Moon’s father who raised him in isolation after the death of Moon's mother and imparted skills and a distrust of authority. He served in the Vietnam War, which influenced his decision to live remotely.

A law officer in Sumter County who abuses his power and is often in conflict with Moon, embodying the type of authority Moon was taught to distrust.

Moon’s first friend at Pinson, a 10-year-old boy living as a ward of the state with a progressive illness. He is enthusiastic about the idea of escaping to Alaska.

A 13-year-old boy at Pinson initially antagonistic toward Moon. He becomes an ally in Moon’s escape plan and demonstrates loyalty and support later in the story.

A middle-aged lawyer who initially opposes Moon but later advocates for him in court. He facilitates communication between Moon and his uncle and plays a key role in the resolution of Moon’s legal troubles.

The owner of a general store and one of the few people Moon is familiar with before his father's death. He tries to offer guidance to Moon regarding his father's unrealistic expectations.

Moon’s uncle, who was unknown to Moon prior to his father's passing. Accepting and kind, he offers Moon a chance to join his family and provides a sense of belonging.