Emma is a 12-year-old enslaved girl on the Butler plantation. She acts as a surrogate mother to Pierce Butler's daughters, Sarah and Frances. Empathetic and emotionally mature for her age, she initially believes her close ties to the Butler family will protect her from the auction block. Her experiences at the auction force her to confront the absolute vulnerability of her position and the reality that she owns neither her body nor her future.

Pierce is the wealthy owner of the Butler plantation who amasses massive gambling debts. To avoid financial ruin, he auctions off over 400 of the people he enslaves, rationalizing the act by convincing himself that Black people do not feel emotions as deeply as white people. He possesses a quick temper and resents any implication that his misfortunes are his own fault.

Will is Emma's father and an enslaved man on the Butler plantation. He grew up alongside Pierce Butler and saved his life from a river when they were younger, fostering a false belief that their shared history might spare his family from separation. He views the auction as a profound betrayal and struggles against the expectation that he must remain subservient while losing everything he loves.

Mattie is Emma's mother and works as a cook on the Butler plantation. Her family has deep ties to the Butlers, as her own mother served as Pierce's wet-nurse. She feels an impossible mixture of sorrow and burning hatred toward the people who control their lives, finding small, subtle ways to resist the power structure that oppresses her family.

Sarah is the eldest daughter of Pierce Butler and Fanny Kemble. She shares her mother's abolitionist sentiments and possesses a strong moral compass that puts her at odds with her father. She views Emma as a surrogate mother figure and relies heavily on the enslaved girl for emotional support and comfort.

Joe is an enslaved young man from the Butler plantation who harbors a deep affection for Emma. He holds a profound distrust of white people and understands the realities of their subjugation without the illusions of safety that some others cling to. His practical mindset focuses on building a future despite the severe limitations placed upon them.

Sampson is an older enslaved man who endured severe trauma and physical abuse at a previous plantation in Alabama. To survive, he adopts a worldview that slavery is protective, relying on strict obedience to avoid further beatings. He attempts to enforce this subservient mindset on his son, fearing that any rebellion will invite disaster.

Frances is the younger daughter of Pierce Butler. Unlike her sister Sarah, Frances aligns herself with her father's views on slavery and eagerly anticipates inheriting the plantation. She displays little empathy for the enslaved people around her and actively seeks her father's undivided attention.

Fanny is Pierce Butler's British ex-wife and the mother of Sarah and Frances. Her staunch abolitionist views and practice of illegally teaching enslaved people to read led to the dissolution of her marriage. She remains an influential figure in her daughter Sarah's moral development.

Mrs. Henfield is a plantation owner from Kentucky who purchases enslaved people at the auction. She expects complete obedience and gratitude from the people she enslaves, failing to recognize their humanity or the trauma of their displacement.

Jeremiah Henry is a white general store owner near the Kentucky border. He secretly harbors abolitionist sympathies and uses his position to interact with enslaved individuals, taking significant personal risks to offer them assistance and education.

Charles is a young enslaved man on the Henfield plantation. He deeply resents his father Sampson's subservient attitude and is determined to secure a life where he is not treated as property, particularly for the sake of his wife and child.

Winnie is an enslaved woman and Charles's wife. She faces extreme hardship to secure a future where her child will not be born into slavery.

George Weems is the fast-talking auctioneer hired to liquidate the Butler estate's human property. He views the enslaved people purely as merchandise and prides himself on his ability to manipulate buyers into paying premium prices.

Jeffrey is a young, strong enslaved man auctioned off by Pierce Butler. He frantically pleads with his new buyer to purchase the woman he loves so they will not be separated by the sale.

Dorcas is an enslaved woman on the Butler plantation who faces forced separation from her partner during the massive auction.