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Meet Our World Class Instructors

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Quest Self-Defense Mark Sentoshi Russo Drawing a Sword

Mark S. Russo began his Martial Arts training at the age of eight. What began as a childhood fascination evolved into a lifetime passion. Master Mark Sentoshi Russo holds Black Belt teaching licenses in six martial disciplines, and at 9th degree Black Belt is the world's highest rank in his chosen art.

Helen Jotoshi Russo has spent over 28 years under the direct guidance of renowned senior Master Instructor Mark Sentoshi Russo, and is one of only five women in the world to earn the title of To-Shin Do Master instructor. At 6th degree black belt she is the highest ranking female Master Instructor in the world in her chosen art.

Helen Jotoshi Russo Drawing a Sword
Brodie Ryutoshi Mahon Portrait

Brodie Ryutoshi Mahon is the Chief Instructor at Quest Self-Defense. Mr. Mahon has been studying with Sentoshi and Jotoshi Russo for over 13 years and has achieved the rare rank of 4th degree black belt in the art.

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