the principal rules of the Green Lantern Corps, which forbids Lanterns from using their rings for personal gain. Enraged at their apathy, Hal siphons off the energy from the projection and makes his way to the Guardians' planet Oa, with the intent of bleeding off all the energy from the Main Power Battery in order to permanently re-create Coast City. Issue #49 saw him going up against various members of the Green Lantern Corps, each of whom fell against Hal, until he got to Oa. Hal steals the rings from each defeated colleague and leaves them for dead. Issue #50 sees Hal battle the renegade former Green Lantern Sinestro on Oa, who had been previously imprisoned in the Main Battery, but released by the Guardians to stop Jordan. Jordan then proceeds to kill Sinestro, as well as his fellow Green Lantern Kilowog. The Guardians, having realized that their cause was lost, had given all their remaining energy to the Guardian named Ganthet, who became the sole Guardian after this energy transference resulted in the death of the rest of them. Hal takes all the energy in the Central Power Battery, and when he emerged from it, he has a new costume and takes the name Parallax. Aftermath Ganthet travels to Earth and finds an illustrator named Kyle Rayner (who had been briefly introduced at the end of issue #48 when he saw Hal fly off and mistook his green flight streak for a shooting star). Ganthet gives Kyle the last remaining power ring, thus making Kyle the last Green Lantern. As Parallax, Hal Jordan became a recurring villain in the DC Universe. In "Emerald Fallout", which takes place in issues 18–21 of Guy Gardner: Warrior Guy Gardner receives a vision of the events of "Emerald Twilight". Guy, along with Wonder Woman, Alan Scott, Arisia, Darkstar Ferrin Colos, the Martian Manhunter, Captain Atom and the Ray go to what was left of Oa. He challenges Hal and is defeated when Hal melts his yellow power ring. The character played a central role during the Zero Hour storyline. Later Hal displays his final act of heroism, sacrificing his life to reignite the Sun at the conclusion of The Final Night storyline. Redeemed in the eyes of many of his fellow heroes, he received a hero's funeral. Not fit either for Heaven or Hell, Jordan's soul was destined for Purgatory, until he became