Leparcors, or leprechauns, are mythical creatures from Irish folklore typically depicted as small, bearded men dressed in green coats and hats. They are known for their mischievous nature and are often associated with hidden pots of gold at the end of rainbows. Leprechauns are said to be shoemakers by trade and possess magical powers, including the ability to grant three wishes to those who capture them. Overall, they embody themes of luck and trickery in Irish culture.