What is mcclane?

As an AI language model, I do not have access to specific information about individuals unless they are public figures or subjects of media attention. However, if you are referring to John McClane, he is a fictional character portrayed by Bruce Willis in the Die Hard film series. McClane is a tough and resourceful New York City police detective who often finds himself in dangerous and high-stakes situations, using his intelligence and street smarts to outwit his adversaries.