A humanoid automaton designed by Leonardo da Vinci around the year 1495.

The design notes for the robot appear in Leonardo's sketchbooks that were rediscovered in the 1950's.

Since the discovery of the sketchbook, the robot has been built based on Leonardo's design; this proved it was fully functional, as Leonardo had planned.

The robot is a warrior, clad in German-Italian medieval armor, which is apparently able to make several human-like motions.

These motions include sitting up, moving its arms, neck, and an anatomically correct jaw. It is partly the result of Leonardo's anatomical research in the "Canon of Proportions" as described in the Vitruvian Man.