Overview
Won Il Kwon (권원일) is a South Korean bantamweight mixed martial artist known by the nickname “Pretty Boy.”
Born June 24, 1995, Won Il Kwon stands approximately 5’10” (179 cm) with a 71.5-inch reach and has established himself as one of the most dangerous knockout artists produced by South Korea’s lighter weight divisions.
Won Il Kwon currently holds a 14-6 professional record, with 12 of his 14 victories coming by knockout or technical knockout. That means approximately 86 percent of his professional wins have come by strikes, an unusually high finishing rate for a career bantamweight.
After beginning his career on the Asian regional circuit, Kwon signed with ONE Championship and developed into one of the promotion’s leading bantamweights. Across 14 ONE appearances, he compiled a 9-5 promotional record, with all nine victories coming by KO/TKO. His run eventually earned him a shot at Fabricio Andrade’s ONE Bantamweight MMA World Championship in January 2025.
Following his departure from ONE, Kwon pursued a path toward the UFC through Dana White’s Contender Series in October 2025, where he was stopped late in the second round by Juan Diaz.
Early Life & Background
Won Il Kwon’s martial arts background began considerably earlier than his MMA career.
Growing up in South Korea, Kwon joined his elementary school’s taekwondo team and demonstrated enough ability to progress from provincial competition to the national youth level. However, he stopped training after elementary school and struggled with his direction during his teenage years.
According to Kwon’s account to ONE Championship, disciplinary problems eventually resulted in him being told he would have to transfer schools. Seeing his mother’s reaction became an important turning point, motivating him to reconsider the direction his life was taking.
Martial arts ultimately provided that direction.
Kwon eventually transitioned into mixed martial arts and began competing professionally in the mid-2010s. His early career took him through Korean, Japanese and Filipino regional promotions before he attracted the attention of ONE Championship.
He entered ONE with an undefeated 4-0 professional record.
Fighting Style
Elite Finishing Power
Won Il Kwon’s defining characteristic is straightforward: he is a knockout artist in a division where knockout artists are relatively rare.
Twelve of his 14 professional victories have come by KO or TKO. More remarkably, every one of his nine victories during his ONE Championship career ended by strikes.
He does not simply accumulate damage and wait for referees to intervene. Kwon has repeatedly demonstrated the ability to abruptly change fights with clean, powerful combinations.
Boxing-Oriented Offense
Although Won Il Kwon’s martial arts foundation began with taekwondo, his mature MMA style is considerably more boxing-oriented.
He fights from an orthodox stance and is at his best when operating aggressively in the pocket, where his speed and punching power become especially dangerous.
Kwon is comfortable pressuring opponents, creating exchanges and trusting his power to produce a decisive moment.
Body Attacks
One of the more distinctive elements of Kwon’s offense has been his willingness to attack the body.
Rather than functioning exclusively as a headhunter, Kwon mixes punches between levels and has demonstrated an ability to hurt opponents through sustained body work.
That offensive diversity becomes particularly valuable against opponents who maintain high guards specifically because of Kwon’s reputation as a knockout puncher.
Killer Instinct
Once Kwon hurts an opponent, he rarely allows them significant recovery time.
His record contains numerous early finishes, reflecting both his power and his ability to recognize when an opponent is compromised.
ONE’s own statistics illustrate this clearly: across his 14 appearances with the organization, Kwon’s fights averaged less than four minutes in total duration.
High-Risk Defense
The same aggression responsible for Kwon’s highlight-reel victories has also produced vulnerability.
Three of his six professional defeats have come by KO/TKO, while another two have come by submission.
Won Il Kwon’s willingness to remain in dangerous exchanges creates opportunities for both fighters. Against elite opposition capable of surviving his initial offense or countering during combinations, that aggression can become a liability.
Professional Career
Won Il Kwon began his professional MMA career in the mid-2010s and quickly established himself as an intriguing Korean prospect.
His early victories included a first-round knockout of Keisuke Iwata and a first-round rear-naked choke submission of Sung Hyun Kim at TOP FC 8. He later added victories over Arlan Faurillo and Toshihiro Shimizu, bringing his record to 4-0.
That undefeated start earned Kwon an opportunity with ONE Championship in 2019.
His ONE career initially included some inconsistency as he adjusted to significantly stronger international competition. But over time, Kwon’s knockout power translated remarkably well to the larger stage.
He eventually established himself among ONE’s leading bantamweights, producing a succession of stoppage victories.
A particularly important run began in 2022.
Won Il Kwon stopped Mark Abelardo in the third round at ONE 163 before defeating previously unbeaten Artem Belakh by second-round TKO at ONE Fight Night 11 in June 2023.
He followed that performance by stopping Shinechagtga Zoltsetseg with ground-and-pound in the second round at ONE Fight Night 18 in January 2024.
Those victories ultimately positioned Kwon for the biggest opportunity of his career.
