Like Dr. Fate, the Spectre was a character who was too powerful for his own good. In this case, they made him essentially into a guardian ghost for one Percival Popp who liked to refer to himself as a Super Cop! Jerry Siegel made the change but then was drafted and Gardner Fox took over the series at perhaps its lowest ebb. It would be two decades later when Fox revived the character on a cosmic scale not seen again until the Marvel characters of the seventies!