Artist
Kim Dong-hyun
Kim Dong-hyun (김동현), born November 17, 1981 in Suwon, South Korea, is a retired UFC welterweight fighter and one of the most recognisable faces in Korean entertainment. Nicknamed "Stun Gun" for his relentless grappling pressure, he compiled a 22-4-1 professional MMA record and was the second Korean fighter ever signed by the UFC. His martial arts credentials are formidable: 4th dan black belt in Judo, 3rd dan in Taekwondo, 1st dan in Hapkido, and brown belt in Brazilian jiu-jitsu.
Kim began his professional career in the Japanese promotion DEEP and South Korea's Spirit MC before earning his UFC contract, where he competed at welterweight from 2007 to 2017. A 2009 win at UFC 100 over T.J. Grant and a 2010 submission of Nate Diaz helped establish him as the highest-ranked Korean MMA fighter in the world at his peak.
After retiring in 2017, Kim built a substantial television career. His warmth and credibility made him a natural for variety: Master in the House (2017-2023), The Return of Superman (2013-), Strong Heart (2009-2013), and DoReMi Market (2018-) all featured him prominently. His YouTube channel @stungunTV has topped 1 million subscribers with 657 million views. He captained Team South Korea on Physical: Asia in late 2025, where his combat sports pedigree made him the most experienced media personality on the show. Kim has been married to Song Ha-yul since 2018 and is a father of three.
1 articles7 creditsDebut: January 1, 2019South Korean
Gallery
Kim Dong-hyun at a 2012 UFC event. Photo: Acrofan / CC BY-SA 3.0
Filmography
2025
Physical: AsiaVariety Show
Team Korea Captain
2024
Physical 100Variety Show
Contestant, Season 2
2018
DoReMi MarketVariety Show
Regular Cast
2017
Master in the HouseVariety Show
Regular Cast (2017-2023)
2014
Law of the JungleVariety Show
Contestant
2012
The Return of SupermanVariety Show
Regular Cast
2010
Strong HeartVariety Show
Regular Cast
Fans Also Ask
Who is Kim Dong-hyun?
Kim Dong-hyun (김동현), born November 17, 1981 in Suwon, South Korea, is a retired UFC welterweight fighter and one of South Korea's most recognizable entertainment personalities. Nicknamed Stun Gun for his wrestling-heavy grappling style, he compiled a 22-4-1 professional MMA record and was the highest-ranked Korean fighter in the UFC during his active career.
What is Kim Dong-hyun's MMA record?
Kim Dong-hyun finished his professional MMA career with 22 wins, 4 losses, and 1 draw across fights from 2004 to 2017. He won 9 bouts by knockout, 2 by submission, and 11 by decision. He holds a 4th dan black belt in Judo, 3rd dan in Taekwondo, 1st dan in Hapkido, and a brown belt in Brazilian jiu-jitsu.
What Korean variety shows has Kim Dong-hyun appeared on?
After retiring from MMA, Kim Dong-hyun became a fixture in Korean variety television. He was a long-running regular on Master in the House (2017-2023), DoReMi Market, The Return of Superman, Strong Heart, and Law of the Jungle. He also competed in Physical 100 Season 2 (2024) and captained Team South Korea in Physical: Asia (2025).
What is Kim Dong-hyun's YouTube channel?
Kim Dong-hyun runs the YouTube channel called Maemi Kim (매미킴) at @stungunTV, where he posts content about family life, fitness, and daily adventures. The channel has surpassed 1 million subscribers, reflecting his smooth transition from MMA star to Korean content creator.
What was Kim Dong-hyun's role in Physical: Asia?
Kim Dong-hyun served as the captain of Team South Korea in Physical: Asia, Netflix's 2025 international athletic competition series that pits elite athletes from across Asia against each other. He led a squad that included Amotti, Yun Sung-bin, Kim Min-jae, Jang Eun-sil, and Choi Seung-yeon.
