The Marquis de Carabas is a fictional character from the fairy tale "Puss in Boots," which is attributed to Charles Perrault. He is portrayed as a wealthy nobleman who is clever and somewhat cunning. The character is introduced when Puss in Boots, a clever cat, helps him gain wealth and status through a series of clever tricks. In the story, the Marquis de Carabas is initially a poor miller's son, but with the help of Puss, he becomes a lord. The cat's schemes lead to the Marquis inheriting a fortune and marrying a princess, showcasing themes of cleverness and social mobility in fairy tales.