Nick Offerman was taken aback when he got a call from Alex Garland, offering him a part in the series. Offerman was thrilled with this outside-the-box casting as he's usually just asked to do comedy roles.
Amaya is named after (and played by) Sonoya Mizuno's niece.
FX initially signed on for a pilot episode but then swiftly changed their mind and went for a straight-to-series order.
Amaya is also referenced in Annihilation, also by Alex Garland. The fort previously occupied by the soldiers and discovered by the women is named Fort Amaya.