The Nonexistent Knight
Italo Calvino
 The Nonexistent Knight is set in the time of Charlemagne, and draws material from the literary cycle known as the Matter of France, referencing Ariosto's Orlando Furioso. Agilulf is a righteous, perfectionist, faithful and pious knight with only one shortcoming: he doesn't exist. Inside his empty armour is an echoing voice that reverberates through the metal. Nevertheless, he serves the army of a Christian king out of "goodwill and faith in the holy cause".