Garth Ennis is a Northern Irish–American comics writer, best known for the Vertigo series Preacher with artist Steve Dillon, his nine-year run on Marvel Comics' Punisher franchise, and The Boys with artist Darick Robertson. He has collaborated with artists such as Dillon and Glenn Fabry on Preacher, John McCrea on Hitman, Marc Silvestri on The Darkness, and Carlos Ezquerra on both Preacher and Hitman. His work has won him recognition in the comics industry, including nominations for the Comics Buyer's Guide Award for Favorite Writer in 1997, 1998, 1999, and 2000.

Vertigo Comics was an imprint of American comic book publisher DC Comics started by editor Karen Berger in 1993. Vertigo's purpose was to publish comics with adult content, such as nudity, drug use, profanity, and graphic violence, that did not fit the restrictions of DC's main line, thus allowing more creative freedom. Its titles consisted of company-owned comics set in the DC Universe, such as The Sandman and Hellblazer, and creator-owned works, such as Preacher, Y: The Last Man and Fables.