Meet Our Instructors!

Ryan Cheng

Lead Instructor

Mark Simmerman

Instructor

Neroli Li

Instructor

Bobby Hall

Instructor

Bruno Medeiros

Instructor

Other Black belts

Ryan Cheng

lEAD INSTRUCTOR

Ryan has been training and teaching Brazilian Jiu-Jitsu for over 15 years. He was a passionate competitor and often participated in international tournaments. Ryan won a Gold medal in the North America Open in 2014, and Gold (2016) and Silver (2018) Medals in the Asian Open Championship. As a fighter of smaller body size, Ryan knows how to apply techniques to counter the weight and power of larger opponents. Ryan has been teaching and sharing BJJ knowledge since his days as a blue belt. He is also a yoga practitioner and incorporate his understanding of yoga into his BJJ training and teaching. Ryan’s teaching emphasizes body mechanics, injury prevention, strategies and tactics of Jiu-Jitsu, and the precise application of technique. His approach to teaching gives students an accelerated, deeper and more comprehensive understanding of this complex grappling sport. Ryan earned his black belt under Japanese Master Makoto Aramaki.

Mark Simmerman

Instructor

Mark started grappling 20 years ago at age 38. From his first class, he fell in love with Brazilian Jiu Jitsu and submission grappling and has been training, competing and teaching ever since. Mark is a black belt that provides easy to understand instruction with special attention to the small details that can make big differences. He has a special interest in teaching athletes who are older, need to lose weight, lack confidence, or who have a chronic injury or disability. He also loves to train hard with the younger competitive athletes. Brazilian Jiu Jitsu has kept Mark fit, flexible and having fun all these years and can do the same for you!

Neroli Li

Instructor

Neroli is currently a brown belt. She started to practice BJJ as she wanted to learn some self-defence techniques. She believes that BJJ is a great combat sport to develop physical fitness and personal resilience. As a certified yoga teacher, Neroli believes that yoga is a perfect complement to Jiu Jitsu, and that it is important to prioritize injury prevention instead of just reacting when physical signs like pain and stiffness are present. Yoga increases the flexibility of the body, improves coordination, and helps us to execute movements in a more healthy and efficient way.  Apart from the physical benefits, the practice of purposeful breathing and awareness of body and mental status contribute to improved performance in Brazilian Jiu Jitsu. Neroli’s instruction is precise and playful.

Bobby Hall

Instructor

Bobby became a Black Belt in his native UK under coach Louis Corazza and the Head of ZR Team UK Alain Pozo. He has a keen interest in experimentation and the evolution of the techniques of Brazilian Jiu-Jitsu and loves to share his love and knowledge of the sport.

Previous to BJJ Bobby had trained in Karate, Bodybuilding, and long distance running but it was when he began traveling, living and working in different countries that he discovered Brazilian Jiu Jitsu which became his obsession, with him training and competing around the world.

Bruno Medeiros

Instructor

Bruno is a skillful Brazilian black belt. He currently trains under Pure Grappling. Born and raised in Rio de Janeiro in Brazil, Bruno discovered his passion for Brazilian Jiu-Jitsu at a young age. He began his journey under the guidance of Ismael Souza (Fada Jiu-Jitsu), dedicating four formative years to refining his fundamentals and embracing the sport’s time-honored traditions. As he progressed to the blue belt level, I transitioned to the renowned Gracie Humaitá team, where his technique and understanding of the art continued to evolve alongside some of the most respected instructors in the world. Upon receiving his black belt, Bruno found a new home at GFTeam Recreio. There, he began to shape a teaching style that blends a rock-solid “old school” foundation with innovative and modern strategies. In particular, he developed a reputation for his highly effective guard work, as well as the emphasis on leglocks. This fusion of traditional fundamentals and cutting-edge techniques has allowed him to consistently produce students who are both all-rounded and competition-ready. Today, as an instructor, Bruno’s goal is to share the depth of his experience and provide an environment where students can explore, improve, and ultimately find their own path in Jiu-Jitsu. Whether you’re a seasoned competitor or a beginner taking your very first class, he is committed to helping you to gain confidence, hone your skills, and embrace the art in all its complexity and beauty.

Keith Fox

Black belt

Keith received his black belt in 2019 from professor Jorge Santose who is a  4th degree black belt in BJJ Dublin. He competed in Europe championships twice receiving bronze and silver medals. He also won gold in Irish championship 2016. Now Keith trains under team Pure Grappling with Ryan and Mark. He always says, “We roll with soul, Osss!”

Mehran Kama

Black belt

Mehran is a Jean Jacques Machado Black belt and has been training BJJ for over 15 years. He loves Jiu-Jitsu as it’s physically and mentally engaging on many levels. Now living the good life in Thailand, he’s happy he has great places to train like Pure Grappling Chiang Mai.   🙂

Steven Byrne

Black belt

Having started BJJ training in 2011 under Darragh O Conaill (the founder and head coach of East coast Jiu-Jitsu Acadamey Ireland), Steven received his black belt from Darragh in 2023.