The PG-3 is a personal bodyguard automaton — a bipedal platform standing 2.1 meters with a broad, reinforced torso designed to physically interpose itself between its principal and incoming threats. The Aegis is not subtle. It walks beside its owner like a wall of matte-gray armor, scanning crowds with a head-mounted threat assessment array and maintaining a constant calculation of optimal positioning relative to potential attack vectors. When it identifies a threat, it moves — fast — placing its armored body between the threat and the principal.

The PG-3's primary defense is physical. Its torso plating is rated to absorb multiple impacts from standard-caliber firearms, and its arms can deploy integrated ballistic shields that extend the protective coverage to 1.5 meters on either side. It can take hits that would kill a human bodyguard and continue functioning. It does not flinch, hesitate, or take cover — it stands in the line of fire because that is its function. Arcturus marketing describes this with characteristic understatement: 'The PG-3 does not value its own existence.'

The PG-3 also carries a non-lethal deterrent suite: a chest-mounted flashbang projector and a chemical irritant dispersal system for crowd situations. In jurisdictions where armed bodyguards are restricted, the PG-3 operates as a 'personal safety platform' — technically unarmed (non-lethal systems are classified as safety equipment), legally distinct from a weapon, and physically capable of stopping almost anything short of military ordnance. The legal fiction is maintained because the people who buy PG-3 units are the same people who write the regulations.