Demetrious Johnson
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About Demetrious Johnson
Demetrious “Mighty Mouse” Johnson is a retired American mixed martial artist, UFC and ONE Championship world champion, UFC Hall of Famer, content creator, gamer and entrepreneur. Johnson became the inaugural UFC Flyweight Champion in 2012 and went on to make 11 consecutive title defenses, establishing one of the most notable championship runs in UFC history. After moving to ONE Championship in 2018, he won the ONE Flyweight World Grand Prix and captured its flyweight title before retiring from MMA. In 2026, Johnson was inducted into the UFC Hall of Fame’s Modern Wing. Today, his digital platform extends well beyond fighting, combining combat sports, gaming, family, fitness, Brazilian jiu-jitsu, interviews and long-form entertainment. His MightyCast podcast and YouTube programming give him a direct media platform that allows him to work with athletes, creators, brands and entertainment properties
Past Campaigns
A globally recognized combat-sports personality with authentic athletic credibility, family-friendly content, gaming expertise and an established independent media platform. UFC — Former UFC Flyweight Champion and 2026 UFC Hall of Fame inductee. ONE Championship — Competed under the ONE banner, won its Flyweight World Grand Prix and became ONE Flyweight World Champion. HYPERFLY — Johnson was featured as the face of the ONE Championship x HYPERFLY collaboration. Microsoft Xbox — Johnson had a documented sponsorship relationship with Xbox during his UFC career and has maintained a long-standing connection to gaming. ONE Esports — Served as Chief Brand Ambassador for ONE Esports, connecting his MMA audience with competitive gaming. ORB Sport — Documented endorsement relationship involving fitness technology. Grüns — Current sponsored content relationship featuring the brand in Johnson's 2026 YouTube programming. PrizePicks — Current sponsorship integration across Johnson's YouTube and MightyCast 15-Time World MMA Champion G Fuel, PrizePicks, Jaxxon
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