“THE ULTIMATE ENEMY!” Superman fights a silent enemy clad in indestructible armor who has connections to Superman’s very origins!

Written By:
Edmond Hamilton, Leo Dorfman
Pencils:
Henry Boltinoff, Al Plastino, Jim Mooney
Inks:
Henry Boltinoff, Al Plastino, Jim Mooney
Cover By:
Sheldon Moldoff, Curt Swan