The captain of a ship on which, at the beginning of the novel, Dantes serves as first mate. Leclere dies of a fever while at sea, which many ways sets the plot of the novel in motion, in two ways. First, because his dying wish is for Dantes to deliver a letter to Elba (i.e. to the banished Napoleon). Second, because after Leclere's death it is Dantes who is named captain of the ship, and this excites the jealousy of those who eventually use the letter to frame and imprison Dantes.