Best known for characters like his parodic 1980s American Flagg, Marvel’s Dominic Fortune, and DC’s revisionist Blackhawk — not to mention his controversial, X-rated Black Kiss and the first 10 issues of Marvel’s crowd-pleasing Star Wars series — writer-artist Howard Chaykin has prodded mainstream comics in challenging directions for more than 50 years, throwing pulp heroes and retro-science fiction into a postmodern blender with generous helpings of politics, sex, and satire.