C is for... Cathica

Cathica Santini Khadeni was a reporter working on Floor 139 of Satellite Five, which beamed news across the Earth Empire in the year 200,000. She longed to make it to Floor 500, to which the best people were promoted. She was upset when colleague Suki got promotion ahead of her, feeling that she was the better reporter. The Doctor challenged Cathica's refusal to question what was going on in the station. A journalist should ask questions, and query everything. After the Doctor and Rose overrode the lift to take them up to Floor 500, Cathica decided to start investigating, beginning with the heating system that pumped hot air away from the top of the station. She followed the Doctor and Rose to Floor 500, and overheard the Editor describing how the human race was being held in check through manipulation of the news, and that an alien creature called the Jagrafess was the real boss on the satellite. Knowing she was within earshot, the Doctor guided Cathica in what to do - linking herself to the station systems to channel the heat back into Floor 500. This destroyed the Jagrafess and killed the Editor.
Like all journalists on the station, Cathica had undergone an operation to have a small hatch opened in the front of her skull, allowing raw data to be beamed directly into the brain where it was edited into news.

Played by: Christine Adams. Appearances: The Long Game (2005).