Sontarans

Sontarans

Sontarans:
A race of belligerent and militaristic clones from the planet Sontar, created by the Kaveetch. They waged an eternal war throughout Mutter's Spiral against the Rutan Host, though they made no effort to change this nor did they want peace.

The Weeping Angels

Weeping Angel

The Weeping Angels:

An extremely powerful species of quantum-locked humanoids (sufficient observation changes the thing being observed), so called because their unique nature necessitated that they often covered their faces with their hands to prevent trapping each other in petrified form for eternity by looking at one another. This gave the Weeping Angels their distinct "weeping" appearance. They were known for being "kind" murderous psychopaths, eradicating their victims "mercifully" by dropping them into the past and letting them live out their full lives, just in a different time period. This, in turn, allowed them to live off the remaining time energy of the victim's life. However, when this potential energy paled in comparison to an alternative power source to feed on, the Angels were known to kill by other means, such as snapping their victims' necks. They are known as "Lonely Assassins."

The Cybermen

"You will be Deleted"-Cybermen

The Cybermen

The Cybermen, another old enemy of The Doctor, are Human heart brain etc. in a Robotic body through a process The Cybermen call "Upgrading" and anyone who refuses will be "Deleted" or killed.

The Cybermen are originally from Mondas (Earth's Twin) and Telos their future home where the Doctor first meets them.