The BLX General labor droid was constructed with a humanoid, two-legged form, incorporating photoreceptors and auditory sensors calibrated for typical frequency ranges.
Despite its sluggish response time and walking speed, the BLX exhibited considerable physical power and exceptional endurance. BLX droids lacked specialized skills but performed effectively in zero-gravity environments, utilizing magnetic footpads to adhere to starship exteriors, while their metallic exoskeletons provided resilience against extreme temperatures and impacts from micrometeoroids. They saw extensive deployment in shipyards like Fondor and Kuat. The initial BLX models, manufactured by Serv-O-Droid, Inc., featured an asymmetrical head and arms that extended below the knees; however, subsequent iterations, such as the BLX NV, possessed more human-like body proportions. It was marginally more sophisticated than a typical ASP-7 labor droid, exceeding that model due to its somewhat enhanced cognitive processing and a more adaptable speech synthesizer.

Although BLX labor droids were unremarkable following routine memory wipes, their behavioral programming matrices were capable of generating a significant degree of self-awareness if permitted to amass experiential data. Numerous BLX droids cultivated distinct personalities. These particular units frequently formed bonds with their masters, thus preventing their disposal in smelting facilities.
Bollux, alternatively designated as BLX-5, achieved the greatest notoriety among the BLX series.