Nikki Jupiter

Nikki Jupiter was a private detective and briefly a companion of the Tenth Doctor.

Biography
When Nikki met the Doctor, she was seventeen. She was investigating the criminal underworld of New Memphis. She was working with her father, who was also a private detective. After Nikki stopped the corruption of the underworld a Judoon called Rok Ma joined her detective agency. (NSA: Judgement of the Judoon)