Donald Brian Roeser, also known by the stage name Buck Dharma (born November 12, 1947), is an Americanguitarist and songwriter, best known for being a member of Blue Öyster Cult since the group's formation in 1967. He wrote and sang the lead vocal on many of the band's best-known hits, including "(Don't Fear) The Reaper", "Godzilla", and "Burnin' for You" (the last originally intended for Roeser's solo album).