meet john “doomsday” howard

John “Doomsday” Howard is a professional MMA fighter, 3rd degree black belt in Brazilian Jiu-Jitsu, and founder of Doomsday Defense Dojo. With a career spanning over two decades across the UFC, PFL, and international promotions, John has earned a reputation for his explosive fighting style, relentless work ethic,
and unmatched heart inside and outside the cage.

Born and raised in Boston’s Dorchester neighborhood, John has become a nationally recognized athlete and advocate for neurodivergent communities after being diagnosed with autism at age 33. Today, he channels his passion for fighting and community into empowering others — one class, one story, one comeback at a time.