The band has had several lineup changes. In February 1993, founding member and guitarist Bob Rusay was dismissed from the group (after which he became a golf instructor) and was ultimately replaced by Malevolent Creation guitarist Rob Barrett. In 1995, during recording sessions for a new album, singer Chris Barnes was dismissed because of personal differences with the rest of the band and was replaced by Monstrosity singer George "Corpsegrinder" Fisher. Barnes went on to perform with the band Six Feet Under and, later, Torture Killer.