Green Lantern Corps is reportedly a buddy cop style movie starring Hal Jordan and John Stewart. As the protectors of Earth, they're part of an intergalactic group that calls the planet of Oa their base of operation. Through the use of their power rings, they can create anything their minds imagine. But, they aren't the only Lanterns in the galaxy. Red, Black, White, Orange, and other Lanterns exist, including the Sinestro Corps, who are powered by yellow power rings. These were introduced in the comics by Johns, so we could see this aspect explored here.
