Malorie’s friend and mentor, a schoolteacher turned leader who is committed to improving life at the safe house.

Children raised by Malorie, trained in survival skills, who represent hope for a better future despite their limited understanding of the world.

A skeptical and cynical housemate whose fear of others makes him susceptible to dangerous ideas.

Housemates at Riverbridge who contribute various skills to the group's survival, forming a close-knit community with Malorie.

A manipulative latecomer to the safe house who presents dangerous theories, impacting the group's dynamics.

Malorie’s sister and roommate at the start of the Problem, whose early belief in the danger contrasts with Malorie’s initial skepticism.