Meet Bobby Calvert AKA Ninja Bob
Bobby Calvert — The Original Nashville Ninja
Who is Bobby Calvert aka "Ninja Bob"?
Bobby Calvert, widely known as "Ninja Bob," is a Nashville-based martial artist, fitness coach, and entrepreneur who has established a prominent presence across athletic, instructional, and commercial ventures in Middle Tennessee.
Martial Arts & Survivalism
In 2005, Calvert founded the martial arts style Kurosasori-ryū Gendai Ninpō—a name translating to "Black Scorpion Style Modern Ninja Way" (Kurosasori meaning "Black Scorpion," Ryū meaning "School or Style," Gendai meaning "Modern," and Ninpō meaning "Ninja Way or Art"). Drawing from his lifelong background in Ninjutsu, Muay Thai, Judo, and Boxing, he developed this contemporary system to integrate traditional martial techniques with modern practical self-defense, as well as wilderness and urban survival strategies. He founded and leads the Black Scorpion Ninjutsu Society and oversees an academy and regional ranking system based in Tennessee.
Fitness Coaching
As a certified personal trainer, Calvert operates Ninja Bob's Fitness, offering customized conditioning, movement, and physical training services throughout the Middle Tennessee area.
Collectibles & Antiques
Extending his entrepreneurial pursuits into antiques and trade, Calvert owns and operates Bob's Coins & Collectibles. Operating out of the Higgins Woodbury Flea Market, the business specializes in numismatics, sports memorabilia, and popular trading card games, including Pokémon, Magic: The Gathering, and Yu-Gi-Oh.
A Deep Passion For Teaching Martial Arts
Bobby Calvert approaches martial arts with deep passion and an unwavering dedication to the craft. A lifelong practitioner and instructor, Bobby is driven by a genuine love for teaching and sharing his knowledge with others. He is particularly dedicated to students who take their training seriously, taking pride in guiding committed individuals through rigorous practice, skill development, and personal growth.
Bobby Calvert aka Ninja Bob - The Original Nashville Ninja
A Legacy of Empowerment & Impact
Martial arts at its highest level transcends the walls of a gym—it becomes a catalyst for human empowerment, safety, and personal transformation. For decades, Bobby Calvert, widely known as "Ninja Bob," has dedicated his life to teaching martial arts not just as a martial discipline, but as a vital tool for community resilience.
Based in Nashville, Tennessee, Bobby has built a unique legacy by breaking down the traditional boundaries of martial arts instruction. His training philosophy is rooted in a powerful truth: real self-defense and martial arts belong to anyone seeking strength, safety, or purpose.
Throughout his career, Bobby has adapted his elite technical expertise to uplift a remarkably diverse cross-section of society:
Elite Competitors: Preparing full-contact fighters with the grueling physical conditioning, tactical strategy, and mental fortitude required for high-stakes combat.
Surviving to Thriving: Empowering women who are survivors of domestic violence by teaching practical, trauma-informed self-defense designed to reclaim personal safety and autonomy.
Youth Mentorship: Guiding teenagers through martial arts to build foundational life skills, instilling deep self-esteem, mutual respect, discipline, and accountability.
Community Advocacy: Extending a hand to Nashville’s most vulnerable populations by volunteering his time to teach essential self-defense and survival skills to the homeless community.
Whether training an athlete for a championship bout or giving a vulnerable individual the tools to survive on the streets, Bobby "Ninja Bob" Calvert’s mission remains the same: to build strength, foster respect, and protect the human spirit.
Who Says Nashville Is Just for Country Music?
Traditional and Modern Ninjutsu, Practical Fighting Skills, and Real-World Self-Defense Training Accessible to Students in Nashville and Middle Tennessee.
Bobby Calvert — The Original Nashville Ninja
Building strength beyond the physical:" "For Ninja Bob, teaching martial arts and self defense in Nashville isn't just about movement—it's a passionate mission to build confidence, discipline, and practical capability in every student.
