Kreon
Kreon was a member of the galaxy-spanning police force called the Green Lantern Corps. A former warlord who fought to maintain peace, Kreon was chosen to become a Lantern by Hal Jordan. Kreon served the Lanterns proudly, until he was believed killed by a possessed Hal Jordan. In actuality, he was found by the evil robot Manhunters and held captive for years. Hal Jordan tried to rescue him, but Kreon was killed during the escape. And this time, his death seems to have stuck.