Drudges were servants in Great Houses of the Time Lords on Gallifrey. They appeared to be carved of wood, coated with varnish and had finely carved faces with two tiny polished spheres for eyes. They were androgynous but humanoid in appearance and stood two and a half metres tall.
Drudges were strong enough to lift and carry a fully mature Time Lord in one arm. They had limited flexibility, however. If one was turned over onto its back it would be unable to right itself, much like a turtle.
Drudges could not speak but could make some noises (a creak of outrage, a dry growl of anger like splintering timber), and could also communicate with the house and its furniture in non-verbal ways. (PROSE: Lungbarrow)