Click on the quote for more info from a nice DC site
Glorious Godfrey arrived on Earth and assumed the human guise of G. Gordon Godfrey. Using his powers of mental persuasion, he insinuated himself into the public consciousness as a civil rights advocate. Godfrey's rhetoric encouraged self-reliance, claiming that mankind's dependency upon super-heroes had made them weak. His influence quickly spread across the nation, and before long, large portions of the country's population began to violently rebel against the super-hero community.
There are at least 30 crossover issues from Flash, Wonder Woman, Batman, Detective, Green Lantern, Cosmic Boy, Justice League, Firestorm, Blue Beetle, Warlord, Superman and more. These are not included here. Sorry