Bigger is a twenty-year-old Black man living in extreme poverty on the South Side of Chicago. He feels intensely limited by the systemic racism around him, leading to overwhelming feelings of anger and constant fear. Rather than accepting the menial jobs offered to him, he often acts out defensively, masking his underlying terror with hostility toward his family and friends. He takes a job as a chauffeur for a wealthy white family, which forces him into increasingly dangerous situations.

Mrs. Thomas is a tired, hardworking single mother raising three children in a cramped apartment. She works as a seamstress and laundress, relying on religion to find peace in a difficult life. She constantly worries about her eldest son's behavior and pressures him to secure steady employment to keep the family off relief.

Mr. Dalton is a wealthy white multimillionaire who runs a real estate company. He views himself as a philanthropist, donating large sums to Black charities and educational funds, while simultaneously charging inflated rent to Black tenants in segregated neighborhoods. He hires Bigger as a family driver as a charitable act.

Mrs. Dalton is Mr. Dalton's physically blind wife. She takes a particular interest in the lives of the family's Black employees, pushing them to pursue education. Her physical inability to see mirrors her profound inability to understand the harsh realities of the people she attempts to help.

Mary is the Daltons' twenty-year-old daughter. She is a university student who rebels against her parents' capitalist lifestyle by associating with the Communist Party. She attempts to treat Bigger as a social equal, completely unaware that her boundary-pushing behavior places him in severe danger.

Jan is Mary's boyfriend and an active member of the Communist Party. He earnestly desires to bridge the racial divide, forcing Bigger to call him by his first name and eat at a restaurant together. His aggressive attempts at friendship stem from political idealism rather than an understanding of Bigger's lived reality.

Bessie is Bigger's girlfriend, a woman worn down by her long hours working as a domestic servant. She turns to alcohol to cope with her difficult life and relies heavily on Bigger for emotional connection. Despite participating in small thefts in the past, she is terrified of serious criminal activity.

Buckley is the State Attorney running for reelection. He is a shrewd, politically motivated prosecutor who views crime solely as an opportunity to secure votes. He actively feeds into public hysteria, using harsh tactics and aggressive posturing to ensure convictions that will boost his political standing.

Buddy is Bigger's younger brother. Unlike the rest of the family, he lacks the constant anxiety and fear that dictate their lives. He views his older brother with unconditional trust and admiration, remaining fiercely loyal regardless of Bigger's actions.

Vera is Bigger's younger sister, a sensitive girl who attends sewing classes at the YMCA. She is easily frightened, especially by her older brother's unpredictable temper and harsh teasing. She shares her mother's anxious disposition and acute awareness of their social standing.

Gus is a member of Bigger's friend group and frequent accomplice in small-time robberies. He understands the unspoken racial boundaries of their world and is hesitant to cross them. He becomes the primary target of Bigger's physical aggression when the group discusses a risky robbery.

Jack is another member of Bigger's gang on the South Side of Chicago. He frequently spends time with Bigger at the pool hall and the movie theater, participating in their petty crimes. He serves as a buffer during the group's internal conflicts, occasionally stepping in to break up fights.

G.H. is the fourth member of Bigger's social circle. Like the others, he participates in their minor criminal activities but harbors a deep mistrust of his peers. He goes along with the group's plans but remains wary of the potential consequences.

Boris Max is a Jewish lawyer working for the Labor Defenders. He takes an interest in Bigger's situation, viewing his actions as the inevitable result of systemic oppression. He listens to Bigger without judgment, becoming the first white person to treat him with genuine understanding.

Peggy is the Daltons' Irish housekeeper. She has worked for the family for twenty years and views them as her own kin. She is friendly toward Bigger, showing him the duties of the house, but she firmly believes in the inherent goodness and generosity of her wealthy employers.

Doc is the owner of the local pool hall where Bigger and his friends spend their time. He tolerates their presence but keeps a close eye on their behavior. He maintains order in his business, keeping a gun behind the counter to handle serious disruptions.