Demetrious Johnson is a professional mixed martial artist known for his exceptional skills and versatility in the sport. Born on August 13, 1986, in Madisonville, Kentucky, he has competed in various weight classes, primarily in the flyweight division. Johnson gained fame for his time in the UFC, where he became the first-ever UFC Flyweight Champion and successfully defended his title a record 11 times. After his successful run in the UFC, Johnson signed with ONE Championship, a major MMA organization based in Asia. He continues to compete at a high level, showcasing his talent and sportsmanship. Johnson is widely regarded as one of the greatest mixed martial artists of all time.