Sebastien Gueuble is a second degree black belt in Judo, and a first degree black belt in Yoseikan Budo, a Japanese martial art that combines strikes, throwing, and weapons. He was born in Paris, and started Judo when he was 11 years old. Sebastien fell in love with Judo immediately and trained himself every day, which led to him earning his black belt only five years later, when he was just 16 years old. Sebastien trained in Japan on a Judo internship, where he honed his skills and decided to teach when he returned home. He earned the honor of being selected to be a sparring partner of the French Judo team and helped prepare the athletes for the 2000 Olympic Games in Sydney.

Sebastien has also trained in Savate, Kickboxing, Muay Thai, and Krav Maga. He came to the United States in 2007 to train with Guro Dan Inosanto, and has since received his instructorship in Jun Fan Jeet Kune Do, in Filipino Martial Arts, and is also one of five students to earn a Level 5, the highest level to attain, under The Way of No Way. He also currently holds a blue belt in Brazilian Jiu Jitsu.

Practicing martial arts is a huge chess game to Sebastien, he loves the different "battle fields," such as standing, ground fighting, weapons, etc., and the endless opportunities for each. It is important to know how to defend yourself, and to be more confident. Martial arts has changed Sebastien's life forever by facilitating self discovery. He believes everyone gains health, wellness, strength, and self control from the martial arts, but most importantly, everyone will learn things about themselves that they never knew.

"The most sensational thing is when you train with someone that you don't even know. In just one hour, you will learn so much: if he is brave, if he gives up easily, if he is smart, if he is a cheater. Because during a sparring session, you can't lie about yourself."