Douloses are large, powerful, invisible monsters which serve the first human they see. The Doulos has dark-grey skin, black eyes, double-jointed legs, muscular arms with three fingers each, and two large horns on its head. Height: 10-15 feet Weight: 800-1000 pounds Special Abilities: Invisibility Extremely strong Special Abilities Each Doulos is invisible, except to its master. They are also very strong and dangerous, and can speak English in deep, gruff voices.