Growth Codex
Alias(es) Registry of Citizens Codex
Owner(s) Kal-El
User(s) Kal-El
Status Active
Appeared in Man of Steel

The Growth Codex or Registry of Citizens Codex, is an ancient kryptonian artifact that decodes the genetic makeup of the artificially incubated babies on the planet. It translates a child's genetic attributes before his or her birth. Zod was born to be a soldier, as dictated by the Codex. Zod needed the Codex in order to shape the genetic future of a reborn Krypton population.


Man of Steel

When Kryptonians created the technology to create new life forms from a genetic matter, the planet stopped producing offspring naturally.

When a massive terraforming project was activated to spread Kryptonians throughout the galaxy, a Growth Codex was installed into every scout ship along with the genetic matter to create a new Kryptonian civilization on a chosen planet.

Just before Krypton's destruction when Zod, military leader of the planet decided to overthrow the Kryptonian Law Council. The scientist Jor-El opposed Zod's plans and stole the main Codex and placed it in a ship along with his newborn son Kal-El and sent it to Earth out of Zod's reach, who was shortly sentenced to 300 years imprisonment in the Phantom Zone for murder of Jor-El and others.

Zod and his forces escape from the Zone and tracked Kal-El to Earth and searching his ship, could not trace the Codex which had in fact been placed in Kal-El as a baby meaning he carries the sole hope for Krypton's future.

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