World's Finest Comics #283

In "Prologue," Superman and Batman clash in a brutal, unexpected duel—only for the true threat to emerge in the form of Superbat, a villain wielding the combined powers of the Legion of Super-Heroes from the 30th century. As the battle unfolds, the statues of Element Lad, Light Lass, Ultra Boy, and Sun Boy stand frozen in the background, hinting at a deeper mystery tied to the future’s mightiest heroes.