In 1938, National launched "Action Comics", which featured the brand new character from regular contributors Jerry Siegel and Joe Shuster, Superman. Originally dismissed as "silly" by editorial, reports soon came back noting the popularity and sales increase resulting from the Superman feature. Superman quickly became a sensation and before long, dozens of imitations from both National and other publishing houses appeared almost overnight. Writer Bill Finger and his artist employer Bob Kane soon submitted Batman to appear in "Detective Comics" and before long, an entire Justice Society of America had been formed including properties such as The Flash, Green Lantern, The Sandman, Wonder Woman, Hawkman and The Spectre, to name a few, many of whom were either created or written by the prolific Gardner Fox.