Control (The Devil Goblins from Neptune)

Control was a man that headed a division of the Central Intelligence Agency, an organisation which was a rival of sorts to United Nations Intelligence Taskforce.

Control ordered Thomas Bruce to acquire secure files from UNIT and cause as much damage as possible while doing so. When Alistair Gordon Lethbridge-Stewart was captured by his men, he ordered them bring him to his location in America. He later killed Rose, the one responsible for bringing the Waro to Earth. (PROSE: The Devil Goblins from Neptune)

He was forced to help the Fifth Doctor and UNIT in 1999. (PROSE: The King of Terror)

In 2001, Control had Fitz Kreiner and Dave Young surveilled, and ordered Dave captured when he began showing signs of an alien infection. He operated from inside the CIA's Belgian headquarters. (PROSE: Escape Velocity)

Also in 2001, Control authorised Alexander Hartford's mission to Siberia to investigate the evidence of time travel experiments being conducted at the Naryshkin Institute. He asked Dr. Ostrander to build a device that could detect people who had travelled in time. (PROSE: Time Zero)

In 2010, Control was the boss of Agent Jennings, and had a reputation for putting agents into the field without consulting him. (PROSE: Apollo 23)

Control contacted Malady Chang by eyephone and ordered her to investigate Jonah Cosgrove. (PROSE: Trading Futures)

Appearance
Control had watery eyes, (PROSE: Time Zero) and dandruff. (PROSE: The King of Terror) He had a pale tongue and pale, bloodless lips. (PROSE: Time Zero) Control operated his branch of the CIA for decades, and showed no signs of aging. (PROSE: The King of Terror, Trading Futures)

Personality
Control expressed his frustration that UNIT were always the ones who ended up dealing with alien incursions, and wished for his team to have some kind of involvement. (PROSE: Escape Velocity)

Behind the Scenes
In the acknowledgements page of PROSE: Time Zero, Justin Richards notes that the copyright for Control belongs to Martin Day and Keith Topping.