Zane is a twelve-year-old biracial boy from New Hampshire with green eyes and straight hair. Initially uninterested in his father's heritage, he is deeply devoted to his mother and his beloved dog Bandy. He has a vivid imagination and a good sense of humor but frequently struggles with self-esteem and views himself critically.

Malvina is a skinny, smart, and sassy Black girl with big dark eyes who aspires to be a stand-up comedian. She uses her quick wit and corny jokes to survive difficult situations and mask her emotional vulnerabilities. Deeply loyal to those she trusts, she views her chosen friends as her true family.

Mr. Trudell Manning is an older, light-skinned Black man who works as a professional jazz and blues horn player. He serves as a calm and fiercely protective father figure to Malvina. Distinguishable by his dreadlocks and eccentric hat with a pink feather, Tru carries a deep respect for his community and its musical history.

Beatrice Jackson is Zane's elderly great-grandmother who lives in the Lower Ninth Ward of New Orleans. She is deeply religious, proud of her family history, and possesses a legendary singing voice. Her home serves as a pristine shrine to her family's past, and she eagerly shares stories to connect Zane to his heritage.

Dylan Toomey is a local drug lord who presents an intimidating figure in the community. Outwardly offering help, he is secretly manipulative and ruthless. He uses his wealth and influence to control others and shows particular interest in tracking down Malvina.

Bandit the Wonder Dog is Zane's small black-and-white mutt. The two share an almost telepathic bond, and Bandy is incredibly loyal and brave. His sharp instincts prove crucial as the group attempts to survive the hurricane.

Belinda is Tru's cousin, a practical veterinary technician who runs the Last Chance Animal Shelter. She is a short, round woman with an authoritative presence that commands respect. Like Tru, she deeply values family connections and stands ready to help those in need.

Zane's mother is a caring, organized white woman who deeply loves her son and wants him to understand his heritage. She is a persistent researcher who finally tracks down Gerald's family. Her practical advice and loving maxims stay with Zane even when they are separated by the storm.

Gerald is Zane's late father, a Black man who grew up in New Orleans under Miss Trissy's care before joining the Air Force. Though he died before Zane was born, his presence lingers in Zane's physical features, infectious laugh, and the family history he left behind.

Boss Man is the hostile leader of a private security team hired to protect an untouched mansion in a wealthy unflooded neighborhood. He is an aggressive, racially prejudiced bully who uses his position and a shotgun to demean those seeking help.