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. With succeeding being an excellent private at the police, the captain promoted him into rank of police detective.
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.