Tleilaxu Master
Tleilaxu Masters are the ruling caste of the Bene Tleilax, immune to the Voice and served by the gholas and Face Dancers their people make.
Every ghola and every Face Dancer the Tleilaxu send out into the universe belongs to a Master, as servant and as instrument. A Master is conditioned against the Bene Gesserit Voice, and holds his own constructs with a command language nobody else uses: a keening, whining, monotonous hum, like the noise of angry insects. Masters tend to be short and childlike in build beside the powindah they deal with. Ten of them, the Masheikhs, sit on the Ruling Council, and those ten have sharp teeth and a metallic grey cast to the skin that turns Ixian probes and other scanners away from what they carry.
How far into Dune have you read?
Set your place and this page rewrites itself to exactly that point. Nothing ahead of you will show.