Black Zero

Within DC Comics continuity the label 'Black Zero' is not a single mythic origin but an applied name across several narratives. It appears first as a space saboteur antagonist (Superman #205, 1968). Later uses include a Kryptonian terrorist organization/clone‑liberation movement depicted in World of Krypton (1988) that detonated a device into Krypton's core, an intelligent computer virus created by that group and hidden in Kryptonian technology, and an alternate‑reality Superboy who adopts the mantle to lead clone forces. The DCEU also uses the name for a Kryptonian prison frigate in film media. These applications share thematic links but have separate in‑universe origins per each story summary.

The 1968 Black Zero is presented as a humanoid space saboteur encountered in Superman #205; narrative events record that Jax‑Ur petrifies and shatters him. The Black Zero organization is associated with a device (often called the Destroyer) capable of firing concentrated nuclear energy into Krypton's core. The Black Zero virus is described as an intelligent program dormant within Kryptonian technology and the Fortress of Solitude's systems rather than a corporeal form. The alternate Superboy Black Zero is visually an alternate Superboy/clone who discards the Superman identity and adopts the Black Zero mantle while commanding clones; his outward appearance is that of a Superboy variant augmented by a visible telekinetic force field in the story summaries.

1968 Black Zero: can create 'psycho‑molecules' with his mind and shape them into any form of matter, has a plastic coating on his brain rendering him immune to hypnotism, and can make his body intangible to pass through solids. Black Zero (organization): engaged in political violence and detonated a device that fired concentrated nuclear energy into Krypton's core. Black Zero (computer virus): an intelligent virus dormant in Kryptonian technology that, when activated, projects a warped version of Krypton's history into the Fortress computers and attempts planetary destruction; it was halted by an induced power outage and removed. Black Zero (alternate Superboy): uses a telekinetic force field that simulates superhuman attributes (speed, strength, flight, invulnerability), grants resistance to energy attacks, permits tactile telekinesis (disassembling machines by touch and telekinetically immobilizing others), commands clone forces and conducts conquest across his Earth and into other realities until ultimately defeated.