Superman #137 1998

Superman #137, published by DC in May 1960, presents "The Two Faces of Superman!" This issue features an untold tale where Kal-El's rocket accidentally creates an evil duplicate, Super-Brat, who is raised by criminals. Growing into Super-Menace, this doppelgänger, invulnerable to Kryptonite, becomes a formidable foe for Superman. The story explores themes of upbringing and destiny, culminating in a surprisingly dark resolution for the Silver Age. Written by Jerry Siegel with art by Curt Swan, it's notable for its unique villain and impactful narrative.