Mike Hauley was a former marine who became an hired assassin after he came back from Vietnam.
Mike Hauley enlisted in the marines at the age of 19, in 1965, and was able to become a Sergeant, a rank he held until 1974.
He has a wife and two kids living in Evanston, Illinois.
Mike agreed to be part of Mark Christanson's private army because it would allow him to make some money and get revenge after the politicians who sent him to Vietnam.
The Punisher prevents him from shooting a politician and he is killed by the organization he works for while being interrogated by former marine colleague Frank Castle.