Major Gallo's name is symbolic. In Italian "gallo" means "rooster"; in the show, Gallo is the character who warns the others of the approaching (deadly) sunrise.
First Belgian Netflix Original.
The series is inspired by the 2015 Polish science fiction novel The Old Axolotl by Jacek Dukaj.
On July 1, 2020, the series was renewed by Netflix for a second season.
The name of the airline, BE Airlines is a reference to the radioactive isotope Beryllium-10, a element created by solar flares.