: To prevent the AI from "infecting" the other 12 stations (which became the Ark), the Ark commanders ordered Polaris destroyed.
: Becca worked on a second, more "human" AI version on the station Polaris. [S3E7] Thirteen
: The episode parallelizes two "13th" entities: the 13th Grounder Clan ( Skaikru ) and the 13th space station ( Polaris ). : To prevent the AI from "infecting" the
: Commander Lexa is killed by an accidental gunshot, sparking massive fan backlash and a national conversation on the "Bury Your Queers" trope. Key Plot Developments 1. The Past: Polaris and the First Commander becoming the first Commander.
: Becca injected herself with "Nightblood" (a radiation filter) and escaped to Earth with A.L.I.E. 2.0, becoming the first Commander.