Leprechauns are mythical creatures from Irish folklore, often depicted as small, bearded men wearing green coats and buckled shoes. They are known for their mischievous nature and are often associated with rainbows and pots of gold. According to legend, they are solitary fairies who spend their time making and mending shoes. In stories, leprechauns are said to guard hidden treasures, and if captured, they may grant three wishes in exchange for their freedom. They are commonly featured in St. Patrick's Day celebrations and are symbols of Irish culture and mythology.