Park Planet and the Park family
Orville Park unveils Park Planet on Olivia's birthday, promising that everyone who visits will be under her “watchful care” and that the park can make up for something in her past. By the present day Olivia is old and bedridden in the tower, tended by robots, still answerable to a board — and still obsessed with Gwen.
The slums below
Beneath the floating park lies a polluted sea and poor neighbourhoods that live off its scrap. Park Planet dumps garbage into the ocean; scrappers like Sparky's crew haul it back to be melted into new merchandise. Park workers are resented below as “crownies”.
Gwen droids
Guinevere is mass-produced in many personas. Park adverts claim each unit learns from its guests so that it never forgets them. Standard Gwens are not supposed to be capable of violence — which is exactly why Frankie's Gwen is such a problem.
The tower's guardians
Olivia keeps two giant robots. One, Sir Arthur, is sent after Gwen in the pilot and destroyed; the second has not acted yet.