Rather than deal in speculation or wait for that pesky script to make it's rounds on the internet(as they all do) to figure out what the Green Lantern movie is going to be about, why not just take a gander at the casting notice and draw our own conclusions? All that we really know so far is that Ryan Reynolds is the lead, presumably as Hal Jordan, greatest Green Lantern of 'em all(although I'm partial to Guy Gardner). But we know little else. So let's take a gander at the casting call and see what's up...
[DR. HECTOR HAMMOND]
27-35, Character actor who is austere and impersonal, he is real “scummy.” He is a pathologist and also the son of a Senator.
[SINESTRO]
Mid-30s to Mid-40s, he is smart, tough, intimidating and in great physical shape.
The key character here is Sinestro, fierce enemy of the Green Lantern Corps and personal nemesis of Hal Jordan. Likely, the film will revolve around his downward spiral as one of the Corps' greatest heroes to one of the universe's most wanted criminals. If Peter Dinklage(The Station Agent) were a couple feet taller I'd say he was perfect for it.
[ABIN SUR]
Mid-30s to mid-40s, he is a great warrior.
I don't want to speculate on the path the film is going to take, but Abin Sur is the alien who, as his last living act, deemed Hal Jordan worthy to carry the mantle of a Green Lantern. Chances are something similar will happen in the film, but we shall see.
[CAROL FERRIS]
26-32, a smart and attractive woman with an MBA. She started as a pilot and now runs Ferris Aircraft. She is a work-a-holic…FEMALE LEAD
This looks like it's going to be the other main character opposite Green Lantern himself. In the comics, Carol is one of Hal's greatest loves, but she eventually betrays him and becomes the evil Star Sapphire. I doubt we'll see her don the hot purple spandex this film, but assuming this becomes the franchise WB wants it to become, count on seeing this transformation take place at some point. Y'know who'd be perfect for this part? Mary Elizabeth Winstead(Death Proof, Sky High).