INSTRUCTORS

Owner/Partner & Head Instructor

Jerel “Jerry” Hallert has trained Brazilian Jiu-Jitsu for 23 years and is a 3rd-degree black belt under world champion Marcos “Yemaso” Torregrosa. He has competed extensively at the black belt level, earning wins and podium finishes at major events including IBJJF, Fight 2 Win, Grapplers Quest, and NAGA. 

Jerry is internationally recognized for his work in police grappling and regularly instructs law enforcement officers from around the world. He is the founder of the LEO Defense Systems curriculum, currently taught to agencies across the United States. Jerry is an 18-year veteran of a local police department.

 Instructor

Aaron Gonzalez is a dedicated BJJ black belt and seasoned coach with a proven track record of transforming young athletes both on and off the mat. A standout high school wrestling coach, Coach G has guided teams to success while instilling discipline, resilience, and sportsmanship in his wrestlers. His own competitive journey includes numerous achievements in Jiu-Jitsu and wrestling, earning him recognition as a formidable competitor and respected technician in both arts. 

For the past 10 years, he has been passionately coaching wrestling and Brazilian Jiu-Jitsu, specializing in youth programs that blend the explosive takedowns of wrestling with the strategic ground game of BJJ. His teaching philosophy focuses on building confidence, fostering respect, developing problem-solving skills, and creating a fun, supportive environment where kids thrive. As a black belt instructor, Aaron brings world-class knowledge to every class, breaking down complex techniques into clear, age-appropriate lessons that help children progress safely and steadily. Whether your child is brand new to martial arts or looking to take their skills to the next level, they’ll train under a coach who truly understands how to unlock their potential.

 Instructor

Joey McKay is a Brazilian Jiu-Jitsu black belt and professional mixed martial artist who brings high-level competition experience and disciplined coaching to Yemaso Komainu.

Having competed in elite gi, no-gi, and MMA events, Joey understands performance under pressure. 

His coaching emphasizes relentless fundamentals, positional dominance, controlled aggression, and mental toughness.

At Yemaso Komainu, he develops athletes with structure, accountability, and purpose — forging both skill and character on the mats.

Iron sharpens iron.

 Instructor

 Michal Orzel brings over 30 years of martial arts experience to our academy. His journey began in Poland, where he started judo at just eight years old. Through years of hard work, he became a national junior champion and a member of the Polish National Judo Team, representing his country for many seasons. Michal also holds a master’s degree in physical education, giving him a strong foundation in teaching methodology and athletic development.
After moving to the United States, Michal expanded his training to Brazilian Jiu-Jitsu and Muay Thai, eventually stepping into the world of mixed martial arts and earning the WFC Championship belt.
He is currently a 3rd-degree black belt in Judo and a 2nd-degree black belt in Brazilian Jiu-Jitsu.

Michal has won multiple medals at IBJJF and NAGA events and continues to compete in the Masters divisions. For the past 15 years, he has coached both kids and adults, known for his technical knowledge, patient instruction, and ability to develop students of all skill levels.
Outside the gym, Michal serves as a Master Defensive Tactics Instructor for the Nevada Department of Corrections, where he trains officers in effective control and self-defense techniques.
Coach Michal is passionate about helping students grow—on and off the mats—and is committed to building a strong, safe, and supportive jiu-jitsu community. 

 Instructor

Phil Wilson is a Brazilian Jiu-Jitsu Black Belt and proven competitor who brings real fight experience to Yemaso Komainu. He has competed — and earned victories — on the Fight to Win stage and inside the MMA cage, demonstrating technical precision, composure, and finishing ability under pressure.

As a Black Belt, Phil teaches with depth and structure. His coaching emphasizes disciplined fundamentals, positional dominance, and controlled aggression. He develops athletes who are technically sharp, mentally resilient, and prepared to perform when it matters.

 Instructor

Jeremy started doing Jiujitsu in late 2012, when a few of members from Reno Fire Dept joined the LEO class two days a week. Jeremy fell in love with the sport and started training full time in 2014. Besides the self defense application of the sport, Jeremy feels that the mental resilience and the sense of community are the greatest attributes one can gain from learning the sport. Stop in for a free trial week and start developing the best version of your self.