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 on an idea by Orson Welles". Welles spent around nine months around 1947–48 co-writing the screenplay for "Cyrano de Bergerac" along with Ben Hecht, a project Welles was assigned to direct for Alexander Korda. He began scouting for locations in Europe whilst filming "Black Magic", but Korda was short of money, so sold the rights to Columbia pictures, who eventually dismissed Welles from the project, and then sold the rights to United Artists, who in turn made a film version in 1950, which was not based on Welles's script. After Welles's elaborate musical stage version of this Jules Verne novel,