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Hyo Kyen Kim
September 23, 1984

South Korea
Nationality Korean
Known for B-boying
Movement Hip hop

Physicx (Real name: Hyo Keun Kim, Hangul: 김효근, born on 23 September 1984 in South Korea) is a South Korean b-boy, who is currently a member of b-boy crews Rivers crew,[1] Floorgangz, and formerly a member of the Korean all-star crew, Project Soul before it was disbanded.



Physicx's journey in becoming one of the best bboys in the world all started out during his middle school, when he was inspired and moved after watching other bboys. This started his deep passion into bboying in 1998. Extreme, his passion may have been, but his parents opposed it, as it was believed that breaking was a practice for delinquents. But that never stopped him. His intense passion led him to continue pursuing his dream of becoming a professional bboy. After graduating from school he moved to Seoul, Korea, where he began his professional bboy career. Joining Rivers Crew, he was able to earn a great deal of respect from the Korean bboy community.

The name soon Physicx swept around the world after the UK B-Boy Championship, where he displayed his unimaginable and unique skills to the world for the first time and took the title as winner of the solo tournament. The world found out and discovered the hidden talent behind Physicx.

His moves were beyond unimaginable, as some of his moves had never before been seen in bboying history, such as his signature move, the "waistbreaker," or the "hollowback swing". The world was astounded to see moves such 16 rotations of an elbow spin with only one push and spinning flags, among his other clean moves. Ever since, many new generations of bboys and bgirls have begun to idolize him, and many other professional bboys have shown him much respect. The style Physicx brought onto the floor was unique even in his own category: powerheads. He is known to have his own style even though he focuses on power. However, since 2009, Physicx's style moved towards foundation as an expression of what Physicx has learned while being active in the b-boy field.[2]

This shift in style has earned him respect inside the breaker community as it focuses more on the musicality of b-boying, something he often neglected before.


B-boy Physicx suffered from a shoulder injury in 2008 and had to undergo surgery causing him to lose many of his moves, however he publicly stated that he focuses most of his life on dancing to regain his past skills.[2]


Physicx has won many international-level tournaments both as a member of a crew and as an individual. His most notable crew achievements include a R-16 Korea and Bboy Unit Korea title with Rivers in 2007, and UK B-Boy Championships titles with Project Soul in 2002, 2004 and 2005. As an individual, he won the solo title at UK B-Boy Championships in 2004. He also competed in the 2005 Red Bull BC One tournament involving 1 on 1 battles between the top 16 b-boys in the world, in which he was eliminated in the first round by eventual champion Lilou.

Dancing Style[edit]

Until 2009, Physicx stated that his main focus was on power moves. But after he underwent surgery, becoming unable to hit his old signature moves and not wanting to risk another shoulder injury, he instead moved on to improving foundation. Although Physicx has stated that he still enjoys the powermove aspect of b-boying the most, he feels that it is natural for breakers to move more towards foundation as they gain experience in the b-boying world.[2]

Notable Appearances[edit]

Music Videos/Concerts[edit]

  • 1999 Seoul, Korea Beat Up Commercial Main dancers
  • 2001 Seoul, Korea Rush Hour 2 OST music Video dancers

Commercials/TV Appearances[edit]

  • 2002 Beijing, China CCTV 4 Show Program, Special Guest
  • 2002 Seoul, Korea Sneakers Commercial main dancers
  • 2003 Beijing, China Korean recording artist Kang Ta special show case
  • 2003 Seoul, Korea M-Net Hiphop the vibe opening show dancers
  • 2003 Seoul, Korea Sam sung anycall cell phone commercial dancers
  • 2004 Seoul, Korea Sam Sung Anycall Cell Phone Commercial Dancers
  • 2004 Holland Sims MP3 commercial main dancer

Events/Judge/special Guest[edit]

  • 2002 UK Bboy Championship Crew 1st
  • 2002 Korean Hiphop festival Concert Special Guest
  • 2003 UK B-Boy Championship Team Category, UK (2nd Place)
  • 2003 UK Bboy Championship Crew 2nd
  • 2004 Rennes, France Hiphop planet champion
  • 2004 Beijing, China Beijing Bboy Battle Special Guest / Judge
  • 2004 UK Bboy Championships Crew 1st
  • 2004 Levis 3vs3 1st
  • 2004 Freestyle session Korea crew vs crew 2nd
  • 2004 UK Bboy Championships Solo 1st
  • 2005 UK Bboy Championships Crew 1st
  • 2005 B-boy Unit vol.7 crew vs crew 1st
  • 2005 Ground Control solo 1st
  • 2005 Participation at Red Bull BCOne 1vs1
  • 2005 France solo battle competition 1st
  • 2005 Participation at IBE all vs all
  • 2006 Ground Control solo 1st
  • 2006 Bigbang M/V
  • 2006 Nike CF
  • 2006 UK B-boy championship Korea crew vs crew 2nd
  • 2006 b-boy Challenge crew vs crew 1st
  • 2006 Boty Korea crew vs crew 2nd
  • 2006 Armory Cup Korea crew vs crew 1st
  • 2007 R-16 internetional crew vs crew 1st
  • 2007 B-boy Unit vol.9 crew vs crew 1st
  • 2007 Fano, Italy Born to The Floor Special Guest / Judge
  • 2008 R-16 internetional crew vs crew 4th
  • 2008 B-boy cyon championship crew vs crew 2nd
  • 2008 KB b-boy WORLD Masters crew vs crew 1st
  • 2008 B-boy championship Chuncheon
  • 2008 Jeonju Bboy Grandprix crew vs crew
  • 2008 Chelles Pro Battle 2vs2 2nd
  • 2010 Vancouver Battle of T.N.G - Just Battle 3 on 3
  • 2010 Atlanta, Georgia Evolution 4
  • 2011 R16 Korea Solo Battle
  • 2012 Challenge India Judge
  • 2012 Special Guest at Manipur Sangai Festival
  • 2012 Special Judge at The Culture- Mumbai
  • 2014 Special Judge at R16 Indonesia - Kota Kasablanka Mall