Brett W. Gurewitz, nicknamed Mr. Brett, is the guitarist and a songwriter of Bad Religion. He is also the owner of the music label Epitaph Records and sister-labels ANTI-, Burning Heart Records, Fat Possum Records, and Hellcat Records.
He has produced albums for Bad Religion as well as Epitaph Records labelmates NOFX, Rancid, and Pennywise, among others. Gurewitz left Bad Religion after the 1983 release of the unpopular Into the Unknown album, but returned in 1986. He left again after the 1994 release of their highly acclaimed album Stranger Than Fiction and was replaced by Brian Baker. Gurewitz started a new band, Daredevils, but rejoined Bad Religion in 2001 before they recorded their 2002 comeback album The Process of Belief. He remains with the band today, but only occasionally joins them live, such as when they are performing near his hometown or for televised appearances.
During 2003, Gurewitz started a new band called Error together with Atticus Ross, Leopold Ross, and Greg Puciato, but has remained with Bad Religion for three more albums The Empire Strikes First (2004), New Maps of Hell (2007) and their as-yet-untitled fifteenth studio album, which is due for release in 2010.
In the past, Brett has engineered several albums using the pseudonym "The Legendary Starbolt".