"The Third Kryptonian" is a three-issue Superman comic book story arc written by Kurt Busiek with art by Rick Leonardi. The story arc appears in Superman #668–670, and is rooted in a three-part story arc that was released between "Superman: Up, Up and Away!" and "Last Son" called "Back in Action", in which a villain named the Auctioneer captures people as trophies until Superman and an alliance of heroes and villains unites to stop him. The Auctioneer discloses that he came looking for the "third Kryptonian", a comment that confuses Superman. Although the third Kryptonian may have been Chris Kent, this was revealed not to be the case. The story in Superman #670 was slated to appear in the Superman Annual #13. Plot Part 1 Battling the Dominators, Superman spots Chris Kent, who should be in school. Chris tells him of his troubles in school, and Superman takes Chris to the Batcave to meet Batman and Robin. Upon learning that red sun radiation shuts off his powers, Superman asks Batman to make a projector small enough to be put in a watch for Chris. Chris is excited to see Robin, an ordinary human being, performing stunts. Receiving news of a bridge collapse, Batman mobilizes Superman and Chris, who save the people and repair the bridge. Batman alerts Superman to a group of rampaging kids with superhuman strength. Superman and Batman discover that the kids had inhaled some kind of alien compound through smoking, thinking they might lead him to the third Kryptonian. Meanwhile, an alien race, led by the mysterious Amalak, watches Superman, and learns of the Kryptonians living on Earth. Amalak also learns of the existence of Kandor. Superman goes to the place that supposedly produced the compound, discovering that it is house whose only inhabitant is a woman called Kristin Wells. Part 2 Superman comes upon Kristin Wells, noting her exotic garden. He starts to politely introduce himself, and she punches him to Tokyo. Superman returns to find Wells armed with a gun, threatening him. He says he's there to talk, and she stands down. She says that her real name is Karsta Wor-Ul and that she was a soldier under Admiral Dru-Zod until, generations ago, the Kryptonian government decided to shut down the Kryptonian Empire. Refusing to yield, she and others fled. They were pursued by Almerac agents and the group split and fractured, some returning to