The Master
The true relationship between the Master and the Doctor has never been clear, although they apparently went to the Academy on Gallifrey together, and were rivals before the Master's first televised appearence in The Terror of the Autons. The Master has freqently tried to kill the Doctor but always seems to allow some way for the Doctor to escape, although whether he is concious of this is uncertain. It has been suggested by some that they may be brothers, but this is not supported by anything in the series.
Cybermen
The Cybermen are another of the more popular villans from the series. They are a race of humans who evolved on Mondas, a planet virtualy identical to Earth, which broke free of our solar system millenia ago. The people of Mondas gradually replaced their organs with cybernetic parts, gaining the strength of machines, but losing their humanity in the process. They are driven by logic, and the need to reproduce by converting other humanoids into cybermen. Unfortunately, while the Cybermen were originally completely emotionless, they displayed more emotions in later seasons. The cybermen first appeared in The Tenth Planet, the first Doctor 's last story, which no longer exists in its complete form in the BBC archives. The cybermen have undergone many changes in their appearence, the image on the left is from the once-lost story Tomb of the Cybermen, originally broadcast in 1967, the image on the right is from their last appearence in the series, Silver Nemesis, the 25th anniversary story, broadcast in 1988.
The Daleks
The Daleks originate on Skaro, a planet devistated by a war which raged for a thousand years, poisoning the planet, and mutating its inhabitants. In the original history, the war was fought between the Dals and the Thals. Radiation caused both races to mutate and become disfigured -- the Dals retreating into metal shells and becoming Daleks, while the Thals came full circle, eventually becoming a race of physically perfect individuals. This history was later re-written by Terry Nation (the person who takes credit for inventing the Daleks) in his 1975 story Genesis of the Daleks. In this new history, it is the Kaleds, not the Dals, who become Daleks, after a thousand years of war with the Thals. A physically and mentally twisted scientist called Davros, after genetic experiments on his own people, created the Kaled mutants which he then placed in war machines. The result was the Daleks, creatures driven by hate and the desire to exterminate all who oppose them.
