The aboleth from D&D 4th Edition done up for Burning Wheel Gold.
Otherworldly horrors hailing from distant and mad realms, Loathed Ones are abominations utterly foreign to Creation. Most sane creatures fear and hate Loathed Ones; even orcs slay Loathed Ones when found. Unfortunately, most Loathed Ones are not detected until far too late. They can break the mind of a lesser creature, making the victim a slave to their incomprehensible will. In this way, whole cities have fallen to these beasts as mind after mind is ruined and the inhabitants turn upon one another in a frenzy of bloodletting and murder.
Mortal Wound B13
Physical Tolerances Su B5, Li B7, Mi B9, Se B11, Tr B12, Mo B13
Intimidation B5, Sorcery B4, Savage Attack B4, Forgotten Places-wise B3, Unfathomable Understanding of All Things-wise B3, Non-Euclidean Geometry-wise B3
Alien, Naked Muscle, Slug Form, Slippery Slime, Radula, Decomposer, Hermaphrodite, Tentacles, Extra Tentacles, Hideous!, Otherworldly Speech, Night Eyed, Massive, Reeking Flesh, Domination
Loathed Ones can speak audibly, but only their kin understand the seemingly meaningless sounds. However, they can make themselves understood by speaking into the thoughts of any creature they can see.
The most terrible power of the Loathed Ones is their ability to break the will of lesser creatures. This trait function as the Force of Will sorcerous spell except test the Loathed One’s Will against the victim’s Will+Ob 3.