XL-49 of Earth-One as well as Vard and Boka of Earth-Two' have something in common. A few somethings in common, or we wouldn't consider them here, obviously! They were all Futuremen, coming from their world's future, using advanced technology to manipulate their respective Superman into doing something that would be personally gratify them. And therein, the comparison between these costumed characters ends, although this twice-told-tale involves a few inventive twists along the way.
XL-49 adopts the alias of the faux-superhero Futureman with the intent of engaging Lois Lane in romance. However his true agenda, as a historian with a specialty on the life-and-times of the Man of Tomorrow himself, was curious about a missing piece of information regarding the Metropolis Marvel's latter life... did he ever wed Miss Lane? Meanwhile, relatively speaking, Boka and Vard portrayed themselves as agents of a worldwide agency in their era, returning to the middle 20th century to capture Superman who would be a villain in their time. However, their intent was to use Superman's abilities to restore the depleted oceans of their century's Earth-Two, which they could capitalize on by profitting from this tragedy.
For Earth-One's Superman, its all a matter of staying cool and keeping his current convictions as a single man, causing Futureman to rethink his ploy and orchestrate the Man of Steel and his girlfriend to reconcile their feelings for one another. And despite causing the powers of Earth-Two's Superman to go bezerk from an ususual strain of Kryptonite leading him to their time, the Man of Steel still saved his adopted world using the frozen liquid from Saturns' sun while leaving the Dastardly Duo without their desired windfall of currency. Still, the machinations of the Futureman benefited their fellow man, or at least one woman in the Daily Planet's newsroom.