The man the power ring picked before Hal
We all know that Hal Jordan was chosen to become Green Lantern because the power ring found him to be most worthy of all the inhabitants of Earth. In this story from Action Comics Weekly, however, we meet the other ten individuals who the ring considered before settling on Jordan, including the one who was deemed worthier than Jordan and chosen ahead of him. (Guy Gardner and John Stewart were two of ten, obviously.)
Year later, when Hal is at death's door, his ring activates a program where it brings him all the other candidates so that he can pick one to be his successor.