Walking statues were mighty constructs built for the defense of holy temples, ancient vaults and the most important cities, castles and fortresses of Waterdeep. They often served as ethereal guardians that could attack other ethereal creatures approaching its guarded area. They were unswervingly loyal to their instructions or orders, carrying them out to the best of their abilities.
Unlike most constructs, walking statues were free-willed, thinking creatures who could reason, learn and remember. They were able to stand still for centuries at a time, remaining endlessly vigilant, but all the while they would be deep in thought. Walking statues were capable of understanding Common and Draconic, but would speak only if they were commanded to do so by their creator or by any whom they recognized as an authority.