its atmospheric composition is unsuitable for humans. It is also shown to have a natural satellite. Kryptonian society is divided into houses, such as the House of El. Citizens wear the crests of their house over their chests, which hold meanings, such as the crest of House of El meaning "hope". Kryptonian civilization is at least 100,000 years old and many millennia more advanced than human civilization on Earth, and had begun exploring the Milky Way Galaxy. Kryptonians later abandon these projects in favor of isolationism and artificial population control, engineering newborns for pre-determined roles in society. The planet's resources were strained, and the stability of the planet was threatened by careless mining of the planet's core. As Jor-El attempts to warn the Science Council of their folly, General Zod stages a coup. In hopes of preserving the Kryptonian race, Jor-El steals the genetic Codex of the planet (a list holding the DNA pattern of everyone yet to be born on Krypton) and infuses it into the cells of Kal-El, the first natural-born child on Krypton in centuries, and sends his son to Earth. Zod kills Jor-El and is arrested by the authorities. He and his followers are banished to the Phantom Zone shortly before Krypton is destroyed. In the 2016 film Batman v Superman: Dawn of Justice, Lex Luthor Jr. who in a deal with a Senator gained access to the crashed Scout Ship, managed to enter the ship using the fingerprints of General Zod. Using Zod's Command Key, he managed to access the Ship's mainframe. Luthor eventually overrides General Zod's authority over the ship, and learns how to use the Genesis Chamber. The Ship warned against what it would create, but Lex ordered it to proceed. Over the course of a couple of days, Zod's body began metamorphosing into a "Kryptonian Deformities", a crime among the Kryptonian Science Council. Teen Titans Go! To the Movies Krypton appears in the 2018 animated film Teen Titans Go! To the Movies. In the film, the Teen Titans travel to the planet and harmonized its crystals with music, preventing its destruction and preventing Kal-El from arriving on Earth and becoming Superman, although they later returned to Krypton and undid their actions and allowed the planet to be destroyed. Superman: Unbound Brainiac's abduction of Kandor, despite the resistance posed by Krypton's military, is shown in Superman: Unbound. Brainiac is infamous for destroying the