Germany, the land of Goethe, Thomas Mann and Beethoven, has an unlikely pop culture hero: Donald Duck. Just as the French are obsessed with Jerry Lewis, the Germans see a richness and complexity to the Disney comic that isn’t always immediately evident to people in the cartoon duck’s homeland.

Comics featuring Donald are available at most German newsstands and the national weekly “Micky Maus”—which features the titular mouse, Goofy and, most prominently, Donald Duck—sells an average of 250,000 copies each week, outselling...