Jonas Bieri currently holds a 1st Dan Black Belt in Shotokan Karate. He has been training Karate and Goshindo Jiu Jitsu for five years, and still loves to find new aspects of the arts to dive in, explore, optimize and teach to his students. He is also a senior web and database developer, and lives with his wife and two kids in Basel, Switzerland.

Nathan Douglas holds a 3rd dan Kukkiwon black belt. He has been training in Taekwondo since 1998, he also holds a black chevron in Ultimate Bo. Nathan has been a martial arts teacher since 2012- teaching taekwondo and bojutsu in a local academy. Nathan lives with his wife Sarah and kids Tailynn and Jake in Moose Jaw, Saskatchewan, Canada.

Ismail Rico has trained in Taekwondo for most of his life, and has instructed professionally for the last 8 years. He holds a 4th dan certified Kukkiwon black belt in TKD.

Michael Hodge is the founder of the weapons style Ultimate Bo. Michael has been studying the martial arts since age seven and has earned a 3rd degree black belt in shotokan karate and song moo kwan. He has taught thousands of classes as an instructor in his own dojo, and his father’s dojo in the last 10 years, and now currently works with his home study students from around the globe. His goal is to help others reach their full potential.

Jon Hodge currently holds the rank of 6th dan black belt in shotokan karate and song moo kwan. He has taught martial arts for nearly 20 years. Over the years Master Hodge has studied many different forms of martial arts and is also a Master Chi Kung and Tai Chi instructor. Master Hodge is well known as a teacher of self defense, self discipline, and most importantly to him – self improvement.

Dustin Koppel has been involved in the martial arts for more than a decade now, and teaching for 8 years. He began with Krav Maga and Muay Thai Kickboxing. Two years later he got involved with Brazilian Jiu Jitsu. As a competitor, he has won kickboxing championships in the light and super heavyweight categories. Currently, he runs a top martial arts school in Tennessee, along with training his global Krav Maga distance training students

Michael South is a black belt Krav Maga instructor and has been a student of the martial arts for over ten years. He also holds black belts in Tae Kwon Do and Hapkido. He began teaching martial arts professionally eight years ago and is the founder of National Martial Arts, an Oklahoma-based martial arts organization dedicated to making the world a better and safer place. He specializes in Krav Maga instruction and is an avid student of BJJ at the moment, as well as a competitor.

Sarah has a black belt in Shotokan Karate and is also an active student of Ultimate Bo. She is also a NASM Certified Personal Trainer and Youth Exercise Specialist. Sarah is a mother of five who loves spending time with her family, training in the martial arts, running, weight lifting, travel, and adventure in general.

Since 2003, Coach Nick Vasallo has trained in Aikido, Karate, Taekwondo, Kickboxing, Jiu Jitsu, Muay Thai, and Krav Maga. He has won tournament medals and has competed in amateur bouts. Coach Nick practices Jiu Jitsu and is the head instructor of Muay Thai at Danville Jiu Jitsu, Wrestling, and Kickboxing. He is a CMAT (Certified Martial Arts Teacher) and the creator of the Global Martial Arts University's Muay Thai program. Coach Nick is sponsored by and an affiliate of Zebra Athletics, Iron Neck, RXT-1, DoubleUP Roller, and Punch King. He's also a college professor of music, married with two kids, composes/sings/plays guitar in two bands (Antagony and Oblivion), and owns WeNeedMerch.com - a custom apparel company.

Weston has a lifelong passion for health and movement, he has earned his Bachelor's and Master's degree in kinesiology (the study of human movement) and is currently workout on his PhD. While not filming Combat Strong Weston is a professor at a local collage and coaches group fitness classes. He spends his free time finding new events or races to challenge his body and mind. Weston truly likes helping people learn and reach their goals.  

Seth Sullivan is a 3rd Dan blackbelt in Shotokan Karate. He has been training in Shotokan for over 15 years. He is a family man, married, and with children and has been in Christian ministry for over 14 years. His attitude is that no matter our belt level or years experience, we are all still students. He encourages all students to ask questions, to continue to train, and to always remember to enjoy the journey of becoming a great martial artist!