'Sensei' Brian Mac Mahon is a serial entrepreneur, investor and has owned companies in 35 countries. He is the founder of Expert DOJO - the largest international startup accelerator in SoCal. In 2018-19, 400 companies went through DOJO's programs, and 2,000 more are planned for this year. Expert DOJO has made 42 investments in the last 2 years, 25 more are expected in 2020.