A robot duplicate of Rose Tyler was created by the Breebles in an attempt to assassinate the Doctor in revenge for his having destroyed their replication pods. After she was created and sent to kill the Doctor, the Breebles kept the real Rose prisoner. However, Rose managed to escape them and return to the Doctor, who then figured out which of the two Roses was the real one by interrogating them about their past adventures with him: due to a flawed memory disk, the Robot Rose made ten egregious mistakes in her story. The Doctor thus deactivated her using his sonic screwdriver. (GAME: Robot Rose)