Gadget
From Tardis Wiki, the free Doctor Who reference
Gadget was a robot used by the crew of Bowie Base One, operated by Roman Groom who is presumably his creator. Before the Doctor's manipulation, it could travel at approximately two miles per hour. The Doctor later sent it with his TARDIS key out to the TARDIS and had it bring the TARDIS into Bowie Base One.After arriving on earth gadget lost contact with his control signal and shut down,it is unknown what happened to it after this
When receiving or acknowledging commands, it stated "Gadget, Gadget!"