Brian Azzarello has been writing comics professionally since the mid-1990s. He is the author of Johnny Double, Batman- Broken City and the Harvey and Eisner Award-winning 100 Bullets, all created in collaboration with artist Eduardo Risso. The New York Times bestselling author's other work for DC includes the titles Hellblazer and Loveless (both with Marcelo Frusin), Batman- Dark Knight III- The Master Race (with Frank Miller, Andy Kubert and Klaus Janson), Superman- For Tomorrow (with Jim Lee), Joker and Luthor (both with Lee Bermejo) and Wonder Woman (with Cliff Chiang). Most recently he reunited with Lee Bermejo to kick off DC's Black Label imprint with the bestseller Batman- Damned.

Irish-born writer Garth Ennis is the acclaimed author of the PREACHER graphic novel series, and also has written numerous JOHN CONSTANTINE, HELLBLAZER graphic novels, as well as THE AUTHORITY, THE BOYS, WAR STORIES, PRIDE AND JOY, ALL-STAR SECTION EIGHT, and many other titles.