the Fortress breaches its walls, allowing the Kryptonite Man to rush in. He is ambushed and killed by Krypto, who succumbs to radiation poisoning in the process. Superman flies into a rage upon discovering Lana's death, and the Legion of Super-Villains is frightened into fleeing back to their own time. After Brainiac deactivates when Luthor's body goes into rigor mortis, Superman realizes that not all of his old foes have yet been accounted for, and that the last one, Mister Mxyzptlk, must be behind such bizarre events. Mxyzptlk emerges, sheds his outer facade as a "funny little man" and reveals that after hundreds of years of being merely mischievous, he had become bored and began a new villainous phase in his immortal life. As Superman and Lois flee, they suddenly realize the significance of the statue Superman received, and Superman threatens Mxyzptlk with the Phantom Zone projector. Mxyzptlk panics and says his own name backwards, which sends him back to the Fifth Dimension; at the same time, Superman activates the projector, sending Mxyzptlk into the Phantom Zone. Mxyzptlk dies as he is torn in half between dimensions. Superman, in penance for breaking his own code against killing, voluntarily enters a chamber containing a sample of gold kryptonite — which permanently strips him of his powers — and disappears into the Arctic. Although Superman's body is never found, it is assumed by all parties that the powerless hero died of exposure. After Crane concludes his interview and leaves, Lois and Jordan's son Jonathan plays with a piece of coal as the couple comment on how much Jordan prefers a normal life, implying that Jordan is really the de-powered Superman. As Jonathan squeezes the coal into a diamond, Jordan winks to the reader, as he and Lois continue to "just live happily ever after". Collected editions The story was originally reprinted in 1997, in trade paperback format. In 2006, DC pulled the original trade paperback from the market and inserted it, along with Batman: The Killing Joke, into a revised edition of Across the Universe: The Stories of Alan Moore (now retitled DC Universe: The Stories of Alan Moore). The initial printing of this collection omitted the introduction essay at the start of the story, though this was corrected with later printings of the collection. In 2009, DC Comics re-released the story again as a stand-alone hardcover. The new version collected the