandom color. Fan profile sites list "White" as Haewon's individual representative color, distinct from any official NSWER color.
Official Light Stick
MIXXTICK
MIXXTICK is NMIXX's official light stick, released for sale on February 20, 2023. Because the group's debut album AD MARE translates to "to the sea," the stick carries an ocean theme, featuring a whale inside a clear globe that appears to blow water from its blowhole. Bluetooth connectivity allows synced fan-chant light shows at concerts.
Fan Community Platform
Weverse
Weverse is NMIXX's official platform for connecting with NSWER through member posts, live broadcasts, and exclusive membership content, following the standard used across JYP Entertainment's artist roster.
Stay Connected
Social Media
Photos
Gallery 📷
