Introduced in 1971’s Green Lantern (Vol. 2) #87 by co-creators Dennis O’Neil and Neal Adams, John Stewart was the first Black Green Lantern. After Hal Jordan’s successor, Guy Gardner ...
He once was cast opposite Mahershala Ali in Marvel Studios ... as he reluctantly mentors Stewart, a younger Green Lantern. The two intergalactic cops get drawn into a dark, Earth-based mystery ...