Korean MMA fighters have been a force to reckon with for nearly two decades.
Here are the best ones in the UFC along with some you haven’t heard of!
Quick Summary
- Sung Hoon Choo
- Chan Sung Jung
- Dong Hyun Kim
- Doo Ho Choi
7. Seo Hee Ham (함서희)
Just like Michelle Waterson, Seo Hee Ham is another case of being undersized for most of her career.
Even at a size disadvantage, she managed to get a win over Courtney Casey in the UFC, who’s a tough out for anyone. Seo Hee Ham was released from the organization after two losses in a row.
Nicknamed “Hamderlei Silva” early in her career for being aggressive, she’s still fighting and has been quietly undefeated for the last 5 years in Rizin and One Championship.
Seo Hee Ham has improved tremendously from being a straightforward brawler with a mean straight left to developing good footwork, stamina and feints.
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Capturing a One Championship title would be a perfect way to cap off her career.
6. Kyung Ho Kang (강경호)
One of my favorite Korean fighters stylistically to watch, Kyung Ho Kang has great creative striking and grappling that he blends well.
He’s one of the more versatile fighters on this list with some good wins over Guido Canneti and Brandon Davis.
Kyung Ho Kang has been in the UFC since 2013 which is a feat in itself, but has yet to string together more than 3 wins at a time, which would help justify title contention.
5. Hyun Gyu Lim (임현규)
Probably the heaviest handed of the Korean fighters, his size and power made up for his lack of technique.
He put on some great fights in the UFC against Neil Magny and Mike Perry that ultimately ended in knockout losses, leading to his retirement.
Some feints, striking variety and lateral movement could have easily got him into the top 10.
4. Rae Yoon Ok (옥래윤)
A lot of the top Korean talent is getting scooped up by ONE Championship these days. Rae Yoon Ok is the most talented among the bunch in my opinion.
Decisioning an older Eddie Alvarez and a streaking Christian Lee for the title is no small feat.
Rae Yoon Ok has good fundamentals and all the talent, but his inability to clinch when he’s hurt lost him the One Championship title.
3. Doo Ho Choi (최두호)
One of the biggest “what ifs” in MMA history.
A young, good-looking, likeable knockout artist who was developing a massive fan base, cut down in his prime.
His career is also one of the worst cases of mismanagement and botched coaching I’ve ever seen. In fact, it pushed me to write this article in the first place.
Stylistically, Doo Ho Choi is a pretty stationary fighter with good head movement and fantastic hands.
After a 6-year undefeated streak, they matched him with Cub Swanson, someone you should never stand and trade with. Denis Bermudez was ranked slightly ahead and would have been the perfect step up in my opinion.
The game plan against Cub is take him down and smother him a la Frankie Edgar or circle at kicking range and look for chances to counter. You should never stand in punching range with him. He has too much power. Guess where Doo Ho Choi stays?
It was a banger of a fight for a few rounds, but then became painful and frustrating to watch as Swanson tee’d off on Choi, who fought back valiantly. The corner should have stopped that fight in round 4.
Choi isn’t done yet, but with three knockout losses in a row, it will be hard for him to gain momentum.
After a draw against Kyle Nelson, he looked patient and controlled against the game Bill Algeo and won with a second round knockout.
After a long hiatus, Doo Ho Choi emerged in December 2024 with a masterful performance against surging Nate Landwehr. He was cerebral, didn’t get dragged into a brawl (a hallmark of his opponent), used great head movement, and excellent top control on the mat to finish his opponent in a crucifix. It was the most dominant performance I’ve seen from a Korean fighter in the UFC.
His call out of Bryce Mitchell after was strategic – a perfect balance of risk vs reward. Having Korean Zombie in his corner has led to some improvements inside and out of the cage. Time will tell how far he can go on his sophomore attempt at a title run.
2. Dong Hyun Kim (김동현)
A Judoka who transitioned into an exciting striker, Kim Dong Hyun had a pretty good career.
He was a tall, rangy fighter who preferred to get in close and smother opponents with his superior grappling technique. Dong Hyun Kim was unofficially nicknamed the “Korean backpack” in his early career due to his ability to take opponent’s backs and stay there.
Standing at 185 cm (6ft 1in) in a southpaw stance, he could have given fighters fits with an educated jab and some push kicks. Even without fully using his physical gifts, he managed to best fighters like Nate Diaz, Matt Brown and an uber talented Eric Silva.
Much to the delight of the crowd, he started swinging for the fences at the tail end of his career.
I had the privilege of seeing that beautiful spinning back elbow KO of John Hathaway live in Macau.
At one point in 2014, he was ranked in the Welterweight top ten before losing to the eventual champion, Tyron Woodley.
If this list was based on who’s had the best post martial arts career, KDH would be ranked the highest. He’s gained celebrity status on the Korean talk show circuit and makes a great living off commercials.
1. Chan Sung Jung (정찬성)
Some people have Dong Hyun ahead of Zombie, but it’s a no-brainer to me who the number one Korean MMA fighter of all time is.
A career spanning 15 years, 10 of which were ranked in the top 10 of the premier MMA organization with two title shots. Not to mention names on his resume like Dustin Poirier and Frankie Edgar. He did get Poirier early and Edgar late in their respective careers, but the fact remains that he could have gone all the way.
Zombie had fast, accurate hands, great takedown defense and grappling with an iron chin.
He got his start and nickname by fighting like so many other Korean fighters by marching straight forward and winging power shots. His two fights with Leonard Garcia yielded an all-time classic brawl and a beautiful twister sub win.
Chan Sung Jung evolved into a good counter puncher with underrated head movement and excellent finishing skills. He set records with 7 “performance of the night” bonuses and one of the fastest KOs of all time.
His title fight against Jose Aldo was close for a few rounds until Zombie dislocated his shoulder in the fourth. Aldo, who doesn’t rely on his grappling, mixed in some takedowns which made the fight easier for him.
He could have been champion in another era, but just happened to be around when the arguably greatest featherweight of all-time in Aldo was around. But like they say, “if your grandmother had wheels, she’d be a bicycle”.
Featherweight happens to be the toughest division after Lightweight when it comes to talented fighters.
His last two fights were against and the second and third greatest featherweights in Alexander Volkanovski (potentially the greatest depending on his next few fights) and Max Holloway. He never quit, even when outmatched.
The third and final round of his career started with a classic zombie blitz against Holloway that saw him throw caution to the wind and go out on his shield.
Korean Zombie will be remembered by fans of all backgrounds as a fighter’s fighter and a legend in the sport.
Honorable Mention: Sung Hoon Choo (Yoshihiro Akiyama AKA Sexiyama)
While ethnically Korean, Choo Sung Hoon was born in Japan and opted for citizenship there. (Koreans give him a pass since he moved to Korea to compete for their national judo team, but corruption kept him from making the roster for the 2002 Asian Games. He returned to Japan, made the team and went on to take gold.)
Even though he excelled at judo, Choo Sung Hoon developed some serious power in his hands that led him to notable victories over Alan Belcher and his marvelous tattoo, and recently Shinya Aoki.
His biggest win was during Hero’s light-heavyweight Grand Prix 2006 final round where he recorded a slick submission finish over Melvin Manhoef. This is especially impressive considering the haymakers he had to dodge/absorb. Melvin Manhoef was one of the most dangerous strikers in MMA at the time.
He never won the big one in the UFC, but fought to close losses against Michael Bisping (had him rocked early in the fight) and Jake Shields.
He did win the Sherdog message boards for a while, because the mere mention of him would lead to a chain of Sexiyama jokes.
His post-fighting career is where he’s shined the most with major celebrity status in Korea and Japan.
He’s been gaining popularity in America with his performance on Netflix’s Physical 100.
With Korean boxing in decline, MMA has been stealing a lot of the talented young men and women with violent tendencies.
Korean MMA fighters are athletes who have backgrounds in judo, boxing, taekwondo, and ssireum. You can see them fight in the UFC and One Championship. They’re known for their toughness and tenacity.
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Why hasn’t there been a Korean champion in UFC?
This is a complex answer, but it isn’t for lack of talent.
Korean fighters who make it to the UFC are among the toughest, fastest and hardest hitting, they simply don’t have the fundamentals to compete at the highest level.
Outside of some up-and-coming fighters, I’ve yet to see any who seamlessly mix their martial arts as in takedowns, knees, kicks and elbows. The style I often notice is marching straight forward while head hunting with punches.
They rarely setup strikes with feints and lateral movement and throw every shot with full power, which often leaves them gassed.
Korean Zombie had the best chance of becoming champion, but early wars, two years of mandatory military service and late development of technique (he started training outside of Korea in the twilight of his career) held him back.
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Korean fighters such as Doo Ho Choi have all the tools, but are stymied by poor fundamentals like moving straight forward and back, chin up, hands down and no idea of what to do when hurt. The fight with Cub Swanson is the epitome of this where he should have clinched when Cub was throwing bombs instead of backing up with his chin in the air.
Even someone like Kim Ji Yeon had the talent to beat top fighters like Alexa Grasso, but failed to change up her style of head hunting with hands down and minimal lateral movement.
Korea is still a top-down hierarchical society where many coaches are former judokas or boxers from the regional circuit.
Nothing wrong with those sports, but MMA is a totally different animal and fighters from all around the world congregate in places like Las Vegas and Phuket to hone each other’s skills.
The word of your senior is unquestionable, which is detrimental when they’re confidently incorrect.
Regardless of Korea’s long history of martial arts culture, the country prioritizes academics over athletics and has one of the highest university enrollment rates in the world.
Most parents discourage their children from becoming athletes, especially martial artists. My cousin dreads the fact that her daughter is athletic and prefers to play sports. In fact, after elementary school, parents tend to pull their kids out of Taekwondo Academy and push them into Science and Math. Then the only thing they’ll be hitting is the books (sorry about that one).
For there to be a Korean champion, one would need to follow the lead of someone like Weili Zhang who left her homeland early in her career and trains with the best in the world.