The Spectre (Hal Jordan) VS. Paralax (Hal Jordan): Here's the deal. When The Joker commited another major crime, Hal finally thought to himself: "I'm the angel of vengance. Why is this guy still alive?" So, he reached into The Joker's head and tried to shut off his brain. However, he wasn't prepared for how utterly warped The Joker's mind was, and was sent reeling in pain and confusion all the way to the moon. There, he vomited. And that vomit grew into a very insane and somewhat Joker like clone that was the spitting image of Hal as Paralax. This was all of Hal's darker thoughts, negativity, anger, psychosis, and basically all of the things he pushed to the back of his mind after he became the Spectre incarnate. Paralax was back, baby. And he was going to paint the town red. What insued was a cosmic battle across the heavens. It was ****ing cool.
