Duff McKagan is an American musician best known as the bassist for the rock band Guns N' Roses. Born on February 5, 1964, in Seattle, Washington, he played a key role in the band's rise to fame in the late 1980s and early 1990s, contributing to iconic albums like Appetite for Destruction. In addition to his work with Guns N' Roses, McKagan has been involved in various musical projects, including Velvet Revolver and his solo work. He is also an author and has written books about his life experiences, including his struggles with addiction and his journey in the music industry.