Leporello is a character from the opera Don Giovanni, composed by Wolfgang Amadeus Mozart. He serves as the servant to the main character, Don Giovanni, and is known for his witty and clever personality. Leporello often provides comic relief and commentary on the actions of his master, highlighting the contrast between their social statuses. In the opera, Leporello is famous for his "Catalog Aria," where he lists the numerous women that Don Giovanni has seduced. His role emphasizes themes of loyalty, morality, and the consequences of hedonism, making him a crucial part of the story's narrative.