Thought of a concept for the whole latex sci fi drone worldbuilding thing, so I’m putting it here:

The basic idea is that the species that created the bioengineered drones did so, because their civilization had had a millennia long conflict within themselves about kidnapping other sapient species from other planets and using them as slave labor.
A lot of their species was actually in agreement that the practice was unethical, and previously attempts had been made to replace the slave labor with robots, but they kept running into problems with the robots being much less able to do jobs that actual people had done. Over the years several species had also had problems with robot uprisings, wide spread glitches etc. as a result of making robots too advanced, so there was a wide spread fear of an entirely mechanical solution.

The idea was then that instead of building robots, they would bioengineer creatures who thrived with the jobs previously done by slaves, while also being fully able to do them. To prevent the new bioengineered creatures from being abused, they were made to be unable to reproduce naturally to the point where they have to be grown into adults in vats, in a way that can’t be reverse engineered from adult drones, this way cutting off backyard breeding and unlicensed populations. This enabled the group making the drones to assess others before giving them access to the drones, and a solid legal recourse across all known galaxies to repossess drones that are being abused.

As unsurprisingly, someone who is happy in their job does better work than someone who resents even being there, this caught on fast and a couple of hundred years later, the drones started also being used by other species under the same agreements. The group that had started out making the drones were now an integral part of their species’ government and the whole thing is heavily regulated.

The initial bioengineered creatures were made to have the same upright bipedal posture as their creatures, to make them able to use the same facilities and furniture as them. They were also given two front facing eyes, arms with good movement for maximal utility, a nose in the middle of the face, mouth underneath and such, and were made to be omnivorous and with very high endurance.

As a complete coincidence this alignment turned out to be somewhat visually similar to humans, who were discovered about 300 years after the creation of the drones. This was considered very funny. Humans asserted themselves well enough to not be confused for mild mannered submissive drones, although occasionally clickers get a little confused about their shape and stature being so close to their own.