Sentry Drone is an enemy from Battletoads.
Details[]
The Sentry Drone is a floating security drone with guns around it. First appearing in the Intruder Excluder level, they float left and right, stopping to shoot spark bolts to the sides, changing their color to indicate they're about to fire. They're easily dispatched with a single Smash Hit.
Gallery[]
Battletoads (NES)
Battletoads (Mega Drive)