A clerk who dedicates his free time to self-education at the library and is a member of the French Socialist Party. His interactions and ideological views contrast with Antoine’s, providing a counterpoint within the story's philosophical discourse.

Antoine's ex-lover, who once lived for "perfect moments" but has since become disenchanted. She is central to Antoine’s personal reflections and serves as a critical link to his past experiences and desires for connection.

The fictional city where Antoine resides, based on the real city of Le Havre in France. It serves as both a setting and a reflective character that mirrors the themes of the novel, such as class structure and existential symbolism.