Cyberman Remnant

The Cyberman Remnant were a collection of surviving Cybermen follwing the Dalek-Cyberman War. They were left behind after the Doctor pulled the two opposing armies into the void because they were created in our universe, meaning that they were not drawn back towards their own universe like the other Cybermen were.

These Cybermen actually succeeded at things because they opted to not elect a Cyberleader. They lived on Earth and slowly rebuilt the Cyber-race into a fully-fledged Empire. At first, however, they consisted somply of ancient damaged Cybermen on the brink of destruction.

They also made contact with the Cybermen of our universe and the two swapped technology, compared data and ultimately helped each other.