SPOILERS FOR PLANET HULK!!! This my interpretation of Hulk as a red Lantern!! I got the idea from a youtube video from Comics Explained about which marvel super hero would get lantern rings of each emotional spectrum. Check it out it's pretty cool. www.youtube.com/watch?v=g9ZrHS… I think Hulk would get the rings after his wife, Caiera, dies due to the warp core explosion leading to World War Hulk. The reason why I think he has two rings is because of Bruce since Hlk and Bruce share the same body, at least that's what I think. Thanks for the idea Rob.