Green Lantern is a staple of the Justice League, and is rumoured to be appearing in [Batman v. Superman: Dawn of Justice](movie:711870) and the question Everyone asks when you talk about Green Lantern is which one should it be and who should play him.
I think that Green Lantern as a character doesn't have to be muscular and have a six pack and so on cause he is chosen to be a Green Lantern cause of his personality not his physicality, so with that here are my Choices for each Green Lantern.
Even though Hal Jordan has been done already I think they should go with him again, as unlike the other Green Lanterns Hal is very opinionated member of the Justice League and has constant arguments with batman cause of different opinions, Normally Hal is the comic factor of the Justice League being the sarcastic, Hot headed member but also what keeps the team positive and hopeful.
My choice for Hal Jordan is more unique than others I've seen, Jason Sudeikis, I think that for a comedy factor he is brilliant, he looks quite similar to some versions of Hal and I would like to see him in a role like this cause I want to see him in something a little darker which is what the DCCU (DC cinematic universe) is planning to be.
Now John Stewart has become some what of a favourite Green Lantern in the last decade or so mostly cause he was used in the Justice League cartoon, he is a more serious character being a veteran marine, and is more straightforward as a Green Lantern and puts another view into the Justice League cause he has Military experience unlike most of the other members.
Like with my Hal Jordan pick this actor isn't been thrown around much and it's Chiwetel Ejiofor, he is an terrific actor and does serious roles brilliantly and for the DCCU he would fit in perfectly.