Action Comics character included X-ray vision in issue #18 (November 1939) and telescopic vision and super-breath in issue #20 (January 1940). Luthor, a villain who would later become Superman's archenemy, was introduced in issue #23 (April 1940). The original Toyman was created by writer Don Cameron and artist Ed Dobrotka in issue #64 (September 1943). By 1942, artist Wayne Boring, who had previously been one of Shuster's assistants, had become a major artist on Superman. Under editor Mort Weisinger, the "Action Comics" title saw a further expansion of the Superman mythology. Writer Jerry Coleman and Wayne Boring created the Fortress of Solitude
Action Comics on the title with issue #19, where unlike the previous issues, the setting for the "Action Comics" series would now take place in the present. Diggle announced his resignation as the writer of the series shortly before his first issue went on sale. Diggle left the title with only one issue completed (he would be co-writer for #20 and co-plot issue #21), with Daniel taking on full scripting and art duties for the two following issues completing the three part story arc "Hybrid". Scott Lobdell wrote the series after Diggle and Daniel's departure. Writer Greg Pak and artist Aaron Kuder