"It's entirely possible your version of Superman simply never had a cousin, or she died during Krypton's destruction. You also met Kon-El, who is indeed Superman's clone. Well, perhaps I should be more accurate--he's his half-clone. Half of his DNA comes from Superman, the rest was grafted human DNA to stabilize it. He was an honorary member of the Legion for a time, and when he was trapped in the future, he was made an active member."