More human than human
Tyrell Corporation built its reputation around advanced genetic design and the Nexus line of bioengineered humanoids. By the Nexus-6 era, replicants had become a foundational labor technology for hazardous off-world exploration and colonization.
A technology constrained by Earth
After a violent mutiny by Nexus-6 replicants in an off-world colony, replicants were declared illegal on Earth. Their existence became inseparable from the distinction between terrestrial society and the expanding off-world economy.