Robot Knight

The Robot Knight was a robot created by the Sontaran, Jingo Linx. It was made from a knight's armour and given to Irongron as a gift. It was activated by voice control.

Irongron used the robot to attack an enemy archer that had tried to infriltrate his castle. However, The Doctor used a bow and arrow to shoot the control box. This caused the robot to go on a rampage.

Later, The Doctor masqueraded as a robot knight in order to gain access to the castle. Irongron requested the robot knight to fight him, so The Doctor was forced to take part in a sword battle with Irongron. The Doctor won, but Irongron discovered it was him. (DW: The Time Warrior)