An Inquisitor of the Emperial Inquisition is occasionally accompanied by familiars attuned to his or her telepathic signature. These strange constructs not only boost their alertness to danger but also act as psychic conduits; an Inquisitor accompanied by a Familiar finds his psychic abilities amplified. The most common of these bizarre constucts is the Servo-Skull. These are built from the craniums of imperial servants, and are given motive force by small anti-grav motors. Inquisitors have also been known to use genetically and cybernetically enhanced familiars that are symbols of purity or vigilance, such as the eagle. These psychic-symbiotes are mentally linked to the Inquisitor, and he can command them, see and hear with their senses and even attack with them should the situation become desperate.