War of the Coprophages featured insect-like robots designed by roboticist and author Rodney Brooks. Morgan was also inspired by Orson Welles's 1938 radio broadcast of H.G. Wells's book "The War of the Worlds" (which had caused mass hysteria), with the episode's title being a direct reference to the novel (with the last part of the episode's title, "coprophages", referring to a dung eater). The town featured in this episode also takes place in—Miller's Grove—is a play on Grover's Mill, the setting of Orson Welles's 1938 radio adaptation. Originally, a scene featuring the sheriff discussing a noted case of hysteria from the 1930s was planned
Orson Welles process, Welles fostered the impression of self-adulation that was to haunt his career to his dying day", wrote critic Andrew Sarris. "For the most part, however, Welles was singularly generous to the other members of his cast and inspired loyalty from them above and beyond the call of professionalism." That September, Mutual chose Welles to play Lamont Cranston, also known as "The Shadow". He performed the role anonymously through mid-September 1938. After the theatrical successes of the Mercury Theatre, CBS Radio invited Orson Welles to create a summer show for 13 weeks. The series began July 11, 1938, initially titled