The series also features Sidse Babett Knudsen as Theresa Cullen, Westworld's head of quality assurance; Jimmi Simpson as
first - time visitor William; Rodrigo Santoro as Hector Escaton, Westworld's perennial «most wanted» bandit; Shannon Woodward as Elsie Hughes, a rising star in the park's behavior department; Ingrid Bolso Berdal as Armistice, a savage
fighter and brutal bandit; Ben Barnes as Logan, a veteran
guest whose hedonistic romp through the park is motivated both by self - indulgence and a desire to help is friend William; Simon Quarterman as Lee Sizemore, the park's head of narrative whose storylines tantalize
guests; Angela Sarafyan as Clementine Pennyfeather, one of Westworld's most popular attractions; Luke Hemsworth as Stubbs, the no - nonsense head of security; and Clifton Collins Jr. as Lawrence, a charming but lethal outlaw.