Back around 2007 the Justice League Mortal movie was in development at Warner Bros. which almost made it to the big screen. Armie Hammer starred as Batman and filming did kick off in Australia. However, production was closed down due to the writers' strike at the time and budget issues, and Christopher Nolan was developing Batman Begins with a different Batman, Christian Bale, around the same time.
With the release of this year's new Justice League movie, chatter picked up that Armie Hammer would again don a cape with fans hoping the actor would play Green Lantern. Obviously that never came to be, but Armie Hammer did recently talk about the possibility (or not) of doing a comic book flick, while also offering details about the Justice League Mortal movie.
Hammer appeared on the Happy and Confused podcast offering:
"It was darker... It was... You know it's funny. It was pre-Christian Bale, but the Christian Bale Batman had a lot more in common with it than any of the previous ones like whether it be the George Clooney, the Michael Keaton, all those which were almost campy. This one is about a guy who is severely psychologically almost deranged. It was dark, and it was really intense. This guy had major trust issues, you know the whole thing. It was a great concept and a really cool idea."
Hammer also previously described the Batman suit: "I put on the whole suit. Weta made our suit. It was all functioning. It had like carbon fiber, and it had like pistons and gears that would function. It was amazing! It was like a exoskeleton suit."
Superman vs Wonder Woman (Jay Baruchel also talks about it here):
"Superman and Wonder Woman had the most brutal fight with each other that you've ever seen. It would be like if two superheroes actually would fight. They destroy multiple cities, like by accident because they don't see anything else other than trying to destroy the person in front of them, and it was incredible. I mean at one point they destroy an aircraft carrier by accident."
"Also the death count was going to be extremely high. Maxwell Lord has this fast food chain, imagine like it would be McDonalds, but inside all the food that he has been preparing for people, he's putting nanobots, and this is back when no one knew about nanobots. So everyone is consuming this food like an addiction, because he is putting this sh-t in it to make them addicted to it, too, and then they are consuming these nanobots. Then at one point, he pushes a button that's like 'activate' -- and these nanobots literally kill almost every person that has eaten his food and turn them into these cyborgs. Then all of a sudden you have to fight all these nanobot humans who are programmed to kill all these guys."
"They also had Martian Manhunter in it who was played by Hugh Keays-Byrne. He was amazing."
Justice League Mortal cast:
Armie Hammer (Batman), DJ Cotrona (Superman), Megan Gale (Wonder Woman), Adam Brody (The Flash), Common (Green Lantern), Santiago Cabrera (Aquaman), Teresa Palmer (Talia Al Ghul), Zoe Kasan (Iris Allen), Hugh Keays-Byrne (Martian Manhunter) and Jay Baruchel (Maxwell Lord).