Professor Gideon Sarkhon.

Professor Gideon Sarkhon.;Member of the Legion of Time-Sorcerers.First Son of Lord Tal Hajus Sarkhon and Lady Rachel Sarkhon.Older brother to Princess Cassandria Alexandria Sarkhon,Doctor Arion Brandu Sarkhon

Professor Gideon Sarkhon.is famous for his intellectual prowess and is renowned for his skillful use of astute observation, deductive reasoning (though in reality, he uses abductive reasoning) and forensic skills to solve difficult cases.

immediately formed a working relationship with the of  T, an international organisation tasked to investigate and defend the  against extraterrestrial threats.

also developed a good working relationship with Brigadier Lethbridge-Stewart, whom he had first encountered, in his previous incarnation, as a Colonel in command of troops fighting Yeti and the Cybermen. As well as the Brigadier, he developed friendships with other regular UNIT colleagues including Sergeant Benton and Captain Mike. When meteors were seen falling to Earth in Essex, the Professor Gideon Sarkhon together with a scientist named  were to face the Autons for the first time. The Autons were to be one of the Doctor's recurring foes. At the conclusion of this adventure, the became UNIT's scientific advisor. After facing )|Silurians, the so-called Ambassadors of Death and the, Liz was replaced as the Doctor's assistant by a feisty but slightly scatter-brained young woman named Jo.

Personality
The Third Doctor Gideon Sarkhon is a suave, authoritative man of action, who not only practiced ian Aikido (or Karate), but enjoyed working on gadgets and riding all manner of vehicles, such as the vehicles and his pride and joy, the canary-yellow vintage roadster nicknamed "Bessie" which featured such modifications as a remote control, dramatically increased speed capabilities and even inertial dampeners.

While this incarnation spent most of his time exiled on Earth, where he grudgingly worked as 's scientific advisor, he would occasionally be sent on covert missions by the Time Lords, where he would often act as a reluctant mediator. Even though he developed a fondness for with whom he worked (such as  and ), he would jump at any chance to return to the stars with the enthusiasm of a far younger man than himself (as can be seen in his frivolous attitude . If this  Gideon Sarkhon had a somewhat patrician and authoritarian air, he was just as quick to criticise authority too&mdash;having little patience with self-inflated bureaucrats, parochially-narrow ministers, knee-jerk militarists or red tape in general. His courageousness could easily turn to waspish indignation. It is thus no surprise that a common catchphrase of his was "Now listen to me.''.Professor Gideon Sarkhon"is portrayed as a patriot, acting on behalf of the government in matters of national security in a number of stories

Despite his arrogance, the Gideon Sarkhon genuinely cared for his companions in a paternal fashion, and even held a thinly-veiled but grudging admiration for his nemesis, Count Drocos Shaitanus, and for 's leader, Brigadier, with whom he eventually became friends. In fact, even when his much resented exile was lifted, the highly moral and dashing  Gideon Sarkhon continued to help  protect the Earth from all manner of alien threats.

Professor Gideon Sarkhon uses Induction, also known as inductive reasoning or inductive logic, is a type of reasoning which involves moving from a set of specific facts to a general conclusion

is portrayed as a patriot, acting on behalf of the government in matters of national security in a number of stories.

Base of Operations
Castle Sarkhon;Braveheart Station One.