Bill was born in the United States, and served in the Vietnam War, where he got the nickname Wild Bill. After the war he continued to serve in the U.S. military, until the 1980's, when he finally retired, and returned home, living in rural areas of the U.S. He was always bored at home, and looked for something to do. He decided to move to eastern Europe, primarily to be alone and to hunt, which is precisely what he still does in the apocalypse. He wanders the far north regions of Chernarus, mostly around Stary Yar, Kamensk, and Krasnoe.