K-Drone (ケイドローン) is an enemy that appears in Mega Man 11. Hence its name, it's a drone that was designed for surveillance purposes, meant to be able to patrol virtually at any location. The K-Drone is still in development, though; the ones seen in the game simply fly across the screen in a sine wave pattern as they look out for intruders. These enemies appear in Fuse Man's stage and in Gear Fortress stages 1 and 4.
A cutting-edge surveillance drone that can patrol any kind of facility. However, it's fresh from the factory and hasn't really been evaluated. How useful it actually is remains to be seen!