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

BB Unit Astromech Droid has had additional memory installed that increases its computing power. This allows it to perform complex analytical operations at a marginally faster rate, but limits the ability to further customize the BB Unit Astromech Droid in any other way.

BB Unit Astromech Droid has developed a personality around the concept of a caretaker. It has assumed the needs of its owner to be its prime directive, even such tasks that have not been requested of it. This results in BB Unit Astromech Droid often flitting about in an attempt to meet any possible task before it is necessary, including menial tasks.