HRCA works exclusively with Highlands Ranch Taekwondo, led by 5th Degree Black Belt Master Myong Su (Mathew Cottingham). Master Myong Su has won numerous championships in sparring and forms. Also, he has MMA (mixed martial arts) training in Jujitsu, Judo, and Muay Thai and uses his multi-discipline background to provide students a broader range of training and skills, as he includes these various techniques into his Taekwondo teachings.