Ryan DuWayne Bader is an American mixed martial artist currently signed to Bellator MMA where he is the current Bellator Heavyweight Champion in a continuous streak that is the longest of any Bellator Champion. He is also the former Bellator Light Heavyweight Champion, and the winner of the 2018 Bellator Heavyweight World Grand Prix Tournament. At Bellator 214, Bader became the first fighter in Bellator history to become champion in two weight divisions simultaneously. Prior to signing with Bellator, Bader competed for the Ultimate Fighting Championship (UFC) in the Light Heavyweight division and he was a cast member and winner of The Ultimate Fighter: Team Nogueira vs. Team Mir.

The Ultimate Fighter: Team Nogueira vs. Team Mir is the eighth installment of the Ultimate Fighting Championship (UFC) produced reality television series The Ultimate Fighter, which went into production in late May 2008 and premiered on September 17, 2008 on Spike TV. This season features Light Heavyweight fighters (186–205 lb) and Lightweight fighters (146–155 lb).