Peter Martin Christopherson (also known as Sleazy, 27 February 1955 – 25 November 2010) was a musician, video director, commercial artist, designer and photographer, and former member of British design agency Hipgnosis.He was one of the original members of the Industrial Records band Throbbing Gristle (TG). After the disbandment of Throbbing Gristle, he participated in the formation of Psychic TV along with Genesis P-Orridge and Geoff Rushton—Rushton later changed his name to John Balance.