Back in May, we reported that filmmaker Ryan Unicomb is putting together a documentary that examines director George Miller's unmade 2008 superhero movie Justice League Mortal. The director has already secured private funding for the documentary, which is described as, "an unbiased account of the project's development, preproduction and cancellation, as well as the impact on the Australian film industry." We haven't heard anything about the project since then, and it seems there is one major obstacle standing in the filmmakers' way: Warner Bros. Pictures.

The director has contacted Warner Bros. Pictures, seeking permission to use their characters and images in the documentary, which is entitled Miller's Justice League Mortal. In an interview with IF.com.au, Ryan Unicomb reveals that the whole project essentially hinges on Warner Bros.' approval. Here's what the filmmaker had to say, revealing that director George Miller and his producing partner Doug Mitchell are aware of his film.

"It's a nervous wait. George Miller and Doug Mitchell know about the project, so now it all hangs on Warner Bros' involvement."

Ryan Unicomb has already filmed preliminary interviews with comic book artists on the influence of characters like Superman, Batman, Wonder Woman, The Flash and Green Lantern, who were all set to be featured in the movie. If the project is met with Warner Bros.' approval, then the director hopes to interview both George Miller and Doug Mitchell, along with concept artists and cast members who were already attached, before the studio pulled the plug in 2008. The crowd-funding site IndieGogo has already agreed to launch a campaign for the movie, to secure additional funding, contingent on the studio's approval.

Justice League: Mortal was set to star Armie Hammer (Batman), D.J. Cotrona (Superman), Megan Gale (Wonder Woman), Adam Brody (The Flash), Common (Green Lantern), Santiago Cabrera (Aquaman), Teresa Palmer (Talia Al Ghul), Zoe Kazan (Iris Allen), Hugh Keays-Byrne (Martian Manhunter) and Jay Baruchel (Maxwell Lord). Just a few months before production was set to begin, the writer's strike crippled the movie industry, and while George Miller tried to shoot the movie in either Canada or New Zealand, it never materialized. The director also tried to shoot in his native Australia, but the country's Film Finance Corporation deemed the project wasn't worthy of the 40 percent producer offset.

Related: Just How Finished Is the Justice League Snyder Cut?

While we wait for more details, the documentary's official Twitter account has been recently posting concept art posters designed by BossLogic, which you can check out below. Do you hope this documentary goes forward? Let us know what you think below.

Justice League Mortal Poster 1

Justice League Mortal Poster 2

Justice League Mortal Poster 3

Justice League Mortal Poster 4

Justice League Mortal Poster 5

Justice League Mortal Poster 6

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