John Morton
From superman.nu: Supermanica
The leader of a gang of criminals, who, posing as a scientist, announces that he has invented a "new petryifying gas that turns living flesh to solid stone" as part of an elaborate scheme to extort $1,000,000 from the city of Metropolis by threatening to turn its citizens into lifelike stone statues. Superman exposes the gas as fraudulent and apprehends the criminals in August 1949 (Act No.135: "The Case of the Human Statues!")
