Tate Walker is a key figure in Kya's life as both her love interest and mentor. He teaches her to read and introduces her to scientific literature, playing a crucial role in her survival and eventual acclaim.

Jumpin’ is an African-American character whose kindness and assistance help Kya survive after her family leaves. He provides support discretely, due to the racial constraints of the time.

Jake is Kya’s father, characterized by his abusive and neglectful nature, contributing significantly to Kya’s early traumas before he ultimately abandons her.

Marie is Kya’s mother who, despite being loving, is unable to protect Kya from Jake’s abuse and leaves the family, deeply affecting Kya.

Chase is the wealthy, entitled son of store owners who exploits and abandons Kya. His involvement with her influences major plot developments in the novel.

Sheriff Ed Jackson is the small-town sheriff tasked with solving Chase’s murder. His investigation is marked by bias and ineptitude.

Mabel is Jumpin’s wife who assists Kya by gathering donations and helping her with personal milestones. Her actions reflect community support for Kya.

Patti Love, Chase Andrews's mother, is characterized by her concern for appearances and contributes to Kya becoming a suspect.

Pearl Stone, known as Alwayswearspearls, is a town girl who looks down on Kya due to social class differences.

Robert Foster is Kya’s editor who testifies during her trial, providing an alibi and support for her character.

Tom Milton is Kya’s attorney during her murder trial, whose defense effectively challenges the biases of the townspeople.

Scupper is Tate’s father and a shrimper who plays a background role in encouraging his son to value authentic relationships.