Vidal

While [[Superboy]] is away in space, [[Ma and Pa Kent]] adopt another child for a month, a young man named [[Allen Greene]]. Allen, coincidentally, is really Vidal, an alien with a mission on Earth.  During his time in [[Smallville]], he masquerades as Superboy, and the Kents are forced to protect his secret identity as well, although they begin to worry about what Vidal’s mission really is.  Vidal finally reveals to the Kents, that he came to Earth in an attempt to find suitable foster parents for Superboy. He has tested them and believes that the Kents should adopt Superboy. The Kents agree, not revealing to Vidal that Superboy is already their foster son [[Clark Kent|Clark]] (Adv No. 260, May 1959: "The Kents' Second Super-Son!").