South Korea’s fight scene has produced its share of wild characters, but few have captured the public’s imagination quite like “Yangsan Madman” Se Hoon Choi — a former local “jjang” whose raw, chaotic street fighter energy was first discovered on Korean Zombie’s TV scouting series, Zombie Trip.
What began as a reality‑show experiment, testing Korea’s toughest street fighters against real mixed martial artists, has unexpectedly produced one of the country’s fastest‑rising prospects.
And as of May 9, 2026, Choi is riding a four fight win streak, capped off by a violent first round TKO over Jae Woong Yoon at ZFN 4: Blood Moon. Hanpunch Media has been watching his rise closely, and the story is becoming something special.
A Star Born on “Zombie Trip”
When Chan Sung Jung — the Korean Zombie himself — launched Zombie Trip, the concept was simple: Find the toughest local fighters in Korea and see who can survive against professionals.
Among the dozens of regional “jjangs,” one figure stood out immediately:
A wiry, fearless brawler from Yangsan with zero hesitation and zero fear.
Producers called him Yangsan Madman. Fans called him the show’s breakout. Coaches called him a problem, in the best way. Choi didn’t just show toughness. He showed instinct, timing, and a natural feel for violence that couldn’t be taught.
You can catch the video here:
From TV Chaos to Real Cage Success
Most reality show fighters fade out once the cameras stop rolling. Choi did the opposite.
He doubled down.
He trained. He tightened his striking. He learned to channel the chaos instead of drowning in it.
And the results came fast.
Four straight wins. Four statements.
ZFN 2 — TKO win over Jae Geun Yang (Round 1, 2:39)
Choi made is professional debut in December 2024 on ZFN 2 where he faced off against Jae Geun Yang (who also made his debut that night). Choi showed surprising composure. He pressured Yang with confidence, stayed balanced in the pocket, and unleashed short, sharp strikes that overwhelmed his opponent. The finish came from sustained pressure that forced the referee to step in winning his pro debut with an impressive TKO win.
ZFN Origin — Majority Decision win over Jun Gu Kim
His second fight tested his discipline. Jun Gu Kim forced Choi into a more tactical battle, pushing him to show conditioning, defense, and patience. Choi responded with a measured version of his trademark aggression. He cut off the cage, landed the cleaner shots, and controlled the pace long enough to secure a majority decision. This was the fight that proved he could win even when the finish did not come.
ZFN 3 — TKO win over Bum Seok Jang (Round 1, 4:41)
This was the breakout performance. Against Bum Seok Jang, Choi finally unleashed the full violence fans expected from the Yangsan Madman. He pressured early, found his rhythm, and cracked Jang with a clean sequence that forced the stoppage at 4:41 of the first round. This is the moment he looked like a real finisher.
ZFN 4 Blood Moon — TKO win over Jae Woong Yoon (Round 1, 1:39)
By the time he stepped into the cage at ZFN 4: Blood Moon, Choi wasn’t a novelty act anymore, he was a legitimate prospect. Against Jae Woong Yoon, he fought like a man who knew exactly what he wanted. Pressure early. Elbows inside. A finishing instinct that felt almost predatory. The referee stepped in at 1:39 of Round 1, giving Choi his fourth consecutive victory and his most polished performance to date.
Se Hoon Choi is connecting with fans because he represents something rare in modern MMA: a fighter who feels real, a rising prospect with real momentum. We look forward to watching every step of Choi’s climb.
Be sure to follow ZFN’s official Youtube Channel for more updates and future events, event replays and more!
