Mark Riddick is an American illustrator and graphic artist, who creates detailed ink illustrations for Death and Black Metal bands. His decaying bodies, rotting flesh, and dark themed imagery have a distinct visual appeal. Riddick has created a wide array of print and album art for Autopsy, Devourment, Dying Fetus, and Suffocation among other metal groups. Well known since 1991 in the metal community Riddick's often grotesque but stylized art has a draw that reaches into apparel and graphic design.
An interview with the artist http://metalbandart.com/?p=180 and http://www.invisibleoranges.com/festering-in-his-shroud-an-interview-with-artist-mark-riddick/