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. This was also the name used by Black Zero, an evil clone of Superboy. The name was first used by Otto Binder in Superman #205. (1968)
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