Sensei Jason Kratz is the head instructor of the Saint Louis Bujinkan Dojo. He began martial arts in 1988 and is a student of Shihan Luke Molitor. In 2008 he received the rank of 5th dan while training in Japan under Masaaki Hatsumi. Over the years Sensei Kratz has enjoyed expanding his knowledge to include martial arts of the Philippines, Korea, Thailand, Brazil, China and Japan.