Woonhak Profile: Age, Height, Career, Facts & More
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As the youngest member of BOYNEXTDOOR, Woonhak has done something rare in K-pop: fans have watched him quite literally grow up in real time, debuting at just 16 years old and maturing into a confident vocalist, songwriter, and beloved “golden maknae” over the years since.
His teddy-bear warmth and playful energy have made him one of the group’s most consistently adored members, even as his voice — and his height — have both grown considerably since debut.
This complete profile breaks down everything fans want to know about Woonhak — his age, height, career, personality, and the fun facts that keep circulating through the fandom.
Quick Facts About Woonhak
- Real Name: Kim Woon-hak (김운학)
- Stage Name: Woonhak (운학)
- Birth Date: November 29, 2006
- Zodiac Sign: Sagittarius
- Birthplace: Busan, South Korea (raised in Suwon, Gyeonggi Province)
- Position: Vocalist, Rapper, Dancer, Maknae (youngest member)
- Height: Approximately 180–184 cm (5’11″–6’0″)
- Blood Type: A
- Nationality: South Korean
- Agency: KOZ Entertainment (HYBE)
- Group: BOYNEXTDOOR
- MBTI: ENFP (previously listed as ENFJ)
- Education: Hanlim Art School
Early Life and Background
Woonhak was born Kim Woon-hak on November 29, 2006, in Busan, South Korea, and grew up in Suwon, Gyeonggi Province.
He trained under KOZ Entertainment for approximately three years before debut, joining the group at just 16 years old — making him the only member of BOYNEXTDOOR who was still a minor at the time of the group’s launch.
He attended Hanlim Art School, a well-known training ground for numerous fifth-generation idols, further developing his vocal and performance skills alongside his formal education.
Career Highlights
Debut and BOYNEXTDOOR’s Formation Woonhak officially debuted as a member of BOYNEXTDOOR on May 30, 2023, with the single album WHO!, marking the launch of KOZ Entertainment’s first-ever boy group.
As the group’s maknae, he was just 16 (Korean age 17) at the time — still wearing braces and dealing with a cracking voice — a detail fans often point to fondly when discussing how much he’s grown since debut.
A Growing Songwriter Like several of his groupmates, Woonhak has developed a genuine interest in songwriting as his career has progressed, contributing to BOYNEXTDOOR’s creative process alongside members like Jaehyun and Taesan.
That growing involvement reflects the group’s broader identity as a lineup of genuinely hands-on musicians rather than performers alone.
Chart Milestones and Global Reach As part of BOYNEXTDOOR, Woonhak contributed to the group’s growing chart success, including their track “19.99,” which scored the group’s first entry at Number 1 on Billboard’s World Albums chart and placed them inside the Billboard 200’s top 40.
BOYNEXTDOOR went on to perform at major festival stages across South Korea, Spain, Japan, Hong Kong, and the United States, and were featured in a K-pop exhibit at the Grammy Museum in Los Angeles in 2024.
Japan Debut BOYNEXTDOOR expanded into the Japanese market on July 10, 2024, with the maxi single “And,,” featuring Japanese re-recordings of the group’s earlier singles alongside the original Japanese-language track “Good Day.”
The release marked the group’s third Number 1 single on Japan’s Oricon Chart.
Personality and Public Image
Woonhak is widely regarded as the “perfect maknae” by fans — playful, talented, hardworking, and endlessly lovable, with a teddy-bear-like warmth that’s made him easy to root for since his earliest days in the group.
He’s known for his deep affection toward the people he loves, including a close bond with his younger sister and genuine warmth toward his fellow members, all of which have shaped his reputation as one of BOYNEXTDOOR’s most emotionally open personalities.
Fans have particularly enjoyed watching his confidence grow alongside his physical growth, as the once-shy youngest member has developed into a more assertive, self-assured performer.
That growth arc has become one of the most beloved storylines within BOYNEXTDOOR’s fandom — early interviews and content show a noticeably more reserved, soft-spoken teenager, while more recent appearances reveal someone who’s grown comfortable taking the lead in group banter and even initiating jokes at his own expense.
Members have noted that despite being the youngest, Woonhak has never been treated as simply “the baby” of the group; instead, he’s earned genuine respect for his work ethic and his willingness to push himself vocally and creatively as BOYNEXTDOOR’s discography has grown more ambitious
Fun Facts and Trivia
- Woonhak was only 16 years old at BOYNEXTDOOR’s debut, the youngest member of the group by a significant margin.
- He’s grown noticeably taller since debut, with fans jokingly wondering if he’s “still growing.”
- He’s said that if he were a cartoon character, he’d be Monkey D. Luffy from One Piece.
- His MBTI has been listed as both ENFP and ENFJ across different profile updates.
- He has a close, affectionate bond with his younger sister.
- He shares the same MBTI type, ENFP, as leader Jaehyun.
- His representative emoji is a cow, reflecting his gentle, easygoing personality.
Social Media and Where to Follow
Woonhak is active across BOYNEXTDOOR’s official group platforms, including Instagram, X (formerly Twitter), TikTok, and YouTube, where his vocal performances, playful personality, and behind-the-scenes moments from the group’s world tour continue to draw significant fan engagement.
As the group’s youngest member, his content often highlights just how much he’s grown and matured since debuting as a 16-year-old.
His warm, teddy-bear-like personality continues to be one of the most consistently beloved elements of BOYNEXTDOOR’s fan interactions, with many describing him as the group’s emotional glue.
As BOYNEXTDOOR’s global reach continues to expand, fans remain especially invested in following Woonhak’s ongoing growth, both as a performer and as a person.
Conclusion
From a 16-year-old debuting with braces and a cracking voice to BOYNEXTDOOR’s confident, beloved “golden maknae,” Woonhak’s career reflects one of K-pop’s most heartwarming growth stories.
Whether fans are drawn in by his warm, teddy-bear personality, his growing songwriting contributions, his playful sense of humor, or the sheer joy of watching him mature before their eyes, Woonhak continues to prove why he’s regarded as one of the most beloved maknaes of his generation.
As BOYNEXTDOOR’s global reach continues to expand, all eyes remain on Woonhak to see how much further he’ll grow next.
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