Action Comics #320

In "The Three Super-Enemies!", Superman faces a rare dilemma: to keep his identity hidden, he summons three legendary heroes from the past—only to realize too late they’re not heroes at all, but villains from a parallel world. Written by Otto Binder and brought to life by Curt Swan’s iconic pencils and Al Plastino’s dynamic inks, this 1965 classic features a clever twist on Superman’s usual heroics, with George Klein’s inks and Joe Letterese’s lettering adding to the timeless look. The cover by Curt Swan and George Klein captures the tension perfectly—three menacing figures looming over Metropolis, unaware of the chaos they’re about to unleash.