DB Rai “DB” started practicing Karate in year 1984 under great martial artist Pervez B Mistry Shihan-9th Dan in karate style of Okinawan Go-Ju Ryu, headed by Shihan Morio Higaonna-10th Dan. DB passed his 6th Dan grading exam under the world’s famous grading panel (Morio Higaonna Shihan-Okinawa, Bakkies Laubscher Shihan-South Africa, Kazuo Terauchi Shihan-Japan and Shihan Tetsuji Nakamura-Canada) in 2019, Okinawa. During his young age, he participated in many state & national karate championship in kata & kumite categories. He passed his 4th Dan black belt AIKF exam in year 2004. Afterwards, he left sport karate with Shihan Mistry and concentrated only on traditional karate. He still practices under the guidance of Shihan Pervez Mistry in his hombu dojo.
In year 2007, DB joined American School of Bombay (ASB) as Director-Security & Facilities. He came in contact with Sensei Brian Reverman-5th dan black belt in Aikido, who was running Aikido class in ASB. He started practicing Aikido under him. Sensei Brian Reverman left for Beijing in the year 2010. Being a senior student DB then took charge of the dojo. He is the first person from Mumbai who passed Aikikai black belt grading. Presently he is a 4th (Yon) Dan Aikikai Black Belt. Being the founding member of Aikido of Mumbai, DB runs classes and represents Aikido of Mumbai in National and International forums.
In addition to Aikido and Karate, DB has more than 40 years experience of physical security management and martial arts. During this time he has trained various government para-military forces, corporate security teams and private security agencies.