"Lanterns" show will focus on the two better-known members of the Green Lantern Corps, Hal Jordan and John Stewart. Ryan Reynolds played Jordan in the 2011 "Green Lantern" film, while Stewart became a fan-favourite in part thanks to his role in the 2000s animated series "Justice League." He was also one of DC's first Black heroes. Gunn said this show will have "True Detective" vibes as the duo investigates a mystery that will be essential to the DCU.