Simulants

Simulants are humanoid androids designed to look and feel exactly like a human being. Commonly called "Sims" by many, they are outlawed in Central Space. Though they continue to see popularity on distant worlds with looser laws such as Jericho. Though many are illegally manufactured by various crime syndicates. And all are considered slaves.

Further Details
A common misconception is that simulants are robots. In many respects, they are cybernetic organisms well beyond that of typical cyborgs which are typically augmented humans. What makes a simulant different from a human with cyborg enhancements is the biology. Simulant biology, though designed to replicate the look and feel of humans, isn't technically human but a wholly synthetic biology. While many simulants do have a metal endoskeleton (such as combat models) some are purely biological organisms. Pleasure slaves are often the most common example of this.

Simulant brains are also, primarily, biological in nature. Though may have cybernetic additions to allow for data ports for downloading information.

Hacking simulants is virtually impossible due to their biological nature. Their programming is conditioned into their brains as they develop, and altering these programs has proven to be incredibly difficult.