Jamie is the narrator and the oldest resident of the island, having lived there for hundreds of seasons, though he appears to be about 12 years old. As Peter Pan’s first and longest-lasting companion, he holds a special, albeit strained, position in the group hierarchy. While he participates in the island's brutal skirmishes and is a formidable fighter, Jamie uniquely possesses a strong sense of empathy. He acts as a caretaker for the younger boys and quietly questions Peter's careless cruelty.

Peter is the eternally youthful, charismatic leader of the island who brings boys from the Other Place to serve as his playmates. Though he projects an aura of innocent fun, he is profoundly narcissistic and completely indifferent to the suffering, illness, or survival of his followers. He demands absolute loyalty and treats the violent, life-or-death struggles on the island as mere games designed solely for his entertainment.

Charlie is a five-year-old boy recently brought to the island from the Other Place. Soft-featured and easily frightened, he stands out among the hardened, violent residents because he is far too young to participate in their skirmishes. He relies heavily on Jamie for protection against both the island's monsters and the cruelty of the other boys.

Sal is a new arrival brought from the Other Place to replenish the camp's numbers following a deadly encounter. Standing out from the bloodthirsty veteran residents, Sal is exceptionally kind, thoughtful, and quick to help care for the younger members of the camp.

Nod is one of the island's more seasoned residents, having lived there nearly as long as Jamie. He and his identical twin brother, Fog, love the thrill of battle and frequently spar with one another when not fighting pirates or monsters. He enthusiastically follows Peter's commands but respects Jamie's combat skills.

Fog is Nod's identical twin brother and a veteran of the island's endless skirmishes. He shares his brother's love of fighting and readily throws himself into the dangerous games orchestrated by Peter. When real danger strikes, he relies on Jamie's tactical directions to survive.

Nip is a relatively new arrival who quickly establishes himself as a brutal, unpredictable presence in the camp. Desperate to replace Jamie as Peter's favorite, Nip routinely antagonizes the other boys and eagerly embraces the island's violence, making him a dangerous internal threat to the group's fragile peace.

Del is a seasoned resident of the island who suffers from a severe case of tuberculosis. Despite his illness and the constant coughing that irritates Peter, he remains a responsible and helpful member of the community. He takes charge of food distribution and watches over the vulnerable members of the camp.

Harry is one of the boys living in the hollow tree who participates in the group's hunting parties. He actively helps defend the camp against the island's lethal threats, joining Jamie on dangerous excursions into monster territory.

Crow is a new recruit brought to the island by Peter. He quickly adapts to the violent environment and forms a fast, tight-knit bond with the twins, effectively becoming a third member of their chaotic unit.

Slightly is a thin boy brought to the island to replace the members of the camp lost to sickness or violence. He struggles to adapt to the lethal environment dictated by Peter's games.

Tink is a fairy residing on the island who possesses a secret alliance with Peter. She communicates with him from afar and teaches him abilities that the other boys do not possess.

Red Tom is one of the adult pirates exiled to the island's bay. Missing a hand from a previous skirmish, he represents the constant, violent threat of the adult world that the boys battle in their endless games.