The Ultimate Fighter is a reality television series that showcases mixed martial arts (MMA) fighters competing for a chance to earn a contract with the UFC (Ultimate Fighting Championship). The show features fighters living together in a house while training and competing in elimination matches. Each season typically focuses on a specific weight class, with coaches who are established UFC fighters mentoring the contestants. The series has been instrumental in popularizing MMA and has launched the careers of many fighters, making it a significant platform in the sport's history.