It only has its eyes to rely on, which means that the moment the door clicks open, SecUnit whips towards the door. Emergency alerts and a sudden flood of chemicals into its organic parts make it jerk around to face the door, the weapon on its free arm half-powered and raised before its facial recognition kicks in with tags - Levi, human, client - and it forcibly jerks its arm back down.

The first attempt it makes at speaking results in nothing more than a wasplike hum of static, and it has to stop and reset everything before it can try again.

"What the fuck." The words still barely come out audible, with the feedback of buzzing in its voice, made all the worse by the grey platelike chitin framing its mouth and the twitching mandibles folded against its jaw.