Mariette is a female Nexus-8 Replicant in the Blade Runner 2049 movie. She works as a prostitute, but she is also a member of the Replicant Freedom Movement led by Freysa. She is very attractive and she catches the interest of Officer K. One night Joi, K's hologram lover pays her to spend the night with K while Joi syncronized herself with Mariette's body. Making it appear as if K is making love to Joi. Later in the film she is present when Freysa and the other Replicants of the movement inform K he is not Rachael's child but needs to find Deckard and his daughter, before the Wallace Corporation finds them.
She is portrayed by Mackenzie Davis.