Black Zero is the name of several entities in the Superman mythos. The original was a super-villain directly responsible for the destruction of the planet Krypton. The Black Zero Organization was a Kryptonian terrorist group. They also developed the Black Zero Virus, a program that plagued technology in the Fortress of Solitude. There was a Black Zero Unit as part of the Kryptonian Military Guild. The title is also associated with Kon-El. The first Kon-El Black Zero was an evil version from Hypertime. The second was the Kon-El of Earth 0, corrupted by Blackfire.
The name Black Zero was first used by Otto Binder in Superman #205 (1968).
Multiverse
Earth-One
Superman villain
New Earth
Kryptonian Terrorists
New Earth
Computer Virus
New Earth
Military Guild
Other Media
DC Extended Universe
Kryptonian Spaceship