Skaikru

Sky People, or Skaikru, is a term used by the Grounders to describe a person who came from the Ark. They are also commonly known as Arkers and on at least one occasion as Arkadians. The Sky People are descendants of humans who survived the Nuclear Apocalypse 97 years prior because they were already living in space or managed to escape in shuttles. With almost a century since the Apocalypse, the Ark merely needed to survive another two hundred years to ensure that the ground is viable for life. Little did most of the Ark population know that oxygen was running out, and soon enough, they would be forced to take their very homes through reentry, and begin life on the ground. The first Sky People were referred to as ‘Grounders’, which was the name used to indicate a person born on Earth rather than in space. The 400-odd humans escaped the apocalypse on 12 space stations, that were combined into the Ark. A metal remembrance book lists the names of everyone who has ever lived on the Ark, with the first page starting with the last generation of Grounders. Several members of the Ark’s Grounders seem to share a last name, indicating a possible family connection. Clarke and Abigail Griffin are the only main characters from the Ark whose last name is not shown on the list.