Renshi Kevin has trained under Hanshi Eihachi Ota (10th Degree).
Hanshi Ota is the President, Shorin-Ryu Karate and Kobudo Association (SKKA) and Okinawan Budokai.
Renshi Kevin has trained under Grandmaster Dr. Sang Kee Paik (10th Degree).
Dr. Paik was a Sourth Korean martial arts grandmaster and creator of a Kwon Bup system he called Sa-Sang Kwan (Korean for "school of the four natural elements: air, earth, fire, and water").
He was one of the few people in the world who was granted 10th-degree black belt status.
Yahagi Kunikazu, the second headmaster (soke) of Ryushin Shouchi Ryu (Japanese sword).
Yahagi was licensed by the International Martial Arts Federation (IMAF) as a Kobudo Hanshi (8th degree) and later succeeded in becoming a director for the IMAF.