Greg Castro is a Certified Brazilian Jiu-Jitsu Brown Belt Instructor under 4th Degree Black Belt Professor Roy Dean, a globally respected martial artist, educator, and founder of the Roy Dean Academy. Professor Dean is internationally recognized for his technical precision, structured teaching methodology, and decades of experience across multiple martial arts disciplines, including Brazilian Jiu-Jitsu, Judo, Aikido, and Japanese Jujutsu. His instructional systems are studied by practitioners worldwide and are known for producing highly technical, disciplined martial artists.

As a certified instructor within this lineage, Greg teaches Jiu-Jitsu through a principle-based, detail-oriented approach that prioritizes technical excellence over shortcuts and trends. His coaching reflects the same standards of structure, clarity, and timeless fundamentals emphasized in the Roy Dean Academy — ensuring students receive authentic, high-level instruction rooted in true martial arts tradition rather than watered-down commercial training.

With years of dedication to the art and leadership on the mats, Greg has cultivated a training environment that blends elite-level Jiu-Jitsu with a Christ-centered culture of discipline, humility, and brotherhood. His mission is not just to teach techniques, but to develop resilient individuals who grow in confidence, character, and purpose through consistent training.

At Grappling Disciples Jiu-Jitsu, students are guided through a system designed for long-term mastery, personal growth, and real skill development — all under the leadership of a certified instructor connected to one of the most respected educational lineages in modern Brazilian Jiu-Jitsu.

This academy is built for those seeking more than a workout — it is for those committed to excellence, faith, and the lifelong path of Jiu-Jitsu.