Doctor Who: EVERY Version Of The Cybermen Explained

At some unknown point in time – whether due to parallel evolution or some sort of cross-pollination between Cyber variants – a subtle new breed emerged in the main universe, which lacked the “C” on their chest plates (since they weren’t affiliated with Cybus Industries), but were otherwise identical to John Lumic's creations.

These Cybermen were organised into legions, who monitored whole quadrants of space. One such legion – the twelfth – was destroyed by the Eleventh Doctor, to pressure the Cybermen into telling him the location of Demons Run.

He later discovered a group of Legion Cybermen underneath a department store in Colchester, who were visibly damaged due to their ship crashing there years previously (with handlebars and chest plates missing, extra panels bolted on and circuitry exposed).

The Legion Cybermen then fought in the Cyber-Wars, supported by Cyberdrones – flying Cyber heads that could fire energy bolts from their eyes.

For all intents and purposes, Legion Cybermen are identical to John Lumic's Cybusmen.