For decades Don King was a driving force behind Muhammad Ali and George Foreman. He was the electric-haired, dynamite-voiced impresario introducing Larry Holmes and Mike Tyson. He gave boxing the Rumble in the Jungle and the Thrilla in Manila, spearheaded a heavyweight reunification series in the 1980s and milked every dollar out of a Tyson-worshipping public in the ’90s. No one understood the value of heavyweights like King; not coincidentally, no one made more money off them—in 2006, Forbes estimated that he’d taken in $1 billion off more than 600 bouts over 33 years and his personal worth was $350 million. As the legendary boxing promoter celebrates his 85th birthday on Aug. 20, 2016, we present SI's best photos of Don King.