Joe Strummer was the lead singer and rhythm guitarist of the seminal British punk rock band The Clash. Strummer passed away in real life on 22 December 2002, aged 50, of an undiagnosed congenital heart defect.
Joe Strummer voiced himself in the episode "Chef Aid", in which he played a song at the benefit concert for Chef. Strummer performed the song "It's a Rockin' World" on Chef Aid: The South Park Album. He also appeared in the accompanying mockumentary, Chef Aid: Behind the Menu, in which he talked about Chef's influence on his career.
On South Park, Strummer appears as a relatively faithful representation of his real-life self, dressed in a sleeveless black shirt and blue jeans. He is seen playing the acoustic guitar in the episode.