BTOB (비투비) is a South Korean boy group that debuted on March 21, 2012 under CUBE Entertainment, with the name standing for “Born To Beat,” symbolizing their goal to overcome expectations through music. Known for their exceptional vocal strength, emotional ballads, and self-produced tracks, BTOB has built a strong reputation as a performance-stable and musically credible idol group. Over more than a decade of activity, they have earned the loyal support of their fandom, Melody, through heartfelt songs, live performances, and sincere communication that sets them apart in the K-pop industry.
Seo Eunkwang
- Name (English): Seo Eun-kwang
- Name (Korean): 서은광
- Revised Romanization: Seo Eungwang
- Birthdate: November 22, 1990
- Age: 35
- Birthplace: Yongin, South Korea
- Nationality: South Korean
- Debut: 2012
- Label: BtoB Company
- Position: Leader, main vocalist
- Height: 171 cm
- Weight: 61 kg
- Blood Type: A
- MBTI: ESFJ
- Social: X, Instagram
Seo Eunkwang (서은광) is the leader and main vocalist of BTOB, widely respected for his powerful high notes, musical-theater-style vocal technique, and dependable leadership. Born on November 22, 1990, in Seoul, South Korea, Eunkwang is known as the group’s positive energy source, balancing emotional ballad delivery with a bright variety presence. As a leader, he successfully guided BTOB through military service eras while maintaining close connections with fans through concerts, radio, and live broadcasts, and his work with vocal sub-unit BTOB BLUE further highlights his status as one of his generation’s representative main vocalists.
Lee Minhyuk
- Name (English): Lee Min-hyuk
- Name (Korean): 이민혁
- Revised Romanization: I Minhyeok
- Birthdate: November 29, 1990
- Age: 35
- Birthplace: Seoul, South Korea
- Nationality: South Korean
- Debut: 2012
- Label: BtoB Company
- Position: Main rapper
- Height: 171 cm
- Weight: 67 kg
- Blood Type: A
- MBTI: ISTJ
- Social: Instagram, X
Lee Minhyuk (이민혁), also known by his solo stage name HUTA, is BTOB’s rapper, vocalist, visual, and all-around performer, recognized for his athletic stage presence and charismatic rap tone. Born in Seoul, South Korea, Minhyuk is admired for his versatility across music, dance, acting, composition, and variety shows. His solo work as HUTA explores darker, more intense concepts with self-produced tracks, while within BTOB, he actively participates in lyric writing and rap-making, adding depth and storytelling to the group’s diverse discography.
Lee Changsub
- Name (English): Lee Chang-sub
- Name (Korean): 이창섭
- Revised Romanization: I Changseop
- Birthdate: February 26, 1991
- Age: 34
- Birthplace: Suwon, Gyeonggi-do, South Korea
- Nationality: South Korean
- Debut: 2012
- Position: Lead vocalist
- Height: 173cm
- Weight: 67kg
- Blood Type: O
- MBTI: INFJ
- Social: Instagram, X
Lee Changsub (이창섭) is one of BTOB’s main vocalists, loved for his distinctive vocal color, strong resonance, and emotionally expressive singing style. Born in 1991 in South Korea, Changsub showcases his vocal strength most prominently in ballads and as a member of the vocal-focused sub-unit BTOB BLUE. While he is known for his humorous and quirky personality on variety shows and fan content, his live stages and musical performances reveal a serious and artistic side that reinforces BTOB’s image as a vocally driven and performance-reliable group.
Im Hyunsik
- Name (English): Lim Hyun-sik (Im Hyun-sik)
- Name (Korean): 임현식
- Birthdate: March 7, 1992
- Age: 33
- Birthplace: Seoul, South Korea
- Nationality: South Korean
- Debut: 2012
- Position: Lead vocalist
- Height: 175cm
- Blood Type: A
- MBTI: INTP
- Social: Instagram, X
Im Hyunsik (임현식) is BTOB’s vocalist, composer, and producer, often described as the group’s musical core due to his major role in creating their signature sound. Born in Seoul, South Korea, Hyunsik contributed to composing and producing many of BTOB’s most emotional and beloved songs, including fan-favorite ballads that define their nostalgic style. With his warm vocal tone, guitar skills, and introspective songwriting, his solo releases highlight a band-oriented and lyrical approach, strengthening BTOB’s reputation as a self-producing idol group with genuine musical identity.
Peniel
- Name (English): Peniel Shin
- Name (Korean): 프니엘 신
- Other Name (English): Shin Dong-geun
- Other Name (Korean): 신동근
- Revised Romanization: Sin Donggeun
- Birthdate: March 10, 1993
- Age: 32
- Birthplace: Chicago, Illinois, United States
- Nationality: Korean-American
- Debut: 2012
- Position: Lead rapper, main dancer
- Height: 174cm
- Blood Type: B
- MBTI: ESTP
- Social: Instagram, X
Peniel (프니엘), whose full name is Peniel Dong Shin (Shin Dong-geun), is BTOB’s rapper and dancer and the only member born and raised in Chicago, United States. As a Korean-American idol fluent in English, he plays a key role in communicating with international fans and supporting BTOB’s global activities. Known for his relaxed humor, confident stage presence, and clean dance lines, Peniel also expresses creativity through podcasts, YouTube content, and photography, offering fans a deeper look into his artistic personality beyond music promotions.
Yook Sungjae
- Name (English): Yook Sung-jae
- Name (Korean): 육성재
- Revised Romanization: Yuk Seongjae
- Birthdate: May 2, 1995
- Age: 30
- Birthplace: Yongin, South Korea
- Nationality: South Korean
- Debut: 2012
- Position: Sub vocalist
- Height: 180cm
- Weight: 73kg
- Blood Type: A
- MBTI: ENTP
- Social Media: Instagram, X
Yook Sungjae (육성재) is BTOB’s youngest member (maknae), vocalist, and visual, who gained widespread public recognition through successful drama roles and popular variety show appearances. Born on May 2, 1995, Sungjae helped introduce BTOB to a broader audience beyond K-pop fans, establishing himself as a well-known all-around entertainer. His warm yet powerful vocal tone adds freshness to the group’s sound, and his ability to balance playful charm with mature performances makes him a key contributor to BTOB’s continued mainstream appeal.
BTOB Members Summary
| Stage Name | Birth Name | Position(s) | Date of Birth | Nationality |
|---|---|---|---|---|
| Seo Eunkwang | Seo Eun-kwang (서은광) | Leader, Main Vocalist | November 22, 1990 | Korean |
| Lee Minhyuk (HUTA) | Lee Min-hyuk (이민혁) | Rapper, Vocalist, Visual | November 29, 1990 | Korean |
| Lee Changsub | Lee Chang-sub (이창섭) | Main Vocalist | February 26, 1991 | Korean |
| Im Hyunsik | Im Hyun-sik (임현식) | Vocalist, Producer | March 7, 1992 | Korean |
| Peniel | Peniel Dong Shin (신동근) | Rapper, Dancer | March 10, 1993 | Korean-American |
| Yook Sungjae | Yook Sung-jae (육성재) | Vocalist, Visual, Maknae | May 2, 1995 | Korean |
