Ehren David

Ehren has lived everywhere from Everett, Washington to Tokyo, Japan, and is the head instructor of HBJJ managing the school's day-to-day operations. He holds a Black Belt in Brazilian Jiu-Jitsu from James "300" Foster (Foster BJJ in Kent WA), who also gave him his nickname, "Seminar Stalker".

Ehren has been training since 2010, teaching since 2012, refereeing since 2015, and is a We Defy Foundation Ambassador. Concurrently to Brazilian Jiu-Jitsu he developed skill-sets in both law enforcement, military, and women's self-defense curriculums, providing instruction in all three both at HBJJ as well as through workshops, seminars, and private instruction.

Ehren is mostly know for the notebook he carries as well as "Stalker", a guard passing system he continues to develop with his friends, training partners, and with notable foundational contributions from Cindy Hales and Orlando Sanchez.