Ruby Sunday
| Ruby Sunday | |
|---|---|
| Doctor Who character | |
Millie Gibson as Ruby Sunday | |
| First appearance | "The Church on Ruby Road" (2023) |
| Last appearance | "The Reality War" (2025) |
| Created by | Russell T Davies |
| Portrayed by | Millie Gibson Amanda Walker (old) |
| Duration | 2023–2025 |
| In-universe information | |
| Species | Human |
| Gender | Female |
| Affiliation | |
| Family |
|
| Relatives | Cherry Sunday (adoptive grandmother) |
| Origin | Manchester, England |
| Home era | 21st century |
Ruby Sunday is a fictional character in the British science fiction television series Doctor Who, created by Russell T Davies and portrayed by Millie Gibson. In the show's fourteenth series, starting with the Christmas special, Ruby serves as the companion to the Fifteenth Doctor (Ncuti Gatwa), an incarnation of the alien time traveller known as the Doctor.