Grandmaster Petermann is an Ninth Dan, he has been studying Jang Mu Won Hapkido for over 40 years and has been teaching for over 30. Grandmaster Petermann has a lifelong devotion to the art of Hapkido and a passion for teaching others about this style of self-defense.

He is committed to the development of each student. He was Grand Master Kim's first American Black belt and first American Master in the Jang Mu Won Hapkido Association. He is proud to serve as the President of the Jang Mu Won Hapkido Association.

In addition to teaching, Grandmaster Petermann conducts seminars for churches, corporations, private business, and schools. He has also written several articles and has appeared in all the major martial arts publications.

Master Han Woong Kim was born in Seoul, Korea and moved to the United States in 1988. He studied martial arts under his father, Grandmaster Chong Sung Kim, who was the founder of the Jang Mu Won Hapkido Association which was established in 1960.

At a young age, Master Kim made the life altering decision to dedicate his life to the practice of Hapkido and to assist his father in building and strengthening the Jang Mu Won Association. He also supplemented his ever growing knowledge and experience in martial art training by applying himself over a period of several years to achieving a Master of Science degree in Oriental Medicine from Dongguk University in 2001.

As co-founder of Jang Mu Won International and creator of numerous educational DVDs, Master Han Woong Kim is steadfastly proving this to be the case as he, with a handful of others, leads a vanguard of Hapkido practitioners into the 21st century.

Several major martial art publications and magazines have also taken notice of Master Kim's subtle yet profound influence on an ever increasing scale and have featured him and the art of Hapkido many times.

Master Kim currently runs the Alhambra Headquarters dojang, the South Pasadena dojang and the Pasadena dojang.

Master Kim will continue well into the future to make significant contributions to the global martial art community as Jang Mu Won Hapkido continues to grow in prominence.

Master Bouchereau received his first degree certificate in Hapkido in 1988 and received his sixth degree promotion to the Master level in 2008. He has been studying Jang Mu Won Hapkido exclusively under Grandmaster Kim since 1985 and has been teaching for over 29 years at the Alhambra Headquarters.

Master Bouchereau is also a doctor of Chiropractic. He has been practicing in the San Gabriel Valley since 1980. His office is located at 6456 York Blvd, Highland Park, CA. Master Bouchereau is the official chiropractor for the Jang Mu Won Hapkido Association. He serves on the judging committee for the black belt testing.

Master Bouchereau has a private pilot's license and frequently flies his Cessna T210 to Mexico on medical missions with other doctors and dentists to provide free health care to the native populations.