Warner Bros. Pushing Ahead With "Justice League Dark"
“Cowboys & Aliens was a completely manufactured myth of a comic book. They went in and sold the idea of Cowboys & Aliens based on a one-sheet of what they thought the cover of a comic book might be, then sold it as a movie, then created as a comic book. They backed in to the comic book part of it. The book itself isn’t actually very good. It’s worse than the movie.
I did another one like that — Hellbenders was an idea that J.T. Petty had, and he wrote it as a script. One of the producers got the idea to pitch it around as a comic book. As soon as something is a graphic novel or a comic book or has another life in a another medium, people sit up and take notice and are more willing to write the check.
I don’t know why that is — well, I think it’s obvious why that is: Because the traditional properties like Superman and Batman and the Marvel characters — Spider-Man and so on — they’re all money machines. So, people are trying to create that. […] Everything is being optioned now to be turned into franchises because of the success of Walking Dead and a few that have made the transition. Mostly, people walk into a room and pitch a movie — and the first question if they don’t say it in the original pitch is, ‘Is this a graphic novel or comic?’ and of course you say, ‘Yes’.”
– actor Clancy Brown, who has a good deal of experience with comic-book adaptations, discussing Cowboys & Aliens Hollywood’s continued attraction to comics