The Metaleks are a class of sentient terraforming technology from a location elsewhere in the universe, known vaguely as "Galaxy X".
They were sent to Earth by their civilization to 'xenoform' it, making it more amenable to alien forms of life. However, they are persistently stopped by Earth's heroes, especially in the British Isles, which they usually attack for some reason.
The Metalek's originator habitat was on a world destroyed by the Multitude.
Level of Technology:
The Metaleks inhabit large mechanical bodies which seem to conform to the design of construction equipment
- The Metaleks were based on the Daleks, perennial foes of The Doctor, though apparently with further inspiration taken from the British children's show "Bob the Builder", which was about sentient construction equipment interacting with a few humans.