A 30-year-old man who works on Rurusk Station and experiences feelings of being different from those around him. Reet's character explores themes of belonging and identity, especially in relation to his mysterious origins.

One of the Translator juveniles who grows up alongside Qven and plays a significant role in their early life. Tzam presents with a charming demeanor that hides ulterior motives regarding Translator matching.

An adult Translator intended to match with Qven, serving as a primary antagonist. Dlar's interactions with Qven highlight issues around personal choice and respect.

A supportive figure in Qven's life who provides guidance and reassures Qven about the importance of individual choices. The Teacher becomes an important ally in Qven's journey.

Reet’s adoptive mother, part of the Chirra ethnic group, who is especially caring and involved in fighting for Reet’s rights. She is one of Reet’s three supportive parents.

Reet’s verbally abrasive yet devoted adoptive parent from the Chirra ethnic group. Nana is vocal in family discussions and actions concerning Reet’s standing and rights.

One of Reet's adoptive parents, belonging to the Chirra group, who supports him through his journey. Maman plays an important role in Reet's sense of family and acceptance.

A 56-year-old human from the Saeniss Polity who embarks on a personal journey of self-discovery and independence following the death of a controlling family member. Enae’s arc explores themes of self-determination and personal growth.

A human Radchaai ambassador whose political motivations lead her to oppose broader definitions of humanity. Seimet’s role in the narrative highlights interspecies diplomatic tensions.

A treaty jurist supporting inclusive definitions of humanity, opposing narrow interpretations set by the Radchaai. She has adapted to low gravity environments and uses a mobility device.

A Geck ambassador who communicates through a biological mech suit due to her species' amphibious nature. Agagag represents the presence of other Significant Species impacted by human treaties.

A human working as a Geck ambassador who participates briefly in the story and dislikes her role. She provides insight into diplomatic relationships but remains a minor character.

A sentient AI associated with the Republic of Two Systems, advocating for AI recognition as autonomous beings. Sphene interacts using ancillary bodies and supports broader inclusivity in definitions of personhood.

A member of the Hikipi ethnic group and leader of a resistant faction, involved in challenging oppressive regimes. His character wrestles with cultural identity and political activism.

An ally of Mr. Nadkal who plays a role in the resistance against oppressive forces and attempts to further her cause with aggressive actions. Her impetuosity leads to unexpected consequences.