John Shelby: A key shareholder in the business, he is a street gangster and has significant influence over the local community, often using intimidation to achieve his goals.
Thomas Shelby: The ambitious leader of the Peaky Blinders gang, he is a war veteran and a shrewd businessman who seeks to expand his family's influence and wealth.
Arthur Shelby: Thomas's older brother, Arthur is known for his volatile temperament and strong loyalty to his family. He often struggles with his inner demons and the violent lifestyle of the gang.
Ada Shelby: The only sister of Thomas and Arthur, Ada is initially critical of the family's criminal activities but later finds her own way to navigate life in Birmingham.
Polly Gray: The matriarch of the Shelby family and the gang's treasurer, Polly is wise and manipulative, often guiding her family's decisions with a strong maternal instinct.
Michael Gray: Polly's son who returns from America during the series, Michael seeks to prove himself and often finds himself caught between family loyalty and personal ambition.