Superman 205 (Apr 1968) VG+ (4.5)

Cover by Neal Adams

The Man Who Destroyed Krypton

Script:Otto Binder
Pencils:Al Plastino
Inks:Al Plastino

Characters:Black Zero (villain, introduction); Superman; Clark Kent; Lois Lane; Jimmy Olsen; Perry White; Chief Inspector Watkins; Jor-El (flashback); Taz-Ki (flashback); Phantom Zone inhabitants [Jax-Ur; Professor Vakox; one unnamed prisoner]
Synopsis:Superman meets Black Zero, an agent of an interstellar pirate empire, who is sent out to destroy planets as they begin to achieve space travel. After learning that Black Zero was ultimately responsible for the destruction of Krypton, Superman releases Jax-Ur from the Phantom Zone to help him protect Earth and defeat Black Zero.