Grand Master Mattocks holds Black Belts in three styles, and is a 10th Degree Black Belt in Kempo. He holds a position on the Mei Hua Quan Association Grand Master's Council. He is trained in armed self-defense, street tactics, and holds a World Champion Title AKKK. His duties as Head of the Board of Directors for United Kempo Karate Systems, formerly American Kempo Kombat Karate, includes overseeing the testing of Black Belts at several Associate Schools on the east coast and mid-west. These schools teach the curriculum under United Kempo Karate Systems.