Emperor Parallax

Following the complete destruction of his home town Coast City by the villain Mongul, Hal Jordan descends into madness. Jordan went on a rampage, destroying the Green Lantern Corps, killing his friend Kilowog and all of the Guardians except for Ganthet. Hal Jordan became Parallax. As Parallax, Hal Jordan created an alternate universe. If you are familiar with Star Trek, he created a mirror universe, where all that is good is evil and all that is evil is good! Once he created this universe, Hal Jordan created an evil Empire bent on conquering all of the universes! Parallax (Hal Jordan) then declared himself Emperor! The Empire then declared war on all the other universes! Emperor Jordan then began his quest to dominate all the universes! Fortunately, a hero rose to challenge Emperor Jordan and his Empire! This hero was the good alternate universe Emperor Palpatine! The alternate Palpatine united all of the universes against Emperor Jordan's Empire! The alternate Palpatine and his allies vowed to rid this universe of the evil Emperor Hal Jordan, also known as Parallax!