Marc Moor is an enigma; he is mild mannered and quietly spoken, and only five foot six tall, yet he has dedicated his life to the understanding of the warrior spirit. Most of his working life has been devoted to the awareness of violence, and the potential of violence. Marc Moor has a unique and most valuable perspective on the practicality of martial arts, and their service to the principles and strategies of self protection and self defence. He has continually studied Japanese martial arts since his early childhood and has worked as doorman in some of the toughest pubs and clubs in the UK, as well as holding the position of personal bodyguard to one of the world's wealthiest men. All this adds up to a unique and individual understanding of the martial arts, something that is appreciated across the world when and wherever he teaches.
 

Marc Moor was awarded the rank of Dai Shihan directly from Dr Masaaki Hatsumi Sōke, at the Bujinkan Hombu Dojo, Noda-Shi, Japan. For those Shihan who have attained the five additional levels, the Japanese character Dai is used, and in this context it translates as "in place of." Those titled Dai Shihan are instructors who teach in place of Hatsumi Sōke, for reasons such as incapacity due to injuries or illnesses.