Roy Batty Demands More Life

Roy Batty and the other replicants return to Earth because their creators imposed four-year lifespans; Roy demands more life from Tyrell, kills him when refused, yet later chooses to save Deckard before dying.

Replicants are engineered for dangerous labor, given deliberately short lives, and hunted when they seek autonomy, turning artificial personhood into a labor-and-rights regime.

Replicants are bioengineered humans rather than software AI, and the film largely assumes rather than tests their moral patienthood.