What mechanical figure did Leonardo da Vinci design as a seated armored knight?

Leonardo da Vinci’s seated mechanical armored figure is known as the robot knight.

Leonardo designed the robot knight around 1495 for a pageant in Milan organized under the patronage of Ludovico Sforza. The figure wore armor and was designed to perform humanlike movements, including sitting, standing, moving its arms, and operating its jaw.

The robot was an automaton, meaning that mechanical mechanisms produced its movements without electronic control. Leonardo used cables, pulleys, and a system of gears to translate motion from handles or internal mechanisms into the figure’s limbs.

No original robot knight has survived, and historians reconstruct its operation from Leonardo’s drawings and notes. The design is sometimes presented as a modern robot, but “automaton” is the more historically precise term. Its importance lies in Leonardo’s attempt to model anatomy through mechanical linkages.