Bellator MMA (formerly known as "Bellator Fighting Championships") is an American mixed martial arts promotion, and the following is a history of its champions in each weight class. At the time of its inception in 2008, CEO Bjorn Rebney founded Bellator Fighting Championships as a tournament based organization. The inaugural champion for each weight class was determined by the winner of an eight-man tournament. All subsequent title challengers were required to first win an eight-man tournament in a specific weight class in order to earn the right to challenge that division's reigning champion. Dethroned champions were required to re-enter the tournaments in order to attempt to regain their title. Under Bjorn Rebney's sole leadership, Bellator MMA would strictly adhere to these rules during