Teselecta

the Teselecta is one of the most remarkable piece of engirneering ever. Its purpose is to travel through time, locate people deemed to have broken the law, and without killing them, 'send them to hell'

But the technology behind these machines is awesome. Also known as Justice Department Vehicles, a Teselecta can adapt itself to resemble anyone whose likeness it has scanned. But more than this, it can transform itself to take on the appearance and functionality of non-living matter, such as clothing or even a motorbike!

The vehicle is staffed by a crew that have been miniaturised and kept in a Borrower-like state by a compression field and the Teselecta the Doctor encountered in Berlin, 1938, was Justice Department Vehicle 6018. Deadly, powerful and almost unstoppable, it was only defeated when Amy forced its ruthless crew to abandon it.