| Origin | Seoul, South Korea |
| Debut | December 18, 2025 |
| Number of Members | 3 |
| Members | Kim Hyunjoong Heo Youngsaeng Kim Kyujong |
| Oldest Member | Kim Hyunjoong |
| Youngest Member (Maknae) | Kim Kyujong |
| Tallest Member | Kim Hyunjoong |
| Shortest Member | Heo Youngsaeng |
FIVE O ONE Members Profile
Kim Hyunjoong
| Full Name | Kim Hyun-joong |
| Birthday | June 06, 1986 |
| Birthplace | Jamsil-dong, Gangdong-gu, Seoul, South Korea |
| Age | 40 years old |
| Height | 6 feet 0 inches (183 cm) |
| Weight | 149.91 lbs (68 kg) |
| Zodiac Sign | Gemini |
| Chinese Zodiac Sign | Tiger |
| Blood Type | B |
| MBTI | INFJ |
| Position | Leader, Main Dancer, Vocalist, Rapper, Face of the Group |
| @hyunjoong860606 |
Heo Youngsaeng
| Full Name | Heo Young-saeng |
| Birthday | November 03, 1986 |
| Birthplace | Gwangju, Gyeonggi-do, South Korea |
| Age | 39 years and 7 months old |
| Height | 5 feet 10 inches (177 cm) |
| Weight | 136.69 lbs (62 kg) |
| Zodiac Sign | Scorpio |
| Chinese Zodiac Sign | Tiger |
| Blood Type | O |
| MBTI | INTJ |
| Position | Main Vocalist |
| @youngsaeng17 |
Kim Kyujong
| Full Name | Kim Kyu-jong |
| Birthday | February 24, 1987 |
| Birthplace | Jeonbuk, Jeonju, South Korea |
| Age | 39 years and 4 months old |
| Height | 6 feet 0 inches (183 cm) |
| Weight | 149.91 lbs (68 kg) |
| Zodiac Sign | Pisces |
| Chinese Zodiac Sign | Rabbit |
| Blood Type | A |
| MBTI | ENFP |
| Position | Main Rapper, Vocalist, Maknae |
| @jdream_kyujong |
Member Ages: Oldest to Youngest
| Member | Birthday | Age |
|---|---|---|
| Kim Hyunjoong | June 06, 1986 | 40 years, 18 days old |
| Heo Youngsaeng | November 03, 1986 | 39 years, 7 months, 21 days old |
| Kim Kyujong | February 24, 1987 | 39 years, 4 months old |
FAQs
How many members are in FIVE O ONE?
FIVE O ONE is a 3-member K-pop boy group. The group consists of Kim Hyunjoong, Heo Youngsaeng, and Kim Kyujong.
When did FIVE O ONE debut?
FIVE O ONE debuted on December 18, 2025, with their single Last Christmas.
