A father or grandfather figure to the unnamed protagonist who once worked on the ferry and experiences the disappearances like her. He is known for his resourcefulness and shares a close bond with the protagonist.

The protagonist's editor, referred to simply as 'R,' who possesses the special ability to remember everything, making him a fugitive. He shares a secret and protective relationship with the protagonist and her circle.

A dermatologist who, along with his family, is hunted by the Memory Police due to his knowledge and attempts to flee. His association with the protagonist is marked by shared experiences and trust.

A dog named after his doghouse, originally belonging to the protagonist's neighbors, who becomes part of her makeshift family. His presence provides warmth and companionship amidst the tension.

The narrator of the story-within-a-story, she is a symbol of gradual disappearance and serves as a narrative tool reflecting the main storyline. Known for losing her voice, her arc parallels that of the protagonist.

A character from the story within the manuscript who extracts women's voices and embodies the oppressive forces the protagonist faces. His methods and objectives are mirrored by the external Memory Police.

The protagonist’s mother has the ability to remember everything and influences the protagonist's actions and motivations, especially in how she relates to R. The father is an ornithologist whose past work ties into the overarching themes of memory and loss.

Residents of the unnamed island who share interactions and perspectives on the disappearances but remain largely undeveloped as individuals. They provide a backdrop to the protagonist's life and experiences.

Represent the oppressive regime enforcing disappearances on the island, distinguished by luxury and power. They symbolize overarching control and the manipulation of knowledge and memory.