Crashbot
From Tardis Wiki, the free Doctor Who reference
The Crashbots were crash test dummies designed by a large humanoid species whose purpose in life was to be destroyed so that their Masters could better understand and learn tips from their their destruction. With their red livery, a big ‘C’ on their chests and pop-off limbs the Crashbots were so well designed that they began to feel a purpose to their lives. The arrival of the Doctor recognising this new enhanced level of feeling gave them a new purpose- that of living, and adoptig the Doctor’s interesting ideas decided to travel the universe seeking out new dangers and disasters. (DWA: Dummy Run)