The Cybermen are a fictional race of cyborgs who are amongst the most persistent enemies of the Doctor in the British science fiction television series, Doctor Who. Cybermen were originally a wholly organic species of humanoids originating on Earth's twin planet Mondas that began to implant more and more artificial parts into their bodies. This led to the race becoming coldly logical and calculating, with emotions usually only shown when naked aggression was called for.
The Cybermen can be seen as a slightly more individualistic forerunner of the Borg from Star Trek. Similarities include converting their victims into Cybermen (although unlike the Borg there is no way to reverse cyber-conversion), and the use of the catch phrase "Resistance is useless/futile" and promises or threats of assimilation, such as "You will become like us." It has not been confirmed if the Cybermen influenced the creation of the Borg in any way, although the first episode that hints at the presence of the Borg ("The Neutral Zone", 1988) features, as a briefly glimpsed background detail, a computer screen which displays the names of the first six actors to play the Doctor; showing that at least some members of the production team were aware of Doctor Who.
Quelle: http://www.reference.com/browse/wiki/Cyberman