 His work consists primarily of barely clothed or nude Bettie Page-style 1950s soft pornography and B-movie monsters, with the female characters often taking the role of "Devil-Women".The image most often associated with his work however is the face of a grinning devil with a smoking cigar clamped in its teeth.Coop has become popular with certain bands and labels and has provided art for several Sympathy for the Record Industry releases as well as the posters for The Reverend Horton Heat, Lords of Acid, MxPx, Green Day, Nirvana, Soundgarden and Foo Fighters.