John Frankl is the founder of Brazilian Jiu Jitsu in Korea. John trained another eight years with Roberto Maia, founder of Boston Brazilian Jiu Jitsu, an original Gracie Barra black belt under Carlos Gracie, Jr., and the cousin of Renzo Gracie and the Machado Brothers. Under Roberto, John received his purple, brown, and black belts. In Boston, he studied and taught at the Gracie Barra Academy, Boston Brazilian Jiu Jitsu. He served not only as a Jiu Jitsu instructor but also as head instructor and coach of the Vale Tudo team. He also competed in and won both Sport Jiu Jitsu and Mixed Martial Arts contests. John is also certified as a Full Instructor with the Straighblast Gym International and serves as their Regional Director for East Asia.