Pepper J. Keenan (born May 8, 1967) is an American guitarist and vocalist, best known for his work with heavy metal bands Corrosion of Conformity and Down. He joined Corrosion of Conformity in 1989, but did not become the lead singer until the recording of Deliverance in 1994. In 1991, Keenan formed Down with Phil Anselmo of Pantera, Jimmy Bower of Eyehategod, and Kirk Windstein and Todd Strange of Crowbar.