These covers by Bill Sienkiewicz are a good chronology of his artistic development through the 80s and 90s. He's done only a handful of full interior art projects in his career (he's done a surprising amount of interior inks over other pencilers, however) but he's done countless covers it feels like. He started out as a pretty traditional Neal Adams disciple but then morphed into something a lot more avant-garde (at least for mainstream comics) over time. HIs covers are always arresting, often iconic, and definitely always him.

Benjamin Marra is the creator, writer, and artist of the comics NIGHT BUSINESS, AMERICAN BLOOD, and TERROR ASSAULTER: O.M.W.O.T. (One Man War On Terror), all published by Fantagraphics. Acclaimed writer Grant Morrison chose Marra as a collaborator on the first issue of the relaunched HEAVY METAL Magazine. Marra had two serialized webcomic series appear on adultswim.com. His most recent book is JESUSFREAK, written by Joe Casey and published by Image Comics. In 2016, he was named one of the Art Directors Club's Young Guns. He illustrated the cover of American Illustration 35. In 2017, he was nominated for a Grammy Award for his album art of Wayfaring Strangers: Acid Nightmare, a collection of obscure 1970s post-Age-of-Aquarius Heavy Metal.