What automaton did Leonardo da Vinci design in the form of a seated armored figure?

Leonardo da Vinci designed a robotic knight in the form of a seated armored figure.

The machine was created for a courtly spectacle associated with the Milanese court around 1495. Leonardo’s drawings indicate that the figure could perform human-like movements, including actions involving its arms, through a system of cables, pulleys, and gears. The machine’s armor made it resemble a medieval knight rather than a simple exposed mechanism.

The design is commonly called Leonardo’s robotic knight or Leonardo’s robot. It is an automaton, meaning a self-operating mechanical figure, not a modern electronic robot. There is also a separate Leonardo-related mechanical-lion tradition, so the two inventions should not be treated as the same machine.

Leonardo’s original device has not survived. Modern reconstructions based on his drawings have demonstrated that the mechanism could plausibly produce the described movements. The design is important because it shows Leonardo applying anatomical observation to mechanical engineering and entertainment.