Clamavus

The Clamavus is the voice of the cult made manifest, a devoted hybrid who carries a proclamator hailer, a bulky vox-array that broadcasts the coded cant and subsonic commands of the Genestealer Cults across the battlefield. Through it the whispered will of the Patriarch reaches every acolyte and neophyte in range, tightening their coordination and firing their zeal into fanatical purpose.

That same device is a weapon of disruption, flooding enemy frequencies with shrieking static and false signals so that the foe's own commanders struggle to be heard above the din. The Clamavus also masters the cult's clandestine networks, easing the ambushers of the brood into position and calling reinforcements up from the tunnels at the perfect moment. Rarely a frontline killer, the Clamavus is instead the conductor of the uprising's chaos, ensuring the cult strikes as one seamless body while its enemies flounder in confusion. Silence it, and the revolt loses its unifying voice.