In December of 1986, the time traveling alien known as the Doctor (Doctor 1) and his companions arrived at the South Pole Space Tracking Station and ended up confronting the Cybermen for the first time as the Cybermen’s planet (Earth’s lost sister) was draining Earth’s energy. While the Doctor managed to stop the Cybermen’s destruction of Earth and turning it’s population into Cybermen, the strain was too much and the Doctor regenerated for the first time into his second incarnation (Doctor 2) ("The Tenth Planet", Doctor Who, vlm 1, TV) The cybermen’s homeworld of Mondas was destroyed by Earth. ("Attack of the Cybermen", Doctor Who vlm 1, TV)














