Master Gary Deaver began his martial arts training in Kajukenbo Karate in 1985, under the instruction of Senior Grandmaster Joseph Halbuna.  He received his Black Belt in Kajukenbo under Professor Bob Maschmeier in 1990. Master Deaver continued training in Kajukenbo while pursuing other arts as well.  In 1991 began training in Kodenkan Danzan Ryu Jujitsu under the instruction of Professor Willy Cahill.  He received his Shodan in 1994 and his Nidan in 1999.  Additionally, he is currently training in Sil Lum Fut Ga and Tai Chi.

Shortly after receiving his Black Belt, Master Deaver founded Coast Karate Studio East Bay, which he teaches along with the help of his son, Jared Deaver.  In addition to his activities at the school Master Deaver teaches Women's Self Defense courses for various organizations which includes churches, schools, hospitals, professional offices, and medical organizations.

Master currently holds the rank of 5th Degree Black Belt in Kajukenbo Karate, and Nidan in Kodenkan Danzan Ryu Jujitsu, and continues to promote both arts in his school in Pinole, California.