In November 2012, rumors started buzzing around a superhero team few had ever heard about. The suggestion was that Guillermo Del Toro (Blade II, Hellboy, Pacific Rim) was working on a new film entitled Heaven Sent. The film, set in the DC Universe, would shine a light on characters less familiar to movie audiences. The main fixtures of the movie would include John Constantine, Swamp Thing, Zatanna, and Etrigan the Demon. These characters, and their teammates, would make up the Justice League Dark.