Cyberman

The Cybermen are a fictional race of cyborgs in the British science fiction television program Doctor Who. Originally humanoid, the Cybermen progressively remove their organic parts, replacing them with mechanical and cybernetic components. This process, known as "cyber-conversion," is intended to improve the Cybermen's logical processing and survival capabilities, while simultaneously suppressing emotions and individual identity.

Cybermen are typically depicted as emotionless and relentlessly logical, viewing humanity as inefficient and in need of "upgrading" to become like them. Their motivations generally involve converting or destroying all organic life, ensuring their own survival and dominance. They operate as a hive mind, with individual Cybermen subservient to the collective will.

The Cybermen's appearance has varied considerably throughout the history of Doctor Who, but they are consistently portrayed as metallic humanoids with limited emotional expression. Common features include a helmet obscuring their faces, a chest unit housing life support systems, and a monotone robotic voice. Early versions were clumsier and more obviously mechanical, while later versions are sleeker and more technologically advanced.

The Cybermen originated on Earth's twin planet, Mondas. As Mondas drifted further from the sun, its inhabitants began replacing body parts with machinery to survive the increasingly harsh conditions. This process gradually led to the complete eradication of emotions and the creation of the Cybermen. The destruction of Mondas in "The Tenth Planet" (1966) did not eliminate the Cybermen, as they had established bases and colonies elsewhere in the galaxy. They have since become recurring adversaries of the Doctor, appearing in numerous stories across the show's various incarnations.

Their weaknesses have varied, but often include gold (which clogs their respiratory systems), emotional appeals (which can disrupt their logical processes), and vulnerabilities in their control systems. Despite these weaknesses, the Cybermen remain a persistent and formidable threat, representing the dangers of unchecked technological advancement and the loss of humanity.