HK-model Gladiator Droid has had every external component painted black as night, with attempts to minimize the brightness of external lights and features. This allows this HK-model Gladiator Droid to more easily blend into the shadows and darkness unseen.

HK-model Gladiator Droid has received advanced automated repair programming based on the original HK-model Gladiator Droid schematics, giving it an ability to perform or assist in the performance of self-diagnosis and self-repair of its mechanical systems. This system engages automatically upon damage, and can render the droid temporarily unavaialble while it assesses any necessary repairs before further action can be taken.