CyberNeomorph

The CyberNeomorphs were a variant of Cybermen which originated when a group of CyberNomads discovered a tomb of CyberTelosians.

26th century
In 2526 several planets would unite in war against the Cybermen in an event called the Cyber-Wars. A force of CyberNeomorphs tried to devastate Earth using a Cyber-bomb and convert the survivors. Failing this, they hoped to crash the freighter into Earth and cause an ecological disaster. Although the attempt failed, the freighter was catapulted back in time to become the "meteor" that wiped out the dinosaurs. (TV: Earthshock)

Incursion into the past
On Telos, the CyberNeomorphs plotted to change history and, as already noted, divert Halley's Comet to Earth in order to destroy it and to save Mondas. They were defeated by the Sixth Doctor. (TV: Attack of the Cybermen)

Isolated
A fleet of CyberNeomorphs time-travelled to 1988 and attempted to invade Earth, but the Seventh Doctor used the Nemesis to trick them and destroy the Cyber-Fleet. (TV: Silver Nemesis)

Rassilon Era
During the Dark Times on Gallifrey, the Cybermen were excluded from the games in the Death Zone, because the Time Lords believed they had an unfair advantage over other victims of the games. Borusa, having found the Game of Rassilon, transported a squadron of Neomorph Cybermen to the Death Zone to threaten and harass the Third Doctor and Sarah Jane Smith. These Cybermen were destroyed by a similarly transported Raston Warrior Robot. A second squadron allied with, intending to stage an invasion of Gallifrey, but he betrayed and destroyed them. A third squadron attempted to destroy the Fifth Doctor's TARDIS, but were foiled when the TARDIS dematerialised at the last second. (TV: The Five Doctors)

During the Doctor's era, the Neomorph Cybermen allied themselves with to become the rulers of Gallifrey. After they kidnapped Susan Foreman, they were stopped by the Fifth Doctor. (PROSE: Birth of a Renegade)

Undated Events

 * Destiny-cybermen.png Cyberfaction that looked like CyberNeomorphs but sounded like CyberMondasians were once used by the Master to try and kill the Graak and the first seven Doctors. The were shown to either be coming out of or going into hybernation. ([[GAME]]: Destiny of the Doctors)