ONEUS is a five-member South Korean boy group under RBW that officially debuted on January 9, 2019, with their first mini-album LIGHT US. The group first gained attention through RBW’s pre-debut project I Shall Debut, where they were introduced as RBW BOYZ before announcing their official name, ONEUS, in June 2018. ONEUS made their first music show appearance on M Countdown and later on Music Bank, marking a strong broadcast debut. The group name combines “ONE” and “US,” symbolizing how each individual fan comes together to create “us,” and reflects their goal of building one world through unity, music, and connection with fans.
ONEUS Group Profile
- Name (English): ONEUS
- Name (Korean): 원어스
- Debut: January 9, 2019
- 1st Mini Album: LIGHT US
- Genres: K-pop, dance, rap, hip-hop
- Agency: RBW
- Fandom (English): TOMOON
- Fandom (Korean): 투문
- Social Media: Instagram, X, Facebook, TikTok, YouTube
- Website: Official website
Seoho
- Name (English): Lee Seo-ho
- Name (Korean): 이서호
- Birthdate: June 7, 1996
- Age: 29
- Birthplace: Busan, South Korea
- Nationality: South Korean
- Position: Main vocalist
- Height: 176cm
- Weight: 61kg
- Blood Type: A
- MBTI: INTP
- Social Media: Instagram
Seoho (SEOHO) is the main vocalist of ONEUS, a South Korean boy group under RBW that debuted in 2019. Known for his signature eye smile and exceptional live vocals, Seoho boasts a wide vocal range, stable high notes, and strong musicality. Before debut, he competed on Produce 101 Season 2 and MIXNINE, and trained under JYP Entertainment before joining RBW. Beyond singing, Seoho excels in dance, rap, and even songwriting, contributing to ONEUS’s albums. Off stage, he is a playful yet thoughtful personality, often described as a warm, four-dimensional mood maker with a charming visual contrast.
Leedo
- Name (English): Kim Gun-hak
- Name (Korean): 김건학
- Birthdate: July 26, 1997
- Age: 28
- Birthplace: Uijeongbu City, Gyeonggi-do, South Korea
- Nationality: South Korean
- Position: Main rapper
- Height: 179cm
- Weight: 80kg
- Blood Type: AB
- MBTI: ISTP
- Social Media: Instagram
Leedo (LEEDO) is the main rapper and a standout all-rounder of ONEUS, a South Korean boy group under RBW that debuted in 2019. Known for his deep, powerful voice and signature “LEE DO” tag, he delivers intense rap while also showcasing surprisingly soft and stable vocals. Before debut, Leedo trained under major agencies including YG Entertainment, appeared on Fantastic Duo Season 2, and participated in MIXNINE. Beyond rapping, he contributes to songwriting and composition, collaborates on SoundCloud projects, and excels in dance with strong stage presence. Off stage, Leedo contrasts his tough image with a shy, polite, and warm personality, earning him strong fan affection.
Keonhee
- Name (English): Lee Keon-hee
- Name (Korean): 이건희
- Birthdate: June 27, 1998
- Age: 27
- Birthplace: Seongnam City, Gyeonggi-do, South Korea
- Nationality: South Korean
- Position: Main vocalist
- Height: 181cm
- Weight: 67kg
- Blood Type: O
- MBTI: ENFP
- Social Media: Instagram
Keonhee (KEONHEE) is a main vocalist and spokesperson of ONEUS, a South Korean boy group under RBW that debuted in 2019. He first gained public attention as an RBW trainee on Produce 101 Season 2 before joining the pre-debut “I Shall Debut” project. Known for his clear, refreshing vocal tone and strong harmony skills, Keonhee excels in emotional ballads and stable live performances. With his tall height, long limbs, and expressive facial acting, he also stands out in dance. Off stage, Keonhee is warm, talkative, highly empathetic, and famously food-loving, earning him recognition as ONEUS’s “gourmet” and a fan-favorite mood maker.
Hwanwoong
- Name (English): Yeo Hwan-woong
- Name (Korean): 여환웅
- Birthdate: August 26, 1998
- Age: 27
- Birthplace: Seoul, South Korea
- Nationality: South Korean
- Position: Main dancer, vocalist
- Height: 168cm
- Weight: 50kg
- Blood Type: A
- MBTI: ISTP
- Social Media: Instagram, TikTok
Hwanwoong (HWANWOONG) is the main dancer and a versatile performer of ONEUS, a South Korean boy group under RBW. Renowned for his exceptional dance skills, he combines fluid, powerful movements with expressive facial acting, making him one of K-pop’s standout idol dancers. A graduate of Seoul Performing Arts High School’s practical dance program, Hwanwoong also contributes as a choreographer, creating routines for ONEUS’s songs. Despite being best known for dance, he has strong vocals and frequently opens the group’s tracks. Off stage, he shows natural leadership, perfectionism, and a playful charm, earning him the nickname “fairy” and “small giant” among fans.
Xion
- Name (English): Son Dong-ju
- Name (Korean): 손동주
- Birthdate: January 10, 2000
- Age: 25
- Birthplace: Suwon-si, Gyeonggi-do, South Korea
- Nationality: South Korean
- Position: Vocalist
- Height: 176cm
- Weight: 56kg
- Blood Type: AB
- MBTI: ISTJ
- Social Media: Instagram
Xion (XION) is the youngest member of ONEUS, a South Korean boy group under RBW. He officially joined the team in 2018 through RBW’s trainee project I Shall Debut, debuting with ONEUS in 2019. Before debut, Xion was known as the twin brother of ONEWE’s Dongmyeong and initially pursued acting, even appearing as a magazine cover model. Despite his short training period, he has steadily grown as a vocalist with a calm, low-toned voice, often handling harmonies and memorable parts. Known as the group’s “visual maknae,” Xion charms fans with his rabbit-like visuals, long eyelashes, and warm, affectionate personality. He is highly active in fan communication and continues to expand his career into acting and solo vocal projects.
ONEUS Members Summary
| Name | Birthdate | Age | Height | Weight | MBTI | Nationality | Position |
|---|---|---|---|---|---|---|---|
| Seoho | June 7, 1996 | 29 | 176 cm | 61 kg | INTP | South Korean | Main Vocalist |
| Leedo | July 26, 1997 | 28 | 179 cm | 80 kg | ISTP | South Korean | Main Rapper |
| Keonhee | June 27, 1998 | 27 | 181 cm | 67 kg | ENFP | South Korean | Main Vocalist |
| Hwanwoong | August 26, 1998 | 27 | 168 cm | 50 kg | ISTP | South Korean | Main Dancer, Vocalist |
| Xion | January 10, 2000 | 25 | 176 cm | 56 kg | ISTJ | South Korean | Vocalist |
