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 about Welles—"Cartoonist, Actor, Poet and only 10"—in the February 19, 1926, issue of "The Capital Times". The article falsely states that he was descended from "Gideon Welles, who was a member of President Lincoln's cabinet". As presented by Charles Higham in a genealogical chart that introduces his 1985 biography of Welles, Orson Welles's father was Richard Head Welles (born Wells), son of Richard Jones Wells, son of Henry Hill Wells (who had an uncle named Gideon "Wells"), son of William Hill Wells, son of Richard Wells (1734–1801). Peter Noble's 1956 biography describes Welles as "a magnificent figure of a man,