On January 24, 2025, he challenged Fabricio Andrade for the ONE Bantamweight MMA World Championship at ONE 170 in Bangkok. Andrade demonstrated why he was champion, hurting Kwon with a body shot and securing the TKO only 42 seconds into the opening round.
Won Il Kwon subsequently departed ONE after compiling an impressive 9-5 promotional record with nine finishes. ONE currently identifies him as a former athlete.
His next opportunity came in the United States.
Won Il Kwon competed against Juan Diaz on Dana White’s Contender Series on October 14, 2025, with an opportunity to potentially earn a UFC contract. Kwon entered as the betting favorite, but Diaz stopped him with a spinning back elbow at 4:58 of the second round.
The defeat dropped Won Il Kwon’s professional record to 14-6.
Career Highlights
- 14-6 professional MMA record.
- Born June 24, 1995.
- Stands approximately 5’10” (179 cm) with a 71.5-inch reach.
- Known internationally as “Pretty Boy.”
- Former ONE Championship Bantamweight World Championship challenger.
- Compiled a 9-5 record in ONE Championship.
- Won all nine of his ONE Championship victories by KO/TKO.
- 12 of 14 career victories by KO/TKO, an 86 percent knockout rate among his wins.
- Defeated Mark Abelardo by third-round TKO at ONE 163.
- Stopped Artem Belakh in the second round at ONE Fight Night 11.
- Defeated Shinechagtga Zoltsetseg by second-round TKO at ONE Fight Night 18.
- Challenged Fabricio Andrade for the ONE Bantamweight MMA World Championship at ONE 170 in January 2025.
- Competed on Dana White’s Contender Series in October 2025.
- Has competed professionally across multiple countries and against international-level opposition throughout his career.
Summary & Trajectory
Won Il Kwon has established himself as one of the most dangerous knockout artists produced by South Korean MMA. With a 14-6 professional record and 12 victories by KO/TKO, “Pretty Boy” has built his reputation around aggressive boxing, speed and legitimate finishing power.
His career reached its highest level during a lengthy run with ONE Championship, where Won Il Kwon accumulated nine victories—all by knockout or technical knockout—and eventually earned a shot at Fabricio Andrade’s ONE Bantamweight MMA World Championship.
Although he fell short against Andrade and subsequently lost his Dana White’s Contender Series appearance against Juan Diaz, those setbacks should be viewed within the context of the level at which Kwon has been competing.
Unlike many Korean fighters whose international potential remains theoretical, Won Il Kwon has already proven that his skill set translates outside Korea. He became a legitimate contender in a major international promotion, fought for a world championship and later pursued a UFC opportunity through the Contender Series.
At 31, the next chapter of Won Il Kwon’s career will be particularly interesting. He remains a proven finisher with considerable international experience, but consecutive losses leave him needing to rebuild momentum and determine where the next stage of his career will take place.
Won Il Kwon belongs in a different category from most Korean regional prospects.
His international potential no longer needs to be projected—he already demonstrated it.
Kwon spent 14 fights in ONE Championship, won nine of them, finished every opponent he defeated, and worked his way into a world championship opportunity.
That résumé alone places him among the more accomplished Korean MMA fighters of his generation.
What makes Kwon particularly interesting is how he accomplished it.
South Korea has produced numerous technically strong fighters, but relatively few lighter-weight athletes with Kwon's consistent ability to end fights through strikes. Twelve knockouts in 14 professional victories is an exceptional statistic for a bantamweight.
His offensive ability has never really been the question.
The question is whether Kwon can balance that aggression against the highest levels of competition.
His losses to Fabricio Andrade and Juan Diaz illustrate the danger. Against Andrade, Kwon was stopped by a body shot in only 42 seconds. Against Diaz, he was knocked out by a spinning back elbow with just two seconds remaining in the second round.
Kwon's style creates decisive fights, but it can work in both directions.
That should not overshadow what he accomplished in ONE. His knockout victories over fighters such as Mark Abelardo, Artem Belakh and Shinechagtga Zoltsetseg demonstrated that his power remains effective against experienced international competition.
The more interesting question now is what comes next.
At 31, Kwon is no longer a young prospect, but he is also not necessarily approaching the end of his competitive window. His combination of international name recognition, knockout power and major-promotion experience should continue to make him an attractive fighter for promotions in Korea, Japan and elsewhere in Asia.
For HanPunch, Kwon should be viewed as one of the benchmark fighters for the current generation of Korean bantamweights. Younger Korean prospects aspiring to compete internationally are essentially trying to reach the level Kwon already reached: major international promotion, ranked opposition, world-title contention and eventually an opportunity to enter the UFC.
HanPunch views Won Il Kwon as one of South Korea's most proven international-level bantamweights and one of the country's premier knockout artists. The Fabricio Andrade and Contender Series losses have created uncertainty around the next chapter of his career, but they do not erase what “Pretty Boy” has already demonstrated: when Kwon is at his best, very few Korean fighters in the lighter divisions possess a more dangerous finishing game.
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