Dr. Liesha Petrovich is the founder of Maine Kyokushin Karate and creator of the Triad Fusion Method™. With over 30 years of martial arts experience, Liesha has dedicated her life to teaching more than techniques — she teaches transformation.

Her journey began with a single, powerful moment: a shy girl standing up for herself. That spark ignited the All-Girl Karate Club, which grew into the All-Women’s Self-Defense Club and ultimately evolved into the Be Fierce Self-Defense nonprofit.

Beyond the dojo, Liesha is a mother, survivor, and advocate. From confronting systemic challenges in male-dominated spaces to navigating the realities of family addiction and personal loss, her resilience runs deep. Her life’s mission is clear: to help women and girls protect not just their bodies — but their voices, boundaries, and mental sanctuary.

Liesha holds a Doctorate in Business Administration and a Master’s in Higher Education, but her students know her simply as Sensei. Or, as she puts it:

“Doctor. Sensei. Liesha. Professor. I answer to them all.”