Arthur de Richemont, known as Constable Richemont was a French nobleman and veteran soldier in the Hundred Years' War. Later in his life, he became Duke of Brittany. In Age of Empires II, he is a cavalry hero. He appears in the final scenario of the Joan of Arc campaign, A Perfect Martyr, and is also available in the Scenario Editor. Constable Richemont has the appearance similar to a Knight with a lance, similar to several other hero units.