Ruby White

Ruby Anne White was a Katesh who came to Earth and moved into Bannerman Road to replace Sarah Jane Smith and feed off the excitement in her life. She owns a AI named Mr White by Rani. (SJA: Goodbye, Sarah Jane Smith)

Behind the Scenes

 * She is often seen wearing red outfits, having a red front door and driving a red car, as "Ruby" is a sort of red stone.
 * Ruby may be a cover name due to the fact that she is an alien.