[GreenLantern]

Dwayne Johnson talks about his upcoming DC character:

Johnson didn’t limit the discussion to Hercules, as he also tackled his attachment to a couple of storied DC Comics characters

“So, you know, there’s been mutual interest with myself and DC for many years to find the right character. I, like everyone here in the room, love superheroes. So there’s been mutual interest with us for years, and we’ve been having ongoing discussions, myself and DC, for years about the right character, what the right character would be. That’s another thing, too: It had to be right.”

“The first quality we were looking for was that he had to be extremely complex and have a lot going on,” he said. “What that does for me as an actor and the studio is it gives us space that we can explore; his complexities.

“The other quality was that he had to – the character we were looking for had to be well-known but never brought to life.

“The third thing – and most important – is he had to be a badass mother####er, OK, and on a Superman level of power, where [he] could throw down. In those three qualities, I’m happy we’ve found that character.”

http://spinoff.comicbookresources.co...c-comics-role/

John Stewart fits the bill here.. besides Hal "The Attention Whore" Jordan, he is the most complex of the GL's.. but honestly after reading that I am putting my money on Martian Manhunter.