John McClane, Sr. (born May 23, 1955) is an Irish American detective lieutenant with the New York City Police Department and the main protagonist of the Die Hard film series. He is portrayed by Bruce Willis. He also briefly worked for the Los Angeles Police Department.
He has been a police officer since 1977. He is separated from his wife, Holly Gennero McClane, who is using her maiden name. Holly moved to Los Angeles several months earlier to pursue a career that John ultimately thought would fail, leading to their separation. Together, they have two children, Lucy and John Jr.