Ruby White

Ruby Anne White was a Katesh who came to Earth and moved into Bannerman Road replacing Sarah Jane Smith, she fed off the excitement in her life. She owned an Artificial intelligence that was named Mr White by Clyde Langer. (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.