The MX-1 is a large quadruped platform with three independently articulating sensor/weapon heads mounted on flexible neck stalks. Each head contains a thermal camera, a 5.56mm automatic weapon, and an independent target acquisition system. The three heads can engage three separate targets simultaneously, track threats in a 360-degree arc, and provide overlapping fields of fire that eliminate blind spots.

The Cerberus is designed as a facility patrol unit — a single MX-1 replaces three conventional sentry drones. It patrols a designated route, scanning continuously with three independent sensor arrays, and engages any threat from any direction without needing to turn. The psychological impact of facing a three-headed mechanical dog is considerable — targets report difficulty deciding which head to address, which weapon to avoid, and which direction constitutes 'away.'

The three heads occasionally exhibit coordinated behavioral patterns that weren't explicitly programmed — one head watches a threat while another tracks potential flanking routes while the third scans the ceiling. Arcturus attributes this to the collaborative threat-assessment algorithm. The effect is a machine that appears to think in three directions at once, which it essentially does.