Rickson Gracie is a legendary Brazilian Jiu-Jitsu martial artist and professional fighter who, despite being one of the most successful and decorated grapplers of all time, never competed in the UFC. It is believed that Rickson’s decision not to fight in the UFC is largely due to his belief that the organization’s rules and regulations would limit the amount of techniques he could use, as well as the potential for illegal and dangerous tactics. Additionally, Rickson is known for using his skills to teach and inspire, rather than to compete and hurt opponents, which further dissuades him from competing in the UFC.