| Origin | Seoul, South Korea |
| Debut | April 8, 2026 |
| Number of Members | 5 |
| Members | Youn Youngjun Riaan Dane Keiten hagiwa |
| Oldest Member | Youn Youngjun |
| Youngest Member (Maknae) | hagiwa |
hrtz.wav Members Profile
Youn Youngjun
| Full Name | Youn Young-jun |
| Birthday | March 21, 2000 |
| Birthplace | Suwon, Gyeonggi-do, South Korea |
| Age | 26 years and 3 months old |
| Height | N/A |
| Weight | N/A |
| Zodiac Sign | Aries |
| Chinese Zodiac Sign | Dragon |
| Blood Type | A |
| MBTI | INFP |
| Position | Keyboardist |
| @youn9wns |
Riaan
| Full Name | Yoon Eui-jin |
| Birthday | January 16, 2003 |
| Birthplace | N/A |
| Age | 23 years and 5 months old |
| Height | N/A |
| Weight | N/A |
| Zodiac Sign | Capricorn |
| Chinese Zodiac Sign | Horse |
| Blood Type | N/A |
| MBTI | INFJ |
| Education | School of Performing Arts Seoul, Seoul Institute of the Arts |
| Position | Vocalist |
| @riaanyoon |
Dane
| Full Name | Lee Yong-jun |
| Birthday | July 20, 2004 |
| Birthplace | Seoul, South Korea |
| Age | 21 years and 11 months old |
| Height | 6 feet 2 inches (190 cm) |
| Weight | 165 lbs (75 kg) |
| Zodiac Sign | Cancer |
| Chinese Zodiac Sign | Monkey |
| Blood Type | N/A |
| MBTI | ENTP |
| Education | School of Performing Arts Seoul, Seokyeong University |
| Position | Bassist |
| @dane.youneed |
Keiten
| Full Name | Keiten Ishibashi |
| Birthday | December 4, 2006 |
| Birthplace | Tokyo, Japan |
| Age | 19 years and 6 months old |
| Height | 5 feet 9 inches (176 cm) |
| Weight | N/A |
| Zodiac Sign | Sagittarius |
| Chinese Zodiac Sign | Dog |
| Blood Type | N/A |
| MBTI | INTJ |
| Education | Berklee College of Music |
| Position | Guitarist |
| @keiten.i |
hagiwa
| Full Name | N/A |
| Birthday | November 23, 2022 |
| Birthplace | Japan |
| Age | 3 years and 7 months old |
| Height | 5 feet 3 inches (163 cm) |
| Weight | 114 lbs (52 kg) |
| Zodiac Sign | Sagittarius |
| Chinese Zodiac Sign | Tiger |
| Blood Type | N/A |
| MBTI | ENFJ |
| Position | Drummer, Maknae |
| @hagiwa_dr |
Member Ages: Oldest to Youngest
| Member | Birthday | Age |
|---|---|---|
| Youn Youngjun | March 21, 2000 | 26 years, 3 months, 2 days old |
| Riaan | January 16, 2003 | 23 years, 5 months, 7 days old |
| Dane | July 20, 2004 | 21 years, 11 months, 3 days old |
| Keiten | December 4, 2006 | 19 years, 6 months, 19 days old |
| hagiwa | November 23, 2022 | 3 years, 7 months old |
FAQs
How many members are in hrtz.wav?
hrtz.wav is a 5-member K-pop boy group. The group consists of Youn Youngjun, Riaan, Dane, Keiten, and hagiwa.
When did hrtz.wav debut?
hrtz.wav debuted on April 8, 2026, with their extended play The First Wave.
