Geoffrey Johns is an American comic book writer, screenwriter, and film and television producer. Johns's work on the DC Comics characters Green Lantern, Aquaman, Flash, and Superman has drawn critical acclaim. He co-created the DC character Courtney Whitmore based on his deceased sister. He also expanded the Green Lantern mythology, adding in new concepts and co-creating numerous characters. Among the DC characters and concepts he co-created are Larfleeze, the Sinestro Corps, the Indigo Tribe,...