Lily’s boyfriend and co-narrator, an alcoholic pursuing recovery while fiercely protecting Lily and trying to keep their intimate life private.

Lily’s fierce sister and one of the ensemble’s six focal characters; she forms a main couple with her intellectual rival, Connor.

Rose’s intellectual sparring partner and rival, whose relationship with her makes them one of the story’s three principal couples.

Lo’s half-brother, a rock climber whose loyalty supports Lo and whose connection with Daisy forms another main relationship.

Lily’s youngest sister and Ryke’s partner within the core ensemble, distinguished from her sisters by her daredevil characterization.

Lo’s father, with whom Lo has a fraught relationship complicated by family tension surrounding Lo’s half-brother, Ryke.

One of Lily’s three named sisters, distinct in the available sources as the sibling outside the three principal couples.