Caleb | Calhoun | American. Proprietor of The Singing Sparrow. |
María | de Santibáñez | Beast's mother. |
Eddie | Doolan | One of the thugs in the Covent Garden market. |
Michael | Doolan | One of the thugs in the Covent Garden market. aka Mikey. |
| Eversley | Marchioness. Attended the Duchess of Warnick's Ball. |
Eleanora | Madewell | Hattie's best friend. Duke's daughter. aka Nora. |
Elisabeth | Madewell | Duchess of Holymoor. Nora's mother. Deceased. |
Peter | O'Malley | One of the opponents of Beast. |
Sally | Sasser | Acquaintance of Beast when he was younger. |
Andrew | Sedley | Earl of Cheadle. Hattie's father. Owner of Sedley Shipping. |
August | Sedley | Hattie's younger brother. aka Augie. |
Henrietta | Sedley | Protagonist. aka Hattie. |
Sesily | Talbot | Acquaintance of Caleb. |
| Warnick | Duchess. |
| Warnick | Duke. |
Saviour | Whittington | Protagonist. aka Whit. aka Beast. |
Abraham | | Works for Beast and Devil. |
Annika | | Works for Beast and Devil. Second in command. aka Nik. |
Bess | | Young girl selling flowers in the Covent Garden market. |
Brixton | | One of the best runners of Beast and Devil. |
Clare | | Isla's twin. |
Dahlia | | Owner of 72 Shelton Street establishment. |
David | | Works for Beast and Devil. |
Devil | | Beast's brother. One of the Bare knuckle Bastards. |
Dinuka | | Beast's 2nd outrider. |
Felicity | | Devil's wife. |
Isla | | Miles' daughter. |
Jamie | | Young man working for Beast and Devil. |
Marco | | Works for Beast and Devil. |
Mark | | Works for Beast and Devil. |
Mary | | Doctor's wife. |
Miles | | Works at Sedley Shipping. |
Niall | | Works for Beast and Devil. |
Rebecca | | Selling puppies at Covent Garden market. |
Robert | | Duke of Marwick. aka Ewan. |
Robert | | Works for Beast and Devil. |
Russel | | Augie's valet and friend. |
Sarita | | Works for Beast and Devil. |
Seth | | Rebecca's husband. |
Zeva | | One of Dahlia's employees. |