Ruby Sunday

Ruby Sunday was a companion of the Fifteenth Doctor.

Abandoned as a baby by her mother, Ruby was soon fostered, and then adopted, by Carla Sunday and raised alongside other children that she fostered, developing a protective personality and changing the lives of Carla and her adopted grandmother, Cherry, for the better.

Upon her nineteenth birthday, she and the Doctor defeated the Goblin King and his Goblins, preventing them from continuing to abduct the babies of the world. She then joined the Doctor in his travels.