| 1 | Devil | | Protagonist. aka Devon Culm. |
| | Robert M. | Carrick | Duke of Marwick. aka Ewan. |
| | Beast | | Devil's brother. aka Whit. |
| | Amanda | Fairfax | Lady. Member of the Ton. |
| | Matthew | Hagin | Lord. Amanda's husband. |
| | Jared | Faulk | Lord. Member of the Ton. |
| | Natasha | Corkwood | Younger sister of Jared. aka Tasha. |
| 2 | Felicity | Faircloth | Protagonist. Daughter of the Marquess of Bumble. |
| | Arthur | Faircloth | Felicity's twin brother. aka Earl Grout. |
| | | Bumble | Marquess of Bumble. Father of Felicity and Arthur. |
| | Annabelle | | Wife of the heir to the Marquessate of Wapping. |
| 3 | Dahlia | | Sister of Devil and Beast. aka Grace and Gracie. |
| 4 | Irving | | Butler at Felicity's ancestral home. |
| | Prudence | Featherstone | Arthur's wife. |
| | Matthew | Binghamton | Potential suitor of Felicity. |
| | Friedrich | Homrighausen | German. Another potential suitor of Felicity. |
| | Catherine | | Marchioness of Bumble. Mother of Felicity and Arthur. |
| | | Haven | Duke. |
| | | Haven | Duchess. |
| 6 | Mary | | Works for Beast. |
| | John | | Head of security of
Warehouse owned by Devil & Beast. |
| | Annika | | Foreman of Warehouse owned by Devil and Beast.
Aka Nik. |
| | | Calhoun | American. Co-owner of the The Singing Sparrow. |
| | Clare | | Works for Grace. |
| 8 | | Lilith | Lady. Acquaintance of Felicity. |
| 9 | Reggie | | One of the ruffians in Covent Garden. |
| | Hester | | One of the women working in the streets of Covent Garden. |
| 11 | Sesily | Talbot | Acquaintance of Felicity. |
| 13 | Brixton | | Boy who works for Devil and Beast. |
| 14 | Samir | | Wagon driver. Works for Devil and Beast. |
| 16 | Dinuka | | Works for Devil and Beast. |
| | Niall | | Wagon driver. Works for Devil and Beast. Scotsman. |
| | Hamish | | Niall's younger brother. Works for Devil and Beast. |
| 21 | Nelson | | Works at 72 Shelton Street owned by Daliah. |
| 24 | | Northumberland | Duchess. Hosts the most glamorous ball of the season. |
