A replicant is a fictional bioengineered or biorobotic android in the 1982 film Blade Runner and its upcoming sequel Blade Runner 2049.
The Nexus series of replicants are virtually identical to an adult human, but have superior strength, agility, and variable intelligence depending on the model. Because of their similarity to humans, a replicant can only be detected by means of the fictional Voight-Kampff test, in which emotional responses are provoked; replicants' responses differ from humans' responses. Nexus 6 replicants also have a safety mechanism, namely a four-year lifespan, to prevent them from developing empathic cognition and therefore immunity to a Voight-Kampff machine. A derogatory term for a replicant is skin-job.
Roy Batty, model number N6MAA10816, is the leader of the renegade Nexus-6 replicants and the main antagonist of Blade Runner. He is very intelligent, fast, and skilled at combat, and yet still learning how to deal with developing emotions. He blew a few of his fellow replicants on what is inevitably a fruitless search for more life.
Priscilla Pris Stratton is the basic pleasure model (incepted on Valentine's Day), created for entertainment and thus even more of a slave-object than the others. However, she shows that she can be quite adept at manipulation of the human male as she uses her wiles to make friends with J.F. Sebastian/John R. Isidore, a man who until then, literally made his friends.