This should be a good one to spec on if the movie turns out well. The next Green Lantern movie will be entitled Green Lantern Corps.
The Green Lantern Corps first appeared in Green Lantern #6 from 1961, which copies range from $67 to $150 on eBay (all two copies up) except the one without a cover for $25, however there are a ton of possible characters that could pop.
Straight from the Warner Bros. Hall H panel at San Diego Comic-Con comes the news that the upcoming “Green Lantern” reboot will be officially titled Green Lantern Corps. It’s unclear who will be the primary protagonist or protagonists of the film, but between Hal Jordan, Guy Gardner, John Stewart and Kyle Rayner, plus thousands of alien Lanterns, the possibilities are endless.