Robot Queen

The Robot Queen was a machinery built by toymaker Hiram Flaversham as part of Professor Ratigan's nefarious scheme to become ruler of Mousedom in The Great Mouse Detective.

Physical appearance
It had the same appearance as Queen Mousetoria herself on the evening of her Diamond Jubilee.

History
After Fidget kidnaps Hiram Flaversham and takes him to Ratigan, who orders Flaversham to build the robot for Ratigan's sinister plan. Ratigan blackmails Flaversham to finish the robot by the Queen's Diamond Jubilee, which he does. Once the robot is finished, it is wrapped in a large package to be carried off to Buckingham Palace.

After arriving at the palace, the thugs deliver the package to   Queen Mousetoria, but when   it is opened, the Queen is dumbfounded to find her robot replica, which suddenly comes to life and chases her around. The Queen orders the arrest of Ratigan, but Ratigan speaks into a speaker that makes the Robot Queen speak, ordering the capture of the real Queen.

During the Jubilee, the Robot Queen appears in front of the gathered citizens  (who do not know it is a robot), with Flaversham behind the curtains controlling and speaking into the speaker. The Robot Queen presents her "Royal Consort", Ratigan. However, Basil, Dawson, and Flaversham's daughter Olivia arrive at the palace and save the real Queen. Finding the thugs threatening Flaversham, the three subdue the thugs. Basil then takes over the controls of the robot and denounces Ratigan, who fights off the robot that falls apart.