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. Pris is also the girlfriend of fellow replicant, Roy Batty.
At a Physical Level, she is shown to have superhuman endurance (as in the scene where she grabs a boiling egg with her bare hand without harm). Her B Mental Level puts her at a lower intellectual level than Roy. She sets a trap for Deckard in the Bradbury Building, where she disguises herself as a mannequin and uses her gymnastic skills to ambush Deckard; however, she is retired by Deckard.
Pris Stratton has disguised herself as one of the myriad of large toy dolls that J.F. has populated his home with. She attacks Deckard very viciously, using a fighting style combining both martial arts and acrobatics. Though she initially disarms him, Deckard recovers his sidearm and shoots her twice; the 1st shot stops a subsequent attack, whereupon she twitches spasmodically on the floor for several seconds; the 2nd shot finally kills her. Roy Batty arrives a few moments later and, finding Pris "retired", kisses her on the lips, showing great sadness at the loss of his friend. He then begins his taunting final battle with Deckard.
I think, Sebastian, therefore I am